TestOut ITF+ Exam Practice Questions
Which operating system function has a steeper learning curve and can potentially break the system without careful use of its operations? Choices: - Service management - Command line interface (CLI) - Application management - Graphical user interface (GUI)
Correct Answer: Command line interface (CLI) Explanation: - The command line has a steeper learning curve, and it's possible to accidentally break the system if you don't know what you're doing. However, it gives the user greater control over the operating system and is faster than using a GUI. - Generally speaking, GUIs are better for consumers. They're easier to learn and have safeguards against accidentally ruining the system by deleting or modifying important files. - An operating system (OS) manages applications installed on a system. The OS has tools to view, configure, and delete applications. - The Operating System also runs services, which are processes that run automatically in the background. Services do things like indexing files for better searches, verifying that software is up to date, and backing up files.
Which of the following store's data using microscopic light and dark spots? Choices: - Flash drive - Hard disk - Compact disc - RAM
Correct Answer: Compact disc Explanation: - The computer uses a laser to read the microscopic light and dark spots on CDs, which are then digitized into 1s and 0s.
Jeff has been asked to replace a monitor on a workstation. Which of the following device interfaces could he use to connect the new monitor? Choices: - SSID - USB - DVI - UPS
Correct Answer: DVI Explanation: - Digital Visual Interface (DVI) connectors are designed to connect digital monitors to a computer. - Universal Serial Bus (USB) is a common interface used to connect peripherals, such as mice, keyboards, printers, and digital cameras to a computer. - An Uninterruptible Power Supply (UPS) is a large battery that's connected both to the computer and the wall outlet. As long as power is coming in from the wall, the computer uses that power directly. However, if the power from the wall shuts off, the computer immediately jumps to battery power. - A Service Set Identifier (SSID) is the primary name associated with a WiFi network.
Given the numerical value 1010101.71, which of the following number systems is MOST likely represented? Choices: - Octal - Binary - Hexadecimal - Decimal
Correct Answer: Decimal Explanation: - 1010101.71 represents a decimal number with two decimal places. In fact, the word "decimal" in decimal point refers to the decimal number system. - The binary number system uses two digits - 1 and 0. In practice, binary numbers do not use decimal points. - The hexadecimal number system uses sixteen digits - the numerals 0 through 9 and the letters A through F. - Octal is a base-8 number system and uses the digits 0 through 7.
Abby wants a high-end computer system for her home office that can be upgraded. Which of the following should she choose? Choices: - Gaming Console - Server - Laptop - Desktop
Correct Answer: Desktop Explanation: - Desktop systems have many advantages over other types of computing devices. They are modular in nature, meaning you can combine different pieces together to customize the system to do exactly what you want it to do. This makes them easier to repair and upgrade. - Laptops typically have less computing power than comparable desktops and are more difficult to upgrade and repair. - A gaming console would not be an appropriate choice for a home office computing environment. - A server provides network services to clients on a network and would typically not be needed in a home office.
Which of the following devices would be easiest to repair? Choices: - Desktop computer - Gaming console - Laptop - Smartphone
Correct Answer: Desktop computer Explanation: - A desktop computer is the easiest device to repair. Desktops are generally designed to be easier to open, and so they are easier to repair or upgrade when needed. - Smartphones, gaming consoles, and laptops can very difficult to repair as they are not designed to be easily opened.
Which of the following devices would be the BEST option for a gamer? Choices: - Desktop computer - Smartphone - Server - Laptop
Correct Answer: Desktop computer Explanation: - For a gamer, a desktop system is probably the best choice because it can be customized to meet the computing demands of visually intensive video games. - While smartphones do have games, a gamer probably wants something more powerful. - Servers are not designed for gaming. - A laptop is generally not designed for gaming.
Tina has accepted a position as a graphic designer. She wants a powerful device that she can connect multiple large screens to. Which device would be the BEST option for her? Choices: - Laptop - Server - Smartphone - Desktop computer
Correct Answer: Desktop computer Explanation: - For a programmer or graphic designer, a desktop system is typically the best choice because it has more computing power and can be connected to larger monitors. - A smartphone does not provide the computing power needed. Large external monitors cannot be connected to a smartphone. - Servers are not designed for graphic design or to connect multiple monitors. - A laptop does not have the necessary computing power required nor does it allow multiple large screens to be attached.
As a member of the help desk administration team, you've been assigned to update the driver for the network adapter that is installed on most of the machines in your department. You have a copy of the latest driver on a USB flash drive. Which Windows utility will allow you to manually update this new driver? Choices: - Device Manager - Network and Sharing Center - Internet Properties - Driver Manager
Correct Answer: Device Manager Explanation: - Device Manager allows you to view installed devices and their status, update drivers, and disable or uninstall devices. - From Network and Sharing Center you can view the status of your network and Internet connections, change or set up new connections, or troubleshoot network problems. From Internet Properties you can configure general settings associated with your computer's connection to the Internet. You can configure settings related to security, privacy, content, and several other types of settings. Driver Manager is not a Windows utility.
Which kind of system software tells the computer how to communicate with peripherals, such as a printer or scanner? Choices: - Firmware - Operating System - Utility software - Device drivers
Correct Answer: Device drivers Explanation: - Device drivers help computers to communicate with hardware peripherals from different manufacturers.
Marcus was assigned to troubleshoot a problem with a customer not being able to access a cloud application. Which of the following is the LAST step in the troubleshooting methodology that should be completed? Choices: - Document findings/lessons learned, actions, and outcomes - Implement the solution or escalate as necessary - Establish a plan of action to solve the problem and identify potential effects - Verify full system functionality and, if applicable, implement preventive measures
Correct Answer: Document findings/lessons learned, actions, and outcomes Explanation: - The last step in the troubleshooting methodology is to document findings/lessons learned, actions, and outcomes. - Here is the troubleshooting methodology in order: 1. Identify the problem 2. Research knowledge base/Internet, if applicable 3. Establish a theory of probable cause 4. Test the theory to determine the cause 5. Establish a plan of action to solve the problem and identify potential effects 6. Implement the solution or escalate as necessary 7. Verify full system functionality and, if applicable, implement preventive measures 8. Document findings/lessons learned, actions, and outcomes
You have just connected a new USB device to your Windows system. You used the installation disc that came with the device to install the drivers needed to support the device. After the installation, the system frequently crashes when you try to access the new device. Which of the following steps would MOST likely resolve this issue? Choices: - Replace the device itself. - Download and install the latest driver from the manufacturer's website. - Remove and then reinstall the device. - Run the Add Legacy Hardware wizard and manually configure the device.
