A+ Study

You suspect that an uninterruptible power supply (UPS) is malfunctioning. You need to test the output from the UPS using a multimeter. Which multimeter setting should you use?

DC Voltage

You need to implement a RAID level that duplicates a partition on another physical disk, providing two identical copies of the data. Which RAID level should you use?

RAID Level 1, also known as disk mirroring, duplicates the original disk, and this duplicate is placed on a separate disk, creating a "mirror." Disk mirroring requires two disks of equal size. It is simple to implement and offers fast recovery if a single disk fails

You are adding a new computer to an existing 1000BaseT network. Which cable connector is used in this network?

RJ-45 The RJ-45 cable connector is used in a gigabit Ethernet or 1000BaseT network. The RJ-45 connector is used with unshielded twisted-pair (UTP) copper wire cabling and can be used to carry data at up to 1,000 Mbps, which is 1 gigabit per second (Gbps).

Move the correct items from the left column to the column on the right to match the commands to their purpose.

The following commands have the following purposes: ping - tests connectivity to a remote host ipconfig - displays network configuration settings for the local computer nslookup - verifies entries on a DNS server nbtstat - diagnoses problems with NetBIOS name resolution You should understand the purpose of these common troubleshooting tools. You should also familiarize yourself with the proper command syntax for these commands.

Match the connectors on the left to the cable types on the right. Move the correct items from the left column to the column on the right to match the connector with the correct cable type.

The following is the correct matching for connectors and cable types: BNC - coaxial cable SC - fiber optic cable RJ-45 - twisted-pair cable Coaxial cable can also use an F connector. Fiber-optic cable can also use an ST or LC connector. Twisted-pair cable can also use an RJ-11 connector. For twisted-pair cable, an RJ-11 connector is used in telephone deployments, and an RJ-45 connector is used in network deployments.

Beverly has contacted you and stating that her computer will not boot and keeps beeping. Which components must pass a computer's power-on self-test (POST) before an operating system will load?

The hard disk drive The video card The central processing unit (CPU) A computer will not load an operating system if it encounters fatal errors during the POST. A central processing unit (CPU), memory, or video card failure during the POST routine will generate a fatal error and halt the startup process. A hard disk drive and a keyboard are both optional devices for a computer. Many server computers do not have a keyboard for security reasons, and most basic input/output system (BIOS) routines allow the POST to bypass a keyboard error.

A user contacts you stating that his laptop is making a weird buzzing noise. When you examine the laptop, you notice that the buzzing noise is coming from the bottom of the display assembly. Which device should you probably replace?

The hard drive You should probably replace the inverter board in the display assembly. The buzzing noise can be a sign that the inverter board is failing. When the inverter board fails, the image on the screen will be dim or dark, even when you adjust the brightness settings. One good test for video display problems with a laptop is to connect the laptop to an external monitor. If the external display is good, then the internal video card is not the problem. The problem is most likely caused by the inverter or the backlight. The backlight can also be the source of dimming problems. However, when you have problems with the backlight, the dimming occurs gradually. Often, the only way to tell whether the inverter or backlight is the problem is to test the inverter with a multimeter. The inverter is easier to replace than the backlight.

Your laser printer repeatedly prints vertical lines through the page. What is the probable cause of this error?

A warped roller in the paper path

What is the network prefix that is used to denote an unsubnetted Class C IP address?

/24 The network prefix /24 is used to denote an unsubnetted Class C IP address. Class-based IP addresses were the first types of addresses assigned on the Internet. The first octet of a Class A IP address is from 1 through 126 in decimal notation, and the first octet of a Class A IP address is the network address. The first octet of a Class B IP address is from 128 through 191 in decimal notation, and the first two octets of a Class B IP address are the network address. The first octet of a Class C IP address is from 191 through 223, and the first three octets of a Class C IP address are the network address.

You need to set up a network that needs to span multiple buildings. For this reason, you want to use the cabling that supports the longest maximum cable length. Which network topology provides this?

100BaseT

You have several different RAM modules that you can use in a new computer. You need to ensure that the fastest memory is used. Which speed denotes the fastest memory?

