ITF-U61Domain 1-2
Which of the following lists the throughput rates (bits per second) from slowest to fastest? 1. Mbps, Kbps, Tbps, Gbps 2. Gbps, Kbps, Mbps, Tbps 3. Tbps, Gbps, Mbps, Kbps 4. Kbps, Mbps, Gbps, Tbps
Kbps, Mbps, Gbps, Tbps Kbps, Mbps, Gbps, and Tbps are the slowest to fastest throughput rates. Kbps is 1,000 bits per second, Mbps is 1,000,000 bits per second, Gbps is 1,000,000,000 bits per second, and Tbps is 1,000,000,000,000 bits per second.
Multiple computers configured to be able to communicate and share information with each other form a ____________. 1. Network 2. Family 3. Commune 4. Group
Network Whenever two or more computers are configured to share information with each other, they're called a network.
Which of the following-colored jacks on an audio card would you connect a microphone to? 1. Light blue 2. Orange 3. Lime 4. Pink
Pink Pink - Audio in jack used for microphones
Sean is in the market for a new computing device he can take on vacation. He wants to be able to read e-books, watch movies, and videoconference with co-workers if needed. Which type of device should he purchase? 1. A tablet 2. A laptop 3. An all-in-one computer 4. A larger, newer phone
A tablet A tablet is the best choice. Most new tablets have long battery lives, built in Wi-Fi capabilities, and built-in speakers and cameras for video conferencing.
Which hardware component processes data? 1. SSD 2. CPU 3. HDD 4. RAM
CPU The CPU, or Central Processing Unit, processes data.
Given the numerical value 1010101.11, which of the following number systems is MOST likely represented? 1. Octal 2. Decimal 3. Hexadecimal 4. Binary
Decimal 1010101.11 represents a decimal number with two decimal places that consist of 1s and 0s.
For many years, computers placed data on hard drives magnetically using platters coated with an iron oxide. Modern computers are now using the more modern solid-state drives, which are faster and less prone to mechanical failures. Which component is used inside a solid-state drive to store data? 1. ROM 2. Cache 3. Flash memory 4. RAM
Flash Memory You can store information at higher speeds with flash memory (like RAM does), but information is not lost if the power is removed. It is considered non-volatile memory
Arrange the following from smallest to largest. Smallest Kilobyte Megabyte Gigabyte Terabyte
Kilobyte Megabyte Gigabyte Terabyte
Which of the following components stores values in short-term memory? 1. RAM 2. Hard drive 3. Flash drive 4. Processor
RAM RAM stores values in short-term memory.
Which of the following is NOT a long-term storage device? 1. Flash drive 2. RAM 3. Hard disk 4. Compact disc
RAM Random-Access Memory (RAM) holds data in short-term memory. Hard disks, compact discs, and flash storage are all long-term memory solutions.
Which of the following provides a computer system with the ability to retrieve and manipulate data at a future time? 1. Microchip 2. Transistor 3. Storage 4. Processing
Storage Storage is where output data is retained for later use.
What is the maximum supported transfer rate for the IEEE 1394b standard? 1. 480 Mbps 2. 800 Mbps 3. 400 Mbps 4. 5 GBps
800 Mbps The IEEE 1394b, or Firewire 800, standard supports a maximum transfer rate of 800 Mbps. USB 2.0 supports a maximum transfer rate of 480 Mbps. IEEE 1394, or Firewire, supports a maximum transfer rate of 400 Mbps. USB 3.0 supports a maximum transfer rate of 5 Gbps.
Which of the following components converts AC to DC? 1. Power supply 2. Surge protector 3. Capacitor 4. Voltage regulator
A computer's power supply converts alternating current (AC) from the wall outlet to direct current (DC) used by the computer's internal components.
Frank has purchased a new Apple laptop, and he also wants to purchase a new mobile phone. He wants to be able to synchronize applications between the two devices. Which type of mobile device should Frank purchase? 1. Apple iPhone 2. Google Pixel 3. Windows phone 4. Android phone
Apple IPhone Because Frank purchased an Apple computer, it would be easiest to sync his communications with an Apple mobile phone.