Correct Answer: Download and install the latest driver from the manufacturer's website. Explanation: - The first thing to try would be to download and install the latest driver for the device from the manufacturer's website. - You would use the Add Hardware wizard to configure Legacy (non plug-and-play) devices. Reinstalling or replacing the device should only be done after performing other troubleshooting tasks.
The troubleshooting methodology starts by identifying the problem. The first step in identifying the problem is to gather information. Which of the following is the NEXT step? Choices: - Establish a plan of action - Identify symptoms - Duplicate the problem, if possible - Establish a theory of probable causes
Correct Answer: Duplicate the problem, if possible Explanation: - Here are the steps for identifying the problem: - Gather information - Duplicate the problem, if possible - Question users - Identify symptoms - Determine if anything has changed - Approach multiple problems individually
Which of the following describes the firmware in gaming consoles, TVs, and smart cars? Choices: - Access control - Device management - Graphical User Interface - Embedded OS
Correct Answer: Embedded OS Explanation: - Many devices, such as gaming consoles, televisions, and smart cars, have embedded operating systems called firmware. - A graphical user interface, device management, and access control are not firmware.
While troubleshooting a problem with a computer, a technician has tested and confirmed a theory on how to fix the problem. Which of the following is the NEXT step the technician should perform? Choices: - Establish a plan of action to solve the problem and identify potential effects - Implement the solution or escalate as necessary - Document findings/lessons learned, actions, and outcomes - Verify full system functionality and, if applicable, implement preventive measures
Correct Answer: Establish a plan of action to solve the problem and identify potential effects Explanation: - The next step in the troubleshooting methodology is to establish a plan of action to solve the problem and identify potential effects. - Here is the troubleshooting methodology in order: 1. Identify the problem 2. Research knowledge base/Internet, if applicable 3. Establish a theory of probable cause 4. Test the theory to determine the cause 5. Establish a plan of action to solve the problem and identify potential effects 6. Implement the solution or escalate as necessary 7. Verify full system functionality and, if applicable, implement preventive measures 8. Document findings/lessons learned, actions, and outcomes
Anna, a technician, is helping a customer troubleshoot an issue where a server will intermittently become inaccessible to employees. Anna has completed researching the knowledge bases available. What should Anna do NEXT as part of standard troubleshooting methodology? Choices: - Establish a plan of action to solve the problem - Test the theory to determine the cause - Identify the problem - Establish a theory of probable cause
Correct Answer: Establish a theory of probable cause Explanation: - The next step in the troubleshooting methodology is to establish a theory of probable cause. - Here is the troubleshooting methodology in order: 1. Identify the problem 2. Research knowledge base/Internet, if applicable 3. Establish a theory of probable cause 4. Test the theory to determine the cause 5. Establish a plan of action to solve the problem and identify potential effects 6. Implement the solution or escalate as necessary 7. Verify full system functionality and, if applicable, implement preventive measures 8. Document findings/lessons learned, actions, and outcomes
Which single digit has the highest value in the hexadecimal number system? Choices: - 0 - G - H - 9 - F
Correct Answer: F Explanation: - The hexadecimal number system uses sixteen digits - the numerals 0 through 9 followed by the letters A through F.
Which kind of system software is preinstalled on electronic products like blenders, automobiles, and televisions? Choices: - Operating System - Firmware - Device Drivers - Utility Software
Correct Answer: Firmware Explanation: - Firmware functions as a rudimentary operating system for electronic devices that wouldn't normally be considered "computers."
Which of the following uses persistent memory chips to store data? Choices: - Hard disk - Flash drive - Compact disc - RAM
Correct Answer: Flash drive Explanation: - Flash drives use persistent memory chips to store data. - RAM uses memory chips, but they are not persistent. - Compact discs and hard disks are persistent, but they do not use memory chips.
If a folder exists on an NTFS partition, which permission is needed by a user who needs to set security permissions on the folder? Choices: - Write - Execute - Read - Full Control
Correct Answer: Full Control Explanation: - A user must have the Full Control permission to set NTFS security permissions. - Write permissions allow a user to change folder or file data and attributes. Modify permissions includes all Read, Execute, and Write actions and adds the ability to add or delete files. Read permissions allow a user to view folder details and attributes.
Which of the following should be done before working on hardware in a computer system? Choices: - Ensure the system is plugged in - Ground yourself using an ESD wrist strap - Rub your feet on the carpet - Touch a plastic part of the case
Correct Answer: Ground yourself using an ESD wrist strap Explanation: - Before working on hardware in a computer system, you should ground yourself so that a static charge doesn't build up. You can wear a special wrist strap that has a metal plate. - Rubbing your feet on carpet will build up a static charge. This will shock any component you touch. - You should never begin working on hardware in a computer system while it's plugged in. Always unplug a computer before beginning your work. - Before working on hardware in a computer system, you can discharge yourself by touching a metal part of the computer case. Touching a plastic part does not discharge any built-up static charge.
Which of the following would be the MOST LIKELY cause for a computer to perform sluggishly? Choices: - Hard drive - RAM - CPU - Power supply
Correct Answer: Hard Drive Explanation: - Issues with the hard drive would be the most likely cause for a computer to run sluggishly. - CPU issues can cause a computer to run slower, but this would generally result in crashes or other system issues - RAM issues can cause a variety of problems from crashes and stalls all the way to making your computer unable to boot - The power supply would not cause the computer to perform sluggishly.
You need a storage device that has very large storage capacity, is fast, and is relatively inexpensive. Which storage device will best suit your needs? Choices: - Optical - SSD - Hard disk - USB flash drive
Correct Answer: Hard disk Explanation: - A hard disk has a large memory capacity, is fast, and is relatively inexpensive. Optical disks are also inexpensive but are not as fast and do not provide the storage capacity of hard disks. USB flash drives are not as inexpensive as hard disks with equal storage capacity and are not available with the capacity as the larger hard disks. Solid State Drives (SSD) have a large memory capacity and are fast but are much more expensive than comparable hard drives.
Which of the following has the ability to store user data even if the power to the computer is off? Choices: - Cache memory - Hard drive - Firmware/BIOS - System memory
Correct Answer: Hard drive Explanation: - Hard drives provide persistent storage for user data. - System memory and cache memory require a power source to store data. - Firmware/BIOS provide persistent storage while the computer is powered off, but for system settings and not user data.