60 ns Memory access speed is sometimes expressed in terms of access time. Access time measures, in nanoseconds (ns), the amount of time from when the memory module receives a data request to the time when that data becomes available. The smaller the number, the less time it takes to access data in the memory.

A user has requested to have a printer duplexer added to his printer. Which function is provided by this component?

A printer duplexer, also called a duplexing assembly, provides double-sided printing that usually is purchased as an add-on printer feature. Document sorting is provided by a collator, and document stapling is provided by a stapler. Document sizing is a feature of most printer/copiers that allows you to shrink or enlarge documents.

A user has been issued a printer that uses heat to transfer thermal wax onto paper. Which printer type is this?

A thermal printer uses heat to transfer thermal wax onto paper. The wax is melted onto special thermal paper to create the document. A disadvantage of this type of printer is that the documents cannot be used for long-term archiving because the print tends to disappear.

You are teaching a class for new IT technicians. As part of the unit on central processing units (CPUs), you discuss the architecture used to build CPU sockets. Which architecture should you cover?

ATA Today, CPU sockets are built on the Pin Grid Array (PGA) and Land Grid Array (LGA) architecture. Such CPU sockets can easily be identified by their square shape and white color. A CPU PGA socket is displayed in the image:

Which type of communication is an HDMI port and cable designed to transmit?

Both video and audio A High-Definition Multimedia Interface (HDMI) port and cable is designed to transmit both video and audio over the same cable. There are three main sizes of HDMI ports: regular HDMI, mini-HDMI, and micro-HDMI, as shown in the following exhibit:

A user reports that his dot matrix printer is printing dark and clear on the left side of the paper but that the print is very light on the right side of the paper. What should you do to correct this problem with the printer?

Adjust the transfer roller. If the platen does not hold the paper evenly, the print will appear lighter as you move across the page. Adjusting the platen usually solves the problem.

You work for a company whose network contains several subnets. You move your computer from the Development subnet to the Research subnet, which resides in a different building. You turn on the computer and attempt to connect to a computer named COMP5 on the Development subnet, but you are unable to do so. However, you can connect to all of the other computers on the Research subnet, and other Research computers can connect to COMP5 on the Development subnet. What would explain your computer's communications problem?

An incompatible network protocol listed first in the binding order A computer successfully connects to another computer when it sends data packets that the other computer receives. An incorrect default gateway assignment on your computer will prevent data packets from being routed from the local Research subnet to COMP5 on the remote Development subnet. When data is sent to a remote computer, the data first goes to a router on the local subnet. The router examines the data to determine the destination address, calculates the best path on which to send the data, and sends the data toward the destination. This process fails if the computer has an incorrect default gateway assignment; the default gateway is the IP address of the router that forwards the data.

A customer has a Windows 7 computer with a HD DVD drive. He is asking about DVD compatibility. Which type of disk will he be unable to use in his computer?

Blu-ray disks High-definition DVD (HD DVD) drives can play CD-ROM disks, DVD disks, and HD DVD disks. All HD DVD drives are backwards compatible with CD-ROM and DVD disks.

A user needs to transport a 1,100 MB file. Which media types could be used?

CD CD-RW The DVD+R and Digital Data Storage (DDS)-3 media types could be used to transport a 1,100 MB file. The DVD+R, DVD-R, DVD+RW, and DVD-RW media standards can store up to 4.7 GB on a single optical disk. Double-sided DVDs can store up to 9.4 GB. DVD media are the media type most used to duplicate bootable media. DVD-ROM is the DVD version of the standard CD format and allows up to 16 GB of data. If a DVD recordable disc has the DL designation, it stands for Double Layer. DVD+R DL discs can store up to 8.5 GB.