Your client's computer keeps attempting to boot to the network adapter. You need to change it to boot to the hard drive that has the operating system installed on it. Where would you go to change the boot order? 1. BIOS/UEFI 2. Network Settings 3. Windows Settings 4. Disk Management
BIOS/UEFI A computer's boot order is configured in the BIOS/UEFI. In this scenario, the computer is set to boot from the network adapter instead of the hard drive.
A network host has an IPv4 address of 192.168.12.155. Which of the following notational systems is used to represent this IP address? 1. Binary 2. Octal 3. Hexadecimal 4. Decimal
Decimal The decimal number system uses ten digits from 0 to 9. The IP address shown is in dotted decimal notation
How many bits are in a single byte? 1. four 2. eight 3. twelve 4. sixteen
Eight One byte is made of eight bits. Each byte has 256 possible combinations from 00000000 to 11111111.
Which of the following is a wired networking method most commonly used today by desktop PCs and other network devices to connect to a local area network? 1. Bluetooth 2. Ethernet 3. Token Ring 4. ArcNet 5. 802.11n
Ethernet Ethernet is a wired, local area network (LAN) standard. Most laptops and desktop computers have built-in Ethernet network ports.
Which of the following is NOT an optical storage device? 1. Compact disc 2. Digital video disc 3. Hard disk 4. Blu-ray disc
Hard Disk CDs, DVDs, and Blu-ray discs are all examples of optical storage devices. Hard disks are magnetic storage devices.
Which of the following notational systems is MOST likely used to represent a MAC address? 1. Binary 2. Decimal 3. Octal 4. Hexadecimal
Hexadecimal 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.
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? 1. Make sure the USB device is plugged in properly. 2. Try a different USB cable. 3. Install a new USB controller card. 4. Replace the USB device.
Make sure the USB device is plugged in properly. 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.
Which of the following are wired components that allow a computer to connect to an internal company network? (Select two.) -Network interface port -RJ-45 Cable -Switch -RJ-11 cable -Router
Network interface port, RJ-45 cable An RJ-45 network cable connects a computer to a wired network. A network interface provides an RJ-45 or fiber port into which a network cable (such as an RJ-45 cable) can be connected.
Which of the following are optical storage devices? (Select three.) -CD -SSD -DVD -BD -SDHC -USB flash drive -HDD
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)
Which of the following connectors are used to terminate a Cat 5e and Cat 6a network cable? 1. RJ-45 2. LC 3. BNC 4. RJ-11
RJ-45 The RJ-45 connector is used to terminate copper network cabling
Which of the following is a type of peripheral input device that can be integrated into a laptop computer to provide digital camera functionality? 1. Graphics card 2. Monitor 3. Webcam 4. Image scanner
Webcam Mobile devices already include integrated cameras, so they are not commonly used with external digital cameras and webcams. For example, webcams are input devices that are most often installed in a laptop just above the screen.
Which of the following BEST describes a motherboard? 1. A unit that supplies electricity to computer components 2. A printed circuit board that contains sockets and slots for upgradeable components 3. A chip that makes sure all necessary parts are plugged in and working properly on bootup so that the operating system can start loading 4. A chip that controls all other parts of a computer by getting information from them and then telling them what to do
A printed circuit board that contains sockets and slots for upgradeable components
Which of the following is the best definition of a bit? Incorrect response: 1. A measure of computer graphics and sound 2. A single 1 or 0 in a digital signal 3. A physical signal that becomes a digital signal 4. An electrical signal in a wire
A single 1 or 0 in a digital signal A bit is a single 1 or 0 in a binary digital signal. Eight bits together form a byte.
Which of the following is responsible for verifying that all required components are operating properly before allowing the operating system to begin loading? 1. BIOS 2. GPU 3. CPU 4. RAM
BIOS The Basic Input/Output System (BIOS) chip makes sure that all required components are plugged in and working properly on bootup. If so, it then tells the operating system to start loading.
Which of the following technologies allows data to be transferred between the RAM and CPU twice per cycle? 1. Dual-channel RAM 2. DDR 3. CMP 4. SMP
DDR Double data rate (DDR) allows data to be transferred between the RAM and CPU twice per cycle.
Which of the following are examples of input devices? (Select two.) 1. Keyboards 2. Touch Screens 3. Projectors 4.Monitors 5. Speakers
Keyboards, Touch Screens Before a computer can work, someone needs to physically put information into it. In computer terms, this is called input. Pressing a key on a keyboard, clicking a mouse, tapping a touchscreen, pushing a button on a game controller, and speaking into a microphone are all examples of input.