An example of a MAC address is 00-B0-D0-63-C2-26. Which of the following notational systems is MOST likely used to represent a MAC address? Choices: - Decimal - Binary - Octal - Hexadecimal
Correct Answer: Hexadecimal Explanation: - The hexadecimal number system uses sixteen digits - the numerals 0 through 9 and the letters A through F. MAC addresses are typically composed of six groups of two hexadecimal digits separated by hyphens or colons. - The binary number system works the exact same way as the decimal number system but uses only two digits - 1 and 0. - The decimal number system uses ten digits from 0 to 9. - The octal number system uses eight digits from 0 to 7.
Which of the following makes videos appear smoother and more fluid? Choices: - Lower resolution - Higher resolution - Higher frame rate - Lower frame rate
Correct Answer: Higher frame rate Explanation: - The frame rate is the measure of how many images, or frames, are shown each second. A higher frame rate makes videos appear smoother and more fluid than a lower frame rate. - Resolution is the measure of how many pixels wide and tall each frame of a digital video is. The higher the resolution, the clearer the image will be.
You are using a program that can run multiple operating systems and manage hardware and storage. What are you most likely using? Choices: - Solid State Drive - An Embedded OS - Network Attached Storage - Hypervisor Type 1
Correct Answer: Hypervisor Type 1 Explanation: - A special type of software called a hypervisor can be used to run multiple operating systems on the same hardware in a process called virtualization. - A Network Attached Storage (NAS) device contains one or more hard drives that users can access over a network. - A Solid State Drive (SSD) is a device with similar capacity to a hard disk drive (HDD) that uses flash storage instead of magnetic disks to store data. SSDs are much faster and more durable than HDDs but are usually more expensive. - An embedded operating system (OS) is specialized read-only software designed to perform specific tasks for a device such as a digital camera or an ATM.
Becca is working on a program that will store data. The program will need quick access to data and data persistence is not important. Where should the data be stored? Choices: - In a flat file - In memory - In a database - In flash memory
Correct Answer: In memory Explanation: - Random Access Memory (RAM) is extremely fast, and the processor can read from and write to it billions of times each second. RAM is not persistent, which means if the system turns off, RAM loses everything it had stored in memory. But data persistence is not important in this scenario. - Flash memory, flat files, and databases all provide persistent storage, but much slower data access than RAM.
Which of the following is not an advantage of SSDs over HDDs? Choices: - Small and light - Low power consumption - Inexpensive - Durable
Correct Answer: Inexpensive Explanation: - Solid State Drives (SSDs) are generally more expensive than hard disk drives (HDDs). Some advantages of SSDs over HDDs include the following: - They are faster - They have no moving parts so they last longer - They have lower power consumption - They are less susceptible to physical damage (from dropping) and immune from magnetic fields - They are smaller and lighter
Which of the following lists the basic computing and processing steps in order? Choices: - Input, retrieval, output, and storage - Input/output, processing, and storage - Input, retrieval, processing, and storage - Input, processing, output, and storage
Correct Answer: Input, processing, output, and storage Explanation: - Input, processing, output, and storage are the basic computing and processing steps performed by a computer in order. - Retrieval is not a basic part of the process.
Carrol purchased a new printer and attached it to her workstation with a USB cable. The printer is powered on, but the computer does not recognize the printer. Which of the following should Carrol do next to be able to send print jobs to the printer? Choices: - Connect the printer to the network instead of a USB cable - Install the latest printer driver - Check for operating system updates - Upgrade the firmware on the printer
Correct Answer: Install the latest printer driver Explanation: - The next step would be to install the latest printer driver, which will allow the printer to be recognized by the operating system. - Checking for operating system updates will only update the operating system. - Upgrading the firmware would not be the next step. If the driver installation didn't resolve the issue, the firmware update may help resolve the issue if it is recommended by the printer manufacture. - Connecting the printer to the network is often more problematic than a direct connection. Many printer manufacturers suggest connecting the printer via a USB cable as part of troubleshooting, but not the other way around.
Which of the following companies is a manufacturer of CPUs? Choices: - Apple - DELL - Intel - nVidia
Correct Answer: Intel Explanation: - Intel is one of the biggest manufacturers of CPUs along with AMD. - nVidia is known for making graphic processing units (GPUs). - Apple and DELL both make computer systems but not the hardware inside of them.
Which of the following problems would be the MOST difficult to troubleshoot? Choices: - Software error - Hardware error - Overheating - Intermittent problem
Correct Answer: Intermittent Problem Explanation: - Intermittent problems are often the most difficult to troubleshoot as they can be very difficult to reproduce. In these situations, checking for environmental conditions such as kinked cables or overheated components can help. - Software errors are usually not the most difficult troubleshooting task. If the software is giving an error code, the manufacturer's website can often give additional assistance. - Overheating is not the most difficult issue to troubleshoot. - A hardware error is not the most difficult troubleshooting task. If you have problems identifying a hardware error, you can simplify the system by removing all but the necessary components (processor, memory, and hard disk). Add devices one at a time and restart the system. If an error occurs, remove the newly added device and proceed to troubleshoot it.
Abby needs a device that she can take to a client's location and show presentations from. Which of the following devices would be the BEST option for her? Choices: - Laptop - Server - Desktop computer - Gaming console
Correct Answer: Laptop Explanation: - A laptop would be Abby's best option because laptops are mobile and capable of running productivity software such as the presentation software she needs. - A desktop computer is not mobile and so would not be a good choice. - A gaming console is unable to use productivity software. - A server is not mobile and is not designed to run productivity software.
You are trying to connect a new USB device to your computer. You install the driver and then connect the device to an open USB port. The device does not work. Which of the following troubleshooting steps is the BEST to try first? Choices: - Try a different USB cable. - Make sure the USB device is plugged in properly. - Install a new USB controller card. - Replace the USB device.
Correct Answer: Make sure the USB device is plugged in properly. Explanation: - The first thing to check is whether the USB device is plugged in properly. If that doesn't correct the problem, you might try a different USB cable before doing more extensive troubleshooting. You should only replace the device or install a new USB controller card after verifying where the problem lies. For example, if you try the device on another computer and it still doesn't work, you might assume that the device is defective. If the device works on a different computer, then the USB ports on the first computer might be defective.
Which of the following is data temporarily stored on? Choices: - Keyboard - Memory chips - Printed page - Hard drive
Correct Answer: Memory Chips Explanation: - Data can be stored temporarily on memory chips (this is often considered to be part of processing). - A hard drive is used to store data long-term. - A keyboard is considered to be an input device - A printed page is considered to be output
Which of the following is an example of computer hardware? Choices: - Microchip - PowerPoint - Web browser - App
Correct Answer: Microchip Explanation: - A microchip is an example of hardware. Hardware comprises the physical components of a device such as the screen, keyboard, wires, and chips. - PowerPoint is an example of productivity software. - An app is a piece of software. - A web browser is a software application that lets you browse the internet.