What are the fallowing cables types maximum distance? Cat5 Cat6 Thinet, Thicknet, Multi mode fiber Single-mode fiber

Cat5 - Up to 100 meters and 100 Mbps Cat6 - Up to 100 meters and 10 Gbps ThinNet - Up to 185 meters and 10 Mbps ThickNet - Up to 500 meters and 10 Mbps Multi-mode fiber - Up to 500 meters and 10 Gbps Single-mode fiber - Up to 40 kilometers and 10 Gbps

You are responsible for performing all routine maintenance on your company's thermal printers. Which of the following is NOT part of routine maintenance for these printers?

Cleaning the heating element Calibrating the printer is not part of routine maintenance for thermal printers. Inkjet and laser printers require calibration to ensure that the print alignment and colors are configured correctly. Routine maintenance of thermal printers includes replacing the paper, cleaning the heating element, and removing debris.

You are nearing the completion of an upgrade that involves implementing a new network infrastructure and upgrading the operating systems running on your network servers. Currently, static IP addresses and HOSTS files are used. The upgrade has included implementing DNS, implementing DHCP, and moving servers and other resources to a new location with new IP addresses. However, you cannot access the resources that were moved using their host names from any of the client workstations. You can access them by their IP addresses. What should you do first?

Configure DHCP to supply a different range of IP addresses to the workstations. You should delete the HOSTS file on each workstation. Workstations read entries in their HOSTS files before making requests to DNS. In this scenario, this behavior would cause the workstation to use the incorrect IP address when attempting to access a server by its host name

You are replacing an old PCI video card in your computer with a new PCI Express video card. You remove the old video card. You insert the new video card into an available slot and reattach all the cables. However, no display is shown when the computer boots. What should you do?

Configure the BIOS. More than likely, you did not seat the video adapter properly when you first installed it. You should first attempt to reseat the video card and reboot the computer. You should not configure the BIOS. Nothing special needs to be done to the BIOS because the old PCI card worked.

George, a user, is having trouble connecting to network resources, including shared folders on the local network and Internet resources. Yesterday, he was able to connect with no problems. You need to ensure that he can connect to these resources. Which tool should you use FIRST?

Control Panel You should first use ipconfig to start the troubleshooting process. Because he could connect to the resources yesterday, it is most likely that the TCP/IP configuration is incorrect. The ipconfig tool will display the TCP/IP settings. Device Manager should be used to view the status and configuration of hardware devices. My Network Places can be used to browse for network resources. In this scenario, you need to discover why the user cannot access resources. Using My Network Places, you would not be able to discover the cause of or fix the problem.

Your computer only boots with a bootable DVD. It is not able to boot without a bootable DVD. What could be the possible reasons for this problem?

Corrupt operating system and Bad hard disk If your computer boots with a bootable DVD but is not able to boot without it, then the problem may be the hard disk or a corrupt operating system. A computer cannot boot without a bootable disk when the disk drive cannot read the boot information successfully. This could be caused by a bad IDE interface or a bad disk.

Susan needs to replace the CPU in her laptop computer. She has asked you for recommendations. What would you recommend she do before she begins the process?

Determine which processors the BIOS will support using the documentation. You should recommend that she use the documentation to determine which processors the BIOS will support. This will ensure that she purchases a CPU that is compatible with her current laptop. It may be necessary to flash the BIOS to support the new CPU.

You need to install a new video card in a Windows XP Professional computer. You need to ensure that the installed technology supports both analog and digital transmissions. Which technology should you install?

Digital Video Interface-I (DVI-I) technology supports both analog and digital transmissions. DVI technology is newer than Video Graphic Array (VGA) technology.

You are troubleshooting a laser printer problem where faint images of previously printed pages are appearing on the current page. Which two components are the most likely cause of this problem?

Discharge lamp Rubber scrape

You have to interconnect a notebook computer and a cell phone. The notebook computer supports Bluetooth, USB, FireWire, and IEEE 1284 connections. However, you do not have any cables to connect the two devices and do not want to purchase any. What should you do?

Enable IEEE 1284 technology on both the computer and the cell phone, and then connect the two. To interconnect a notebook and a cell phone, you should enable Bluetooth technology on both the computer and cell phone and then connect the two. Bluetooth wireless technology can be used to interconnect notebook computers and cell phones for data synchronization

You upgrade memory on a portable computer, but the new memory is not recognized by the computer. What should you do FIRST while troubleshooting this problem?