Paul has been asked to install a new printer. The most important requirement is that the printer needs to be fast. Which of the following printer types is the fastest? 1. Laser printer 2. Inkjet printer 3. 3D printer 4. Dot matrix printer
Laser Point Laser printers are generally the fastest type of printer. Printing speed is especially noticeable for high-volume print jobs.
Which of the following wireless communication technologies can be described as follows? -Has a very limited transmission range, of less than two inches -Used with credit cards and passports -Slower than other wireless technologies -Constantly emitting a signal 1. Infrared in diffuse mode 2. NFC 3. IEEE 1394 4. Infrared in line-of-sight mode 5. Bluetooth
NFC Near Field Communication, or NFC, uses the 13.56 MHz frequency and has a very short range. In order for devices to communicate, they have to be within two inches of each other. NFC chips are being used for such applications as passports and credit cards to contain all the information about the passport holder or the credit card account. NFC chips use encryption algorithms to secure the connection but are constantly emitting a signal and use a much slower transmission speed than other wireless technologies.
You have recently issued new mobile phones to the sales team in your company. Each phone has the ability to store and transmit encrypted information for such things as making payments at a checkout counter. Which of the following is the technology being used in these phones? 1. NFC chips 2. VPN 3. Bluetooth transmitters 4. Infrared transmitters
NFC chips Near field communications (NFC) chips are a wireless mobile technology that can be embedded in credit cards and smartphones for transmitting financial information when making payments. For example, many point-of-sale devices can read information from NFC chips. NFC chips can also be used in passports to contain identity information.
Which of the following does a computer use to make sure that people, hardware, and software can interface with each other? 1. OS (operating system) 2. Application and hardware interface 3. GUI (graphical user interface) 4. Device driver
OS (operating system) For a computer system to function, three very different things need to work together: hardware, application software, and a human being. An operating system, or OS, is a computer program that makes it so people, hardware, and software can interface with each other in a meaningful way.
Jonathan has a computer with an older PC bus interface and is getting a fiber optic connection for his home office. Which of the following BEST describes the processing speed environment? 1. The older PC bus runs at a KHz processing speed, while the fiber optic network equipment runs at a MHz processing speed. 2. Both the older PC bus and the fiber optic equipment run at a MHz processing speed. 3. Both the older PC bus and the fiber optic equipment run at a KHz processing speed. 4. The older PC bus runs at a MHz processing speed, while the fiber optic network equipment runs at a GHz processing speed.
Older PC bus interfaces run at a MHz (megahertz) processing speed. Fiber optic network equipment runs at a GHz (gigahertz) processing speed. The based unit of measurement for processing speeds is a hertz (Hz). 1 kilohertz (KHz) equals one thousand Hz, one megahertz equals one million Hz, and 1 gigahertz (GHz) equals one billion Hz.
One option that a computer has for the information gathered in data processing is to return information to the user. Which of the following BEST describes this process? 1. Output 2. Peripheral device 3. Speaker 4. Input
Output One option that a computer has for the information gathered in data processing is to return information to the user. This is called output. Examples of output are images on a screen, sounds from speakers, and printed pages.
Which of the following makes sure that all the computer system hardware is in working order before loading the operating system? 1. Basic Input/Output System (BIOS) 2. Power-On Self-Test (POST) 3. Unified Extensible Firmware Interface (UEFI) 4. Device drivers
Power-On Self-Test (POST) If your computer does have power, it runs a Power-On Self-Test (POST) when booted. This test ensures that all the computer hardware is in working order before loading the operating system.
Which of the following-colored jacks on an audio card would you use to connect a 5.1 speaker set? Silver Orange Correct Answer: Lime Pink Brown Black Light blue
To connect a 5.1 speaker set, you would use the lime, black, and orange jacks. Lime - Audio out for the main stereo speakers Black - Audio out jack used for rear stereo speakers Orange - Audio out jack used for center channel and subwoofer
Which of the following components is NOT required to create a network? 1. Network media 2. Network interfaces 3. Computer systems 4. Wireless adapter
Wireless adapter Networks are made of computer systems, network media, and network interfaces. Wireless adapters may be used in a network but are not necessary.