Which invention made it possible to have an entire computer on a single circuit board? Choices: - Transistors - Silicon - Microchip - Vacuum tubes
Correct Answer: Microchip Explanation: - Jack Kirby invented the microchip in 1959. This made it possible to have an entire computer on a single circuit board. This made computers much smaller and cheaper to manufacture. - The transistor was invented in 1947. Transistors replaced bulky vacuum tubes and mechanical relays. This made computers smaller. - Silicon is the material used to make transistors. - Vacuum tubes were used in many early computers to relay information through the system.
Which of the following is NOT an example of an operating system? Choices: - Windows - Android - Microsoft - Linux
Correct Answer: Microsoft Explanation: - Microsoft is a company. Windows, Linux, and Android are all operating systems.
Where are values the computer is directly working with at a particular moment in time stored? Choices: - On RAM - On the CPU clock - On the CPU register - On the hard drive
Correct Answer: On the CPU register Explanation: - The CPU register stores values the computer is working with at a particular moment in time. - RAM stores the instructions for the CPU to execute as well as the results of any calculations that the processor doesn't need to work with at the given moment. - Hard drives are long-term storage for files and applications. - The CPU clock controls the speed that a processor executes instructions.
Which category of system software provides a platform for application software to run on? Choices: - Device Drivers - Firmware - Utility Software - Operating System
Correct Answer: Operating System Explanation: - Operating systems provide a platform that other applications can run on.
Which of the following divides a single physical disk into multiple logical drives called volumes? Choices: - Partitioning - Journaling - Defragmentation - Fragmentation
Correct Answer: Partitioning Explanation: - Partitioning is the process of dividing a single physical disk into multiple logical drives called volumes. - Fragmentation is when parts of a single file, program, or application are stored in different areas of a physical disk. - Defragmentation is a utility in which all fragmented files on a drive are found and reconsolidated into the same physical location on the disk. - Journaling is the process of tracking changes to a file so that a file can be repaired or restored in case of corruption or data loss.
Which of the following is a top cause of motherboard failure? Choices: - Liquid damage - Physical damage - Incompatible chipset driver - Corrupted BIOS
Correct Answer: Physical damage Explanation: - Physical damage is one of the top causes of motherboard failure. - Liquid will damage a motherboard, but it is not one of the top causes of motherboard failure. - A corrupted BIOS is not a top cause of motherboard failure. - An incompatible chipset driver is not a top cause of motherboard failure.
You are troubleshooting a malfunctioning notebook computer. Nothing appears on the LED display when the system is powered on. Which of the following is the BEST step to try first? Choices: - Replace the motherboard - Plug in an external monitor - Calibrate the battery - Replace the video card
Correct Answer: Plug in an external monitor Explanation: - If the built-in monitor isn't working, connect an external monitor to the laptop. If the display appears on an external monitor but not the built-in display, the problem could be a malfunctioning LED assembly or it could be due to the display output being redirected to the external monitor port using the Fn key. If you don't get a display on the internal or external monitor, you can assume that there is a problem with the video card. Repairing the video card typically means replacing the motherboard. You should calibrate the battery if your battery seems to be losing the ability to hold a charge or if the power drops shortly after starting to use it.
Which of the following components converts AC to DC? Choices: - Capacitor - Voltage regulator - Surge protector - Power supply
Correct Answer: Power supply Explanation: - A computer's power supply converts alternating current (AC) from the wall outlet to direct current (DC) used by the computer's internal components. - A voltage regulator is an electronic device that supplies the appropriate voltage to a processor. It does not convert the power input from one form to another; it only ensures that the voltage remains at the appropriate level for the device. A surge protector protects a system from power spikes. A UPS (uninterruptable power supply) provides backup AC power using a reserve battery.
Computers work by executing lists of instructions. Sometimes, computers need to run multiple lists of instructions at the same time. What is another name for the instructions? Choices: - Modules - Processes - Services - Tasks
Correct Answer: Processes Explanation: - Computers work by executing lists of instructions. Sometimes, computers need to run multiple lists of instructions, or processes, at the same time. - Processes can also be instances of services that operate in the background without user input. - Windows Task Manager provides an interface to view processes that are currently running, whether they have been started by applications or services. However, the term "task" generally refers to a unit or thread of program execution. - In software development, a module is a discrete piece of code that makes up part of an application.
While browsing the Internet on a Windows 10 workstation, the Internet Explorer browser window hangs and stops responding. Which Task Manager tab would you use to end Internet Explorer? (Select two.) Choices: - Details - Processes - Startup - Services - Performance
Correct Answer: Processes Explanation: - The Processes tab lets you switch to, start, or end an application. You could also use the Details tab to kill the process associated with the Internet Explorer application. Use either tab to stop a program that is not responding. - The Performance tab shows you overall system utilization and statistics. The Services tab shows a list of background services that are running on the system. The Startup tab shows a list of applications that launch automatically when the computer turns on.
A user has entered a search string into an application and clicked on the search icon. Which of the following is the NEXT step in the computing process? Choices: - Storage - Output - Processing - Input
Correct Answer: Processing Explanation: - Processing occurs after input has been provided to a computer. In this case, the user's input was a text string and mouse click. Processing takes the mouse click on the search icon to start the search process. - Input is information provided to a computing process. - Output is the result of a computing process. - Storage is where output data is retained for later.
Which of the following components stores values in short-term memory? Choices: - Hard drive - RAM - Flash drive - Processor
Correct Answer: RAM Explanation: - RAM stores values in short-term memory. - Hard drives store data in long-term memory. - Processors execute instructions stored in computer programs. - Flash drives are portable devices that store data in long-term memory.
Which of the following is NOT a long-term storage device? Choices: - Compact disc - Flash drive - RAM - Hard disk
Correct Answer: RAM Explanation: - Random-Access Memory (RAM) holds data in short-term memory. Hard disks, compact discs, and flash storage are all long-term memory solutions.
A typical computer monitor is which type of display? Choices: - Vector - RGB - White - Raster
Correct Answer: RGB Explanation: - Computer monitors are made up of tiny red, green, and blue lights. This is called an RGB display. - Raster (or bitmap) images are the most common kind of digital image. - Vector graphics are another type of image that stores points and curves instead of storing pixels. - White is not a type of computer display. White is displayed on a computer screen when all three RGB colors shine at the same time.