Ensure that the memory is seated properly. You should first ensure that the memory is seated properly while troubleshooting the problem. If a portable computer does not recognize newly installed memory, you should first ensure that the memory is properly seated in the socket. You should place the module in the socket at a 45-degree angle, slide it into the socket, then press the module down toward the system board until the side clamps latch into place. Most modern portable computers are designed to have a separate memory compartment on the underside. If there is no separate memory compartment, you must ensure that all connectors that were removed to replace the memory chip, such as the touchpad connector or keyboard connector, are properly connected. If you ensure that the memory is seated properly, but the laptop still does not recognize it, you may need to flash the BIOS.

The research department has decided to purchase a new dot matrix printer for department-wide use. Which components are normally found in these printers?

Focusing lens and toner

A user contacts you stating that the print head for her department's dot matrix printer is faulty. Which problems indicate that this is the case?

Faint printouts Partial characters A defective print head can cause a dot matrix printer to print only partial characters, and serious defects can prevent printing completely. Dot matrix printers use an array of pins to strike an inked printer ribbon that generates images on paper. The individual pins in the print head are controlled by electromagnets, which move the pins to form specific characters.

You are setting up a network for a new company. Management is primarily concerned with EMI or signal capture. Which network medium is the least susceptible to these issues?

Fiber optic because fiber optic cables use light pulses rather than electric signals, it is virtually impossible to intercept the signal on a fiber optic cable without interrupting it

What are the two most important factors to consider when selecting a replacement power supply for a desktop computer?

Form factor,Output capacity in watts you should first look for a replacement that fits the form factor of the computer. Power supplies are designed to operate with specific form factors you should first look for a replacement that fits the form factor of the computer. Power supplies are designed to operate with specific form factors

You are responsible for providing printer maintenance for your company's laser printers. A user reports that a printer is having trouble bonding the toner to the paper. During which stage of the laser printing process does this occur?

Fusing Processing - The computer sends the printed document to the printer spooler. The printer spooler contacts the printer. The printer processes the image. Charging - The charge corona (also referred to as the primary corona) applies a uniform charge (typically negative) to the imaging drum. This creates a "blank slate" to which the laser will write. Exposing - The modulated laser beam writes an electrostatic image on the rotating drum. Any areas on the imaging drum that the laser beam touches lose most of their electrostatic charge. This differential in electrostatic charge between the areas of the drum that have been written to and the remainder of the drum allows the image to attract toner in the next phase. Developing - Toner is transferred from the toner cartridge to the imaging drum. The toner cartridge has a metallic roller called a developing cylinder that takes on a charge equal to the imaging drum. The toner sticks to the developing cylinder, and as it rotates toward the paper, a "toner fog" is created as the toner is both attracted to and repelled from the imaging drum. The toner is repelled from areas that were not touched by the laser because they have the same electrostatic charge as the toner and it is attracted to the areas on the drum that were touched by the laser because of the difference in the electrostatic charges. This creates an image that is ready to be transferred to a piece of paper. Transferring - The transfer corona charges the paper so that the toner on the imaging drum is attracted to the paper as the drum rotates and the paper and drum come into very close proximity. A corona discharges the electrostatic charge on the paper immediately after the toner transfers from the imaging drum to the paper, preventing the paper from sticking to the drum. Transfer rollers move the paper through the transferring process. Fusing - The final step permanently bonds the toner to the paper. A fusing roller, heated by a quartz lamp, melts the toner to the paper, and the paper exits the printer. Cleaning - A rubber cleaning blade removes any toner left on the imaging drum and deposits it into a waste bin, and a discharge lamp neutralizes the charge on the drum.

While performing routine maintenance for a customer, you hear a grinding noise coming from inside the computer case. Which component should you suggest the customer replace?