Which type of digital picture is made by storing individual pixel values? Choices: - Raster - Pixel map - High-res - Vector
Correct Answer: Raster Explanation: - Raster images, such as digital photographs, store the color value of each individual pixel.
Which of the following is often the hardest part of troubleshooting? Choices: - Asking the user questions - Documenting findings - Reproducing the problem - Implementing a solution
Correct Answer: Reproducing the problem Explanation: - Reproducing the problem is often the hardest part of troubleshooting. You might need to ask the user questions to identify exactly how the problem occurred, or you might need to watch them perform the task again in order to reproduce the problem. - Asking the user questions should not be a very difficult part of the troubleshooting process. - Your findings should be detailed, but documenting them is not unusually difficult. - Implementing a solution relies on reproducing the problem first, so it is not the hardest part of troubleshooting.
Which of the following is a lossless compression algorithm? Choices: - PNG - Run-length encoding - MP4 - Compression artifact
Correct Answer: Run-length encoding Explanation: - Run-length encoding is a common lossless compression algorithm. - A compression artifact is when patches of pixels appear to have less visible detail due to the compression. - MP4 is a type of audio file. - PNG is a type of image file.
Digital sound recordings capture sound waves and divide them into distinct segments. Each segment is assigned a value. What is that value called? Choices: - Sampling rate - Resolution - Bit depth - Sample height
Correct Answer: Sample height Explanation - Sound is caused by vibrating objects which create pressure waves in the air. Digital sound recordings capture this continuous wave and divide it into distinct segments. The recording then assigns a value to each segment. A single segment's value is called its sample height. - Recording programs must decide how much memory they should allocate to store the value of each sample. The amount of memory used is called the bit depth. - The sampling rate is how many individual samples are taken each second. This is measured in hertz (Hz). - Resolution is the measure of how many pixels wide and tall each frame of a digital video is.
On Windows, which application lets you add accounts, change passwords, manage power consumption, and personalize your computer's environment? Choices: - Start Menu - Control Center - Finder - Settings
Correct Answer: Settings Explanation: - On a Windows operating system, the Settings app allows you to customize many aspects of your computer's performance.
Which of the following provides a computer system with the ability to retrieve and manipulate data at a future time? Choices: - Processing - Transistor - Storage - Microchip
Correct Answer: Storage Explanation: - Storage is where output data is retained for later use. - A transistor is a smaller, faster, cheaper, and more durable electronic device that replaced mechanical relays. - Input is information provided to a computing process. - A Microchip is an electronic device that allowed entire computers to be built into a single board.
Match each item on the left to its appropriate category on the right. Categories: - Hardware: - Software: Choices: - Touchscreen - RAM - Operating System - Power Cable - Internet Browser - Monitor - Video Game - Video Game Controller
Categories: - Hardware: - Monitor - Power Cable - Video Game Controller - Touchscreen - RAM - Software: - Operating System - Internet Browser - Video Game Explanation: - Hardware refers to parts of the computer you can see and touch. Monitors, touchscreens, power cables, RAM, and video game controllers are all hardware. - Software refers to computer programs and applications that run on hardware. Internet browsers, operating systems, and video games are all software.
Drag the system component on the left to the device or program that fits with the system component. Backup software: Games console: Disk cleaner: Television: Antivirus software: Video card: Choices: - Utility software - Firmware - Device drivers
Correct Answer: Backup software: Utility software Games console: Firmware Disk cleaner: Utility software Television: Firmware Antivirus software: Utility software Video card: Device drivers Explanation: - Utility software analyzes, configures, and optimizes a computer. Some common types of utility software are backup software, compression software, disk cleaners, and antivirus software. - Firmware is preinstalled, read-only software that tells a device how to work. Firmware can be found in televisions, remote controls, game consoles, printers, cameras, music players, and even automobiles. - A device driver is software that helps an operating system communicate with hardware devices such as printers, video cards, scanners, and cameras.
Match each feature to whether it influences audio or video quality. Audio: Video: Choices: - Sampling Rate - Bit Depth - Frame Rate - Resolution - Color Depth
Correct Answer: Audio: - Sampling Rate - Bit Depth Video: - Frame Rate - Resolution - Color Depth Explanation: - Sampling rate is a measure of how many samples are made from an audio wave each second. - Bit depth is how many bits are used to encode each individual sample in an audio recording. - Frame rate is the measure of how many individual images are shown each second in a video. - Resolution is the measure of how many pixels are in each individual image in a picture or video. - Color depth is a measure of how many bits are used to encode each color in a picture or video.
Which of the following transfer rates is the FASTEST? Choices: - 1,282 Kbps - 181 Mbps - 1.24 Gbps - 1,480 Mbps
Correct Answer: 1,480 Mbps Explanation: - 1,480 Mbps is equal to 1.48 Gbps, and so it is the fastest transfer rate listed because it is greater than 1.24 Gbps. In summary, 1,480 Mbps > 1.24 Gbps > 181 Mbps > 1,282 Kbps.
Which of the following voltages from an ESD discharge would be the minimum to short a computer's hardware components? Choices: - 3.3 volts - 100 volts - 5 volts - 12 volts
Correct Answer: 100 volts Explanation: - An ESD discharge as small as 100 volts can damage a computer's components. - The choices 12, 5, or 3.3 volts are common voltages used for powering components. A ESD discharge this small wouldn't hurt a component.
Which of the following is the correct binary representation of the number 22? Choices: - 10101 - 10111 - 11000 - 10110
Correct Answer: 10110 Explanation: - 10110 in binary is the same as 22 in decimal. - 10101 in binary is the same as 21 in decimal. - 10111 in binary is the same as 23 in decimal. - 11000 in binary is the same as 24 in decimal.
How many possible values would an 8-bit audio sample have? Choices: - 65,000 - 256 - 256,000 - 16
Correct Answer: 256 Explanation: - Bit depth is the amount of memory used to store each value of a sample. The better the bit depth, the better the sound quality. 8-bit sound uses 8 bits (or 1 byte) to store the value of each sample, which means the sample can be 1 of 256 values. - None of the other options are possible values of an 8-bit sample.
A consumer wants to add a hard drive to their computer to store video from their camera. Which of the following is the storage capacity of a modern hard disk drive (HDD) purchased from a computer store? Choices: - 4 gigabytes - 1,024 kilobytes - 3 terabytes - 8 megabytes
Correct Answer: 3 terabytes Explanation: - Storage of modern hard disk drives are available in multiples of terabytes. The other capacities are too small to work well for video storage. Listed in order of increased capacity: kilobyte > megabyte > gigabyte > terabyte.
Which of the following is the term for a device (usually external to a computer) that is plugged into a computer's communication port or connected wirelessly? Choices: - An attachment - A plug-in - A peripheral - A flash drive
Correct Answer: A peripheral Explanation: - Peripherals are hardware devices that are connected to a computer system to enhance its functionality.
Which kind of file would be hurt most by a lossy compression algorithm? Choices: - A text document - An audio file containing music - A digital photograph - An audio file containing speech
Correct Answer: A text document Explanation: - Audio and image files use lossy compression to take advantage of the limitations of human sight and hearing. However, text files and computer programs need to be stored with no data loss, or they will be corrupted. They are usually compressed using lossless algorithms, which compress the file without altering any of the data.
Which CPU type would MOST LIKELY be found in a smartphone? Choices: - x64 - IA-64 - x86 - ARM
Correct Answer: ARM Explanation: - Most tablets and smartphones use ARM processors. ARM processors use a reduced instruction set, which means they can't do as many things as x86 processors can. - x86 processors are 32-bit CPUs used in computer systems. - x64 processors are 64-bit CPUs used in computer systems. - IA-64 processors were special CPUs developed by Intel that were only used in servers.
Which component gets things running until the operating system takes over? Choices: - Firmware - Memory - CPU - BIOS
Correct Answer: BIOS Explanation: - The basic input/output system (BIOS) is software that is contained on a memory chip on the computer's motherboard and is the first software that is run whenever a computer is started. It gets things running until the operating system takes over. The BIOS is created in such a way that it is non-volatile, which means that its settings are saved and can be recovered even after the device has been powered off. - Firmware functions as a rudimentary operating system for electronic devices that wouldn't normally be considered computers. - A processor, also known as a Central Processing Unit (CPU), is equivalent to the brains of your computer. - RAM, or random access memory, keeps track of instructions and values that your computer is working with at a given time.
Which of the following computer components is the MOST important part of any modern computer? Choices: - RAM - NIC - BIOS - CPU
Correct Answer: CPU Explanation: - The CPU is the most important part of any modern computer system because it controls the other parts of the computer. - RAM is the main memory of a computer. It can be quickly accessed by the CPU and is where the computer stores data and instructions that it is actively using. - A network interface card (NIC) is a component (sometimes built into the CPU and sometimes plugged into the motherboard) that provides network connectivity. - The BIOS makes sure all necessary parts are plugged in and working properly on bootup.
Which hardware component processes data? Choices: - CPU - HDD - SSD - RAM
Correct Answer: CPU Explanation: - The CPU, or Central Processing Unit, processes data. - RAM stores values in short-term memory. - HDD and SSD are two types of long-term memory storage.
A computer has power, but there are no beeps and the computer does not boot. Which of the following would be the MOST LIKELY cause? Choices: - No operating system installed - Outdated BIOS - CPU failure - Hard drive failure
Correct Answer: CPU failure Explanation: - A CPU failure would be the most likely cause for these symptoms. If the CPU is bad, the computer won't be able to POST (Power-On Self-Test). There will still be power but no beep codes or any other activity. - If there is no operating system installed, the computer will boot to an error screen. - A hard drive failure would allow the computer to boot to an error screen. - A outdated BIOS would not cause a system to be unable to boot.
You recently purchased a new sound card and installed it in a free PCI slot in your computer. You plug in your old speakers, but you don't get any sound. You have checked all cable connections, and they are secure. You have also ensured that the speaker volume is appropriately adjusted and isn't muted. Which of the following BEST describes the next step you should perform? Choices: - Manually change the IRQ settings for the card. - Replace your sound card. - Check the vendor's website for an updated driver. - Replace the speakers.
Correct Answer: Check the vendor's website for an updated driver. Explanation: - Check the vendor's website for an updated driver before further troubleshooting. Because the speakers worked before, you probably won't need to replace the speakers. PCI cards are plug-and-play, meaning that you should not need to manually configure resources such as IRQs. You should troubleshoot the problem completely before you resort to replacing the sound card.
Which of the following BEST describes what a kilobyte is a measurement of? Choices: - Power level - Storage space - CPU speed - Data throughput
Correct Answer: Storage space Explanation: - Data storage usually refers to the number of bytes. Storage space on a disk is measured in kilobytes (KB), megabytes (MB), gigabytes (GB), and terabytes (TB). - Throughput, or data transmission from one computer to another, usually refers to the number of individual bits that can be transmitted in one second. Throughput is measured in kilobits per second (Kbps), megabits per second (Mbps), and gigabits per second (Gbps). - The base unit of measure for CPU speed is hertz (Hz) and is recorded in kilohertz (kHz), megahertz (MHz), and gigahertz (GHz). These units of measurement refer to the number of CPU cycles per second, or the number of times per second the processor can write data to memory or read data from memory. - Power & sleep options are used to regulate how much electricity a computer system consumes. They determine how long your computer can be idle before turning off the screen or putting it into a low-power sleep mode.
Which of the following played vital roles in the advancement of national defense, science, and social change? Choices: - Supercomputers - Hollerith's Tabulating Machine - Smartphones - Microchip
Correct Answer: Supercomputers Explanation: - Supercomputers have processing capabilities designed to solve problems that are too complex for regular computers. They play vital roles in the advancement of national defense, science, and social change. - A smartphone is a mobile phone that functions as a computer and allows users to access the internet. - Hollerith's Tabulating Machine was an early computing machine that used punched cards and metal pins. It was used to compile the 1890 US census. - Microchips paved the way for personal computer ownership.
Which of the following is primarily operated by a touchscreen? Choices: - Tablet - Network - Notebook - Desktop
Correct Answer: Tablet Explanation: - Mobile devices, such as tablets and smartphones, are operated primarily through their touchscreens. - Notebooks sometimes have touchscreens but are generally operated with the mouse and keyboard. - Desktops are almost always operated through the mouse and keyboard. - Networks are groups of computers that can share information with each other.
What are pixels that are the exact same between multiple frames called? Choices: - Run-length encoding - Temporal redundancy - Lossless compression - Compression artifact
Correct Answer: Temporal redundancy Explanation: - Temporal redundancy is when pixels in multiple frames are the exact same. Reusing these pixels is a common compression technique. - Run-length encoding is a common lossless compression algorithm. - A compression artifact is when patches of pixels appear to have less visible detail due to the compression. - Lossless compression is a compression algorithm that doesn't affect the original data.