Hard drive The hard drive should be replaced as soon as possible. Grinding or clicking noises coming from inside a computer case are usually the result of physical problems with a hard drive

Your company's mobile sales force is complaining about how slow their laptops are. You are considering replacing the mechanical hard drives in their laptops with solid state drives (SSD). This will provide an increase in performance, but you are concerned about the SSD's limited storage capacity. What type of SSD should you consider?

Hybrid drives You should consider hybrid drives, which have both SSD and mechanical hard drives. Hybrid drives store the operating system, applications and system files on the SSD side, and use the mechanical hard drive for long-term storage. This type of drive will provide the users with a performance boost while still maintaining the storage capacity of mechanical drives.

An instructor is explaining a technology that allows a central processing unit (CPU) to execute two separate instructions concurrently. Which technology provides this functionality?

Hyper-threading Hyper-Threading (HT) technology allows a CPU to execute multiple instructions at the same time. This option is enabled by default. You can disable or enable Hyper-threading from the system basic input/output system (BIOS) setup program.

You are helping students install Windows and Linux servers in various configurations on their laptops. What would be the most important CPU or motherboard feature to configure?

Hyperthreading Virtual technology would be the most important CPU or motherboard feature to configure. Virtual technology allows you to install another operating system on top of the existing operating system without overwriting the original OS. You install a hypervisor, such as Oracle Virtual Box or VMware's VM Player, and then install the desired operating system within the hypervisor. In essence, the newly installed operating system launches like an application, but has the same functionality as an operating system that was installed directly on the host system. Virtualization technology is typically disabled in the BIOS. To enable the virtualization feature, go into the BIOS menu, look for Intel Virtualization Technology or AMD-V, and enable it.

From your computer, you can contact all servers and workstations on your own network segment, but you are unable to gain access to network resources on other segments. Which factors should you investigate?

IP address conflicts, The routers

You are responsible for managing your research department's network. This network uses RG6 coaxial cabling. Which of the following statements is TRUE regarding this network?

Its signal quality is not as good as that of RG59 coaxial cable. RG6 cable should be used in situations that require the 50 MHz frequencies or higher. RG6 signal quality is better than the signal quality of RG59 cable. RG6 cable has a foil shield. RG59 cable should be used in situations that require lower frequencies than 50 MHz. RG59 is thinner than RG6 cable. RG59 does not have a foil shield. For both of these cable types, the maximum cable length is 185 meters, and the maximum transmission speed is 10 Megabits per second (Mbps).

You are providing consulting services for a client who plans to purchase a large number of printers that can print multipart forms. Which printer type should you advise him to consider?

Laser Dot matrix printers can print multipart forms, often referred to as carbon copies, because the act of printing is accomplished by physically striking paper with a print head. Another impact printer, the daisy-wheel printer, can also be used for multipart forms. Inkjet, thermal, and laser printers cannot print on all layers of a multi-part form. A multi-part form has two or more sheets of paper per page, and only an impact printer can create an impression on the pages under the top page.

Match each printer quality on the left with the printer it describes. Each quality will only match to a single printer type, and each printer type will only have a single quality.

Laser - Duplexing assembly Inkjet - Ink cartridge Thermal - Heating element Impact - Ribbon Virtual - Print to file

What are the maintenance tasks for each printer type

Laser - Replace toner Inkjet - Clean heads Thermal - Clean heating element Impact - Replace ribbon

Which applications use UDP?

NFS, FTP, TFTP User Datagram Protocol (UDP) provides two services that Internet Protocol (IP) does not: a port number to help distinguish different user requests and, optionally, a checksum capability to verify that the data arrived intact. UDP works at the Transport layer of the OSI model.

Which printer upgrade option allows a printer to act as a standalone printer on a network?

NIC Some printers allow you to install a network interface card (NIC) so that the printer can act as a standalone printer on a network. This allows you to attach the computer directly to the network as you would any other device.

You were recently given an old notebook computer that is missing most of its peripherals and accessories. Which accessory or peripheral will you most likely have to obtain directly from the notebook manufacturer because of its highly proprietary nature?

Network card the location of the connectors is specific to the laptop model.

A user reports that his Windows computer often issues errors about running out of virtual memory. You want to increase the amount of available virtual memory.

Open the case and verify the type of RAM installed. You should edit the size of the paging file in the operating system. In many Windows versions, you can accomplish this by clicking the Settings button in the Performance section of the System Properties dialog box's Advanced tab.

You need to configure a removable storage device so the device can be removed without using the Safely Remove Hardware application. What should you do?

Optimize for quick removal .When you remove a hot-pluggable device from a running computer without using the Safely Remove Hardware application, it is referred to as a surprise removal because the operating system is not notified of the removal in advance. You should not remove external storage devices on which write caching is enabled because it might cause data loss or corruption. To prevent data loss or corruption while removing an external storage device from a computer, you should configure the Optimize for quick removal option for the storage device. This option disables write caching on the storage device and in Windows. To configure this option, open Device Manager and click the Policies tab on the property sheet for the removable storage device. Selecting the Optimize for quick removal option allows you to remove the device without using the Safely Remove Hardware application.

You work the service desk at a manufacturing firm that has several different types of printers. An employee who runs one of the 3D printers calls to say she can no longer print. What should you most likely bring to her workstation to get her up and running?

Plastic filament

A user notifies you that the monitor on her notebook computer is not displaying anything. What should you do FIRST?

Plug in an external monitor to test the external output. You should use the Fn key to toggle to the internal video display. The Fn key used with the F4 key switches the video display between the laptop monitor only, the external monitor only, or both on at once. Users often accidentally hit this key function, and thereby prevent the internal monitor from displaying any image.

A user complains that his monitor is not working. You must diagnose the problem to return the monitor to normal operation. What are the four primary sources of display problems?

Power supply , video cable, Video adapter card, monitor

You have finished preparing a user guide containing password reset instructions for your users. Rather than printing out a hard copy, you are going make it available in an online repository. Users will be reading the document on Windows, Android, and Apple devices. Which virtual print technology would be the most restrictive and be the least compatible with users' devices?

Print to PDF Print to XPS would be the most restrictive format. XPS is a file format created by Microsoft as their own version of a PDF file. In its XPS state, the document would only be available to Windows users, and only to those users who have an XPS viewer installed.

A new computer has been purchased that includes an integrated GPU. What is the primary purpose of this component?

Processing video and graphics The primary purpose of an integrated Graphics Processing Unit (GPU) is processing video and graphics. None of the other statements describes the primary purpose of a GPU. A paging file provides additional memory capabilities. A video capture card provides video capture capability.

A user contacts you about a problem with his notebook computer. The battery for her notebook computer will no longer hold a charge. She removed the battery, but the computer will not work when plugged into the AC outlet. A new battery is on order but will not arrive until next week. The user needs the computer to be operational for a meeting tomorrow. You want to provide the easiest method to restore operation. What should you instruct her to do?

Re-insert the depleted battery in the computer, and then boot the computer. You should instruct the user to re-insert the depleted battery in the computer and then boot the computer. Some notebook computers require that the battery remain in place, even if it is depleted, to complete the electrical charge. This often occurs when you overcharge the battery by plugging it into the wall for too long.

What piece of equipment would help transmit an Ethernet signal to the far end of a hotel that is 400 meters (m) long?

Repeaters A repeater takes a weak signal, amplifies it, and transmits the amplified signal. In wired networks, repeaters can be used to extend the segment distance beyond the100-m limitation of twisted-pair cable

You are a desktop administrator for Nutex Corporation. Your organization uses Ethernet cable to connect network resources. A user reports that she is unable to access network resources on her portable computer. The portable computer is connected to the company's network using an Ethernet cable. When you test the cable using a time-domain reflectometer (TDR), the signal returns too early. What should you do?

Replace the network adapter. You should replace the network cable. As stated in the scenario, the TDR shows that signal returns too early, which implies that there is a breakage in the network cable. Therefore, you should replace the cable to fix the problem.

You are a desktop engineer for Verigon Corporation. Gloria requires a PCI network interface card and a PCI sound card installed in her computer. Her computer has three PCI slots, two of which contain the video card and the modem, respectively. Which card should you use to attach both the PCI network interface card and sound card to the computer?