Which of the following is a disadvantage of notebook systems? Choices: - The battery is difficult to replace. - They are more expensive. - Productivity apps are difficult to use. - They require AC power.
Correct Answer: They are more expensive. Explanation: - Notebook systems are usually more expensive than comparable desktop systems. - Difficulty replacing the battery and using productivity apps are disadvantages of mobile devices. - Requiring AC power to operate is a disadvantage of desktop computers.
Which of the following is a type of input device? Choices: - Monitor - Speakers - Touchscreen - Hard drive
Correct Answer: Touchscreen Explanation: - Touchscreen is the only option that is an input device. Input devices are used to physically put information into the computer. - Speakers and monitors are both output devices. - A hard drive is a storage device.
Which invention allowed computers to become smaller in size? Choices: - Vacuum tubes - Silicon - Transistors - Laptops
Correct Answer: Transistors Explanation: - The transistor was invented in 1947. Transistors replaced bulky vacuum tubes and mechanical relays. This made computers smaller. - Vacuum tubes were used in many early computers to relay information through the system. - Silicon is the material used to make transistors, but it is not what allowed computers to become smaller in size. - Laptops are smaller, portable computers. They are not the invention that allowed computers to become smaller in size.
Which kind of connector is pictured here? Choices: - NEMA 5-15R - LC/SC - USB - RJ-45
Correct Answer: USB Explanation: - The connector pictured is a male USB A connector.
Which type of connector is commonly used for keyboards and mice? Choices: - RCA - TRS - XLR - USB
Correct Answer: USB Explanation: - USB, or Universal Serial Bus, is used for mice, keyboards, flash drives, and many other common peripherals.
Which connector on the back of a computer is used to attach a mouse to a modern PC system? Choices: - Mini-DIN - High-density (three row), female DB-15 - RJ-45 - Low-density (two row), female DB-15 - USB B - USB A
Correct Answer: USB A Explanation: - A mouse is most commonly attached to a computer using a USB A connector. 6-pin mini-DIN connectors were used to attach a mouse in the past; however, mini-DIN connectors are not used today. The DB-15 connector with two rows is commonly used for joysticks. The DB-15 connector with three rows is used for connecting CRT monitors to the video card. The RJ-45 connector is used for Ethernet network connections. USB B connectors are commonly used for connecting printers and scanners.
Which of the following encoding schemes would MOST likely be used to represent an emoji? Choices: - ASCII - Unicode - Hexadecimal - Binary
Correct Answer: Unicode Explanation: - Unicode is an international 16-bit encoding standard and is capable of representing millions of different characters with enough space for every character from every human language. Developers have even started assigning Unicode values to pictures, called emoji. - ASCII is short for American Standard Code for Information Interchange. It is the most common format for plain text files, where each character is represented by a unique 7-bit binary code. Extended ASCII uses an 8-bit binary code and allows for some international characters, but not emoji. - Hexadecimal is a numbering system that uses sixteen digits, 0 through 9, and A through F. Binary is a numbering system that uses two digits, 0 and 1. Binary and hexadecimal are NOT encoding schemes.
A user was working on a spreadsheet when the application became unresponsive. After waiting several minutes, the application is still unresponsive. Which of the following is the BEST action for the user to take? Choices: - Repair the application - Continue to wait - Use Task Manager to end task - Reinstall the application
Correct Answer: Use Task Manager to end task Explanation: - The user has already waited for the application and therefore the best option is to use Task Manager to kill (or end) the task. - Continuing to wait is not typically a good option if the user has already waited a reasonable amount of time. - Reinstalling the application will not resolve a hung state of an application. The task would have to be killed first and the computer might need to be rebooted to close open files before the program could be reinstalled. - Repairing the application is helpful in some cases, but it would also require the application to be closed completely before the repair process could take place.
Disk cleaners, antivirus software, backup tools, and file compressors are which kind of system software? Choices: - Utility Software - Device Drivers - Firmware - Operating System
Correct Answer: Utility Software Explanation: - Utility software analyzes, configures, optimizes, or maintains a computer system.
Which type of digital picture can be scaled to any size without losing quality? Choices: - Transparent - High-res - Vector - Raster
Correct Answer: Vector Explanation: - Vector images, such as fonts, can be scaled to any size without losing image quality.
You need to test a version of macOS but only have a Windows computer. What technology could you use? Choices: - Embedded OS - Supercomputer - Firmware/BIOS - Virtualization
Correct Answer: Virtualization Explanation: - Virtualization is the process of running a virtual instance of a computer system in its own partition on a computer. It creates a software-based representation of something, such as an application, server, network, or storage. This is often done in order to run multiple operating systems on a single computer, such as running a version of Windows and a version of macOS on the same system. Using virtualization can help reduce technological expenses and create smoother operating processes. - An embedded operating system (embedded OS) is specialized read-only software designed to perform specific tasks for devices like digital cameras or ATMs. - Firmware/BIOS provide persistent storage while the computer is powered off. They do this, however, for system settings but not user data. - A supercomputer is a name given to the fastest, most powerful computers of a time period.
Every Windows system has a database that stores setting changes such as switching the home page of your web browser. What is this called? Choices: - Operating system - Windows Registry - Embedded OS - Computer system
Correct Answer: Windows Registry Explanation: - The Windows Registry is a database that stores settings for the operating system and other programs. - An operating system (OS) is a computer program that makes it possible for people, hardware, and software to interface with each other in a meaningful way. - A computer system consists of hardware, application software, and a human being that operates the system. - Many devices (such as gaming consoles, televisions, and smart cars) have embedded operating systems called firmware.
Which of the following was the most widely used personal computer application until the mid-90s? Choices: - Word processing - United States census - Games - Internet
Correct Answer: Word processing Explanation: - Word processing was the most widely used personal computer application until the mid-90s, when the world wide web became available to the public. - Video arcades were very popular, but these games weren't heavily played on personal computers. - The internet first became available to the public in the mid-90s and quickly became a part of everyday life. - The first electronic computing machine was invented by Herman Hollerith to compile data for the 1890 United States census.
How many bits are in a single byte? Choices: - four - eight - twelve - sixteen
Correct Answer: eight Explanation: - One byte is made of eight bits. Each byte has 256 possible combinations from 00000000 to 11111111.