Riser card You should use a riser card to attach both the PCI network interface card and the sound card to the computer. A riser card is an expansion card that can be directly connected to the motherboard on a PCI or ISA slot. Riser cards have several slots to hold additional cards, such as PCI or ISA, that work in parallel with the motherboard. A riser card is commonly used in Low Profile Extended (LPX) and New Low Profile Extended (NLX) computers because these form factors are for slim-line cases.

You replace a black ink cartridge in your inkjet printer, and now the printouts consist of jagged lines and characters. What is the first action you should take to resolve the problem?

Run a printer diagnostics program. After you install a new printer cartridge in an inkjet printer, you should run the printer alignment program to align the inkjet print heads. This should allow the printer to produce clearer outpu

In the past year, several hard drives in your company's computers failed without warning. All of the failed drives were replaced, but management is concerned that this will become an increasing problem because of the number of older computers in use. They have asked you to implement a technology that detects failing hard drives by analyzing the hard drive and providing a warning of impending failure. Which technology should you implement?

S.M.A.R.T. Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) is a technology that detects failing hard drives through analyzing the hard drive. It provides a warning of impending hard drive failure. If a S.M.A.R.T. error is reported when the computer boots, the hard drive is failing.

You have been asked to upgrade the hard drives in several legacy computers. Management wants you to upgrade them to the hard drive specification that has the fastest theoretical bus speed. Of the options given, which hard drive specification should you implement?

SATA 3 Serial Advanced Technology Attachment (SATA) 3 is capable of approximately 6.0 gigabits per second. SATA 2 is capable of approximately 300 megabytes per second (MBps).

Your organization is encouraging all users that have been issued corporately owned iPhones to put the phones in Airplane Mode when the battery is running low. Which of the following is NOT disabled when an iPhone is placed in Airplane Mode?

Siri Siri is not disabled when an iPhone is placed in Airplane Mode. However, it may be difficult to take advantage of Siri when in Airplane Mode because none of the wireless services can be used.

Your organization is replacing all of its mobile devices and issuing Windows 10 laptops. The organization wants everyone to use the touchpad as opposed to a mouse. You must provide some training on how to properly use the touchpad. In the training memo, which touchpad gesture would you demonstrate that replicates right-clicking a mouse?

Tap the touchpad with two fingers. You would instruct the user to tap the touchpad with two fingers. This action brings up the menu of additional commands that is displayed when the user right-clicks a mouse.

Which improvements does IPv6 provide over the current IP addressing scheme?

The IP header options allow more efficient forwarding and less rigid length limits. The IP address size is increased from 64 bits to 128 bits with simpler auto-configuration of addresses.

Match the IPv6 addresses on the left with the IPv6 address type to which each belongs. Each address will only match to a single address type, and each address type will only have a single address.

The IPv6 address types should be matched with the given IPv6 addresses as follows: APIPA - fe80::/10 Private - fc00::/7 Loopback - ::1/128

An instructor is describing a component that is always located on the CPU and accelerates the processing of instructions. Which component is being discussed?

The L1 cache The central processing unit (CPU) uses cache memory to accelerate the processing of instructions and data. CPUs have contained cache memory as part of the chip architecture since the introduction of the 486; this cache memory is known as Level 1 (L1) cache, or internal cache. The amount of L1 cache is fixed because it is located on the processor itself. The L1 cache operates at the same speed as the processor. Some processors have two L1 caches; one cache stores instructions, and the other cache stores data.

Your computer has been operating without problems for some time, but on your most recent startup, nothing appears on the monitor screen. The lights for the keyboard, floppy drive, and hard disk flash at startup. Your computer has an American Megatrends, Inc. (AMI) BIOS program, and the computer generates one long beep followed by eight short beeps at startup. Which item is most likely to be defective?

The central processing unit (CPU) The beep code generated by the power-on self-test (POST) in this situation indicates a missing or defective video card. First, you should reseat the video card. If you continue to receive the error, then you should replace the video card. If the card is internal to the computer's system board, then the system board may need replacement.