Put the following events from computer history in the order they happened: Drag events here with the oldest at the top: - International Business Machines, or IBM, is formed - Apple releases the iPhone - Herman Hollerith develops electronic tabulating machine - Jack Kilby invents the microchip - The World Wide Web becomes available to the public - Scientists at Bell Laboratories invent the transistor - The Apple II is released for home consumers
The correct order is: - Herman Hollerith develops electronic tabulating machine (1890) - International Business Machines, or IBM, is formed (1911) - Scientists at Bell Laboratories invent the transistor (1947) - Jack Kilby invents the microchip (1959) - The Apple II is released for home consumers (1977) - The World Wide Web becomes available to the public (1994) - Apple releases the iPhone (2007)
Joe, a bookkeeper, works in a cubicle environment and is often called away from his desk. Joe doesn't want to sign out of his computer each time he leaves. Which of the following are the BEST solutions for securing Joe's workstation? (Select two). Choices: - Configure the screen lock to be applied after a short period of non-use. - Change the default account names and passwords. - Apply multifactor authentication. - Set a strong password. - Configure the screen saver to require a password.
Correct Answers: - Configure the screen lock to be applied after a short period of non-use. - Configure the screen saver to require a password. Explanation: - The best solution is to configure the screen saver or screen lock to be applied after a short period of non-use and to require a password to return to the desktop. - Setting a strong password is a best practice, but is not the best solution in this scenario. - Applying multifactor authentication will make it harder to hack the workstation, but this is not the best solution in this scenario. - Changing the default account names and passwords will make the workstation more secure, but this is not the best solution in this scenario.
Which of the following are optical storage devices? (Select three.) Selection: - - - Choices: - SSD - USB flash drive - HDD - DVD - SDHC - CD - BD
Correct Answers: - DVD - CD - BD Explanation: - Optical storage devices use lasers for both reading and writing information. The following are all optical storage devices: - CD (Compact Disc) - DVD (Digital Video Disc or Digital Versatile Disc) - BD (Blu-ray Disc) - HDDs (Hard Disk Drives) are magnetic storage devices. A flash device stores information using programmable, non-volatile flash memory. USB flash drive, SSDs (Solid State Drives), and SDHC memory cards are flash devices.
An employee submitted a support ticket stating that her computer will not turn on. Which of the following troubleshooting steps should you take first? (Select two.) Choices: - Open the computer and replace the power supply. - Make sure the power cord is plugged into the wall. - Make sure the keyboard and mouse are plugged in. - Use a multimeter to test the power supply. - Make sure the surge protector is turned on.
Correct Answers: - Make sure the power cord is plugged into the wall. - Make sure the surge protector is turned on. Explanation: - When troubleshooting the power supply, always check the - following before opening up the computer: - Make sure the power cord is plugged into the wall. - Verify any surge protectors are plugged in and in the on position. - Make sure the power supply's switch is in the on position. - Only after you identify the power supply is the problem should you replace it. The keyboard and mouse being unplugged will not prevent the computer from powering on. - Testing the power supply using a multimeter should be done only after the obvious has been ruled out.
A customer has brought a computer in to be repaired. He said he thinks that the sound card has stopped working because no audio is produced when music, video, or DVDs are played. Which troubleshooting step should you take first? (Select two.) Choices: - Verify that no IRQ or I/O port address conflicts exist between the card and other devices in the system. - Verify that the volume isn't muted. - Download and install the latest sound card drivers. - Verify that speakers are plugged into the correct jack and are powered on. - Replace the sound card with a known-good spare.
Correct Answers: - Verify that the volume isn't muted. - Verify that speakers are plugged into the correct jack and are powered on. Explanation: - You should first verify that the speakers are plugged in correctly and powered on. You should also verify that the volume isn't muted in the operating system. - Before investigating more complex possibilities, you should always check the obvious first when troubleshooting computer problems. The other actions might need to be performed if checking the obvious solutions does not correct the problem.
Match the storage device types on the left with the description and benefits on the right. Choices: A thick magnetic disk made of aluminum platters. Uses read/write heads to access data stored on the platters. - A flash device with storage capacity similar to a small hard drive. - Uses lasers to read and write information stored in the form of pits in their reflective coating. - Up to several TB in storage capacity and cost per MB is cheap. - Faster than other devices. No moving parts. Last longer than other storage devices. - Ideal for music and video. Portable and cheap with a long shelf life. - Selections: - Hard disk drive (HDD) - Solid state drive (SSD) - Optical disc drive
Correct Answers: A thick magnetic disk made of aluminum platters. Uses read/write heads to access data stored on the platters. - Hard disk drive (HDD) A flash device with storage capacity similar to a small hard drive. - Solid state drive (SSD) Uses lasers to read and write information stored in the form of pits in their reflective coating. - Optical disc drive Up to several TB in storage capacity and cost per MB is cheap. - Hard disk drive (HDD) Faster than other devices. No moving parts. Last longer than other storage devices. - Solid state drive (SSD) Ideal for music and video. Portable and cheap with a long shelf life. -Optical disc drive Explanation: - Hard disk drives (HDD) are thick magnetic disks made of aluminum platters. They use read/write heads to access data stored on the platters. They have up to several TB in storage capacity and their cost per MB is cheap. - Solid state drive (SSD) is a flash device with storage capacity similar to a small hard drive. They are faster than other devices. They have no moving parts and last longer than other storage devices. - Optical discs use lasers to read and write information that is stored in the form of pits in their reflective coating. They are ideal for storing and playing music and video. They are portable and cheap and have a long shelf life.
Which of the following devices generally include a variety of integrated hardware such as a camera? (Select two.) Choices: - Desktop computer - Gaming console - Laptop - Smartphone - Server
Correct Answers: Laptop, Smartphone Explanation: - Smartphones and laptops both include integrated hardware such as wireless network cards, cameras, and more. - Desktop computers are highly customizable, but peripheral devices are not integrated. They are separate devices that are attached externally or manually installed inside the computer. - Servers and gaming consoles do not generally include a variety of integrated hardware.
Which of the following devices make use of a battery as its main power source? (Select two.) Choices: - Desktop - Gaming console - Smartphone - Server - Laptop
Correct Answers: Smartphone, Laptop Explanation: - Smartphones and laptops both make use of a battery so that they can operate without being plugged into an AC power supply. - Desktops, servers, and game consoles all require AC power to operate.
Arrange the following from smallest to largest. - Megabyte - Kilobyte - Terabyte - Gigabyte
Correct Order: - Kilobyte - Megabyte - Gigabyte - Terabyte Explanation: - A kilobyte is the same as 1024 bytes. - A megabyte is about a million bytes, or 1024 kilobytes. - A gigabyte is about a billion bytes, or 1024 megabytes. - A terabyte is about a trillion bytes, or 1024 gigabytes.