Match the frequency and speed characteristics on the left to the wireless specification on the right. Move the correct items from the left column to the column on the right to match the characteristics with the correct specification.

The characteristics match with the 802.11 specifications as follows: 802.11a - 5 GHz, up to 54 Mbps 802.11b - 2.4 GHz, up to 11 Mbps 802.11g - 2.4 GHz, up to 54 Mbps 802.11n - 2.4 or 5 GHz, up to 600 Mbps 802.11g devices are backwards compatible with 802.11b devices.

You use a computer named Wkst1 on a TCP/IP network, which is installed with an application that uses UDP to send a file from your computer to a computer named Wkst2. Data collisions occur, and several data packets are lost during transmission. What will most likely occur as a result of losing the packets during transmission?

The protocol will automatically retransmit the packets. User Datagram Protocol (UDP) is a connectionless protocol; thus, it will drop the packets and will not automatically retransmit them. Because an application is not typically responsible for transmitting data packets across a network, the application in this scenario cannot drop the packets. Instead, an application that uses UDP will usually detect that UDP has dropped packets, and the application will retransmit any dropped packets.

A client, Warren, reports CMOS mismatch errors at startup. Further conversation with Warren reveals that he had forgotten the startup password he assigned in CMOS, and he had to clear all CMOS settings for his computer to complete a successful startup. Although he can now start his computer, he continues to observe CMOS errors each time he starts the computer. He replaced the CMOS battery, but the problem continues. Which component should you investigate first to resolve the problem?

The system board jumper settings You should first investigate the system board's jumper settings, specifically the jumper that is used to clear the complementary metal-oxide semiconductor (CMOS) settings. A common method for clearing CMOS settings, including the startup password, is to use a jumper on the system board that is specifically designed for clearing CMOS settings.

Your company has decided to make several computers that will be used for specialized functions. You have been tasked with assembling these computers. Management wants you to ensure that the computers will not experience any overheating issues. Which components are used to help with this?

Thermal compound, Heat sink When installing processors, thermal compound, a heat sink, and a fan are used to help with overheating issues. If the processor is overheating, the computer will shut down after being on for a while

If you were explaining to your company's IT personnel the difference between their old hard drive technology and newer solid state drives, which statement would be FALSE?

They are not as fragile as magnetic hard drives. Solid state drives or SSD do NOT use a read/write assembly. A solid state drive does not have any moving parts. They are not as fragile as magnetic hard drives because they do not have any moving parts and are resistant to shock. When in operation, solid state drives are silent. Solid state drives are faster, more reliable, and require less power than magnetic drives.

Why should you go through the trouble of finding new slot covers and installing them on the unused slots?

To keep air circulating properly inside the computer case To keep foreign objects out of the case

Why would you implement a KVM switch?

To segment a network You would implement a KVM switch to reduce device needs in a data center.

Jacob is new to your department and must be taught how to remove and install RAM into laptops. Which steps would you recommend he do BEFORE he performs this task?

Turn off the laptop and remove all power sources, including the battery and power cord. Put on an antistatic wristband. Diagram the placement of screws, then remove and set aside all screws. Replace the RAM. Replace the screws. Replace the power sources.

You need to synchronize your mobile device data with your desktop computer. For security reasons, your organization prohibits syncing devices over wireless connections or the Internet. Which connection(s) could you use to perform the synchronization?

USB You could use a USB connection to perform the synchronization. This will attach the mobile device directly to the desktop computer.

You need to remove several devices from a computer. For which type of device should you use the Safely Remove Hardware icon to stop the device's operation before removing it from the computer?

USB flash drive You should use the Safely Remove Hardware icon to stop a USB flash drive before removing the drive from the computer. USB flash drives are hot-swappable. However, if you remove the drive from the computer without using the Safely Remove Hardware utility, you may interrupt the write operation. They may also be referred to as compact flash drives.

Jane is responsible for making sure her team has all the items it needs when traveling for business. One of her users has a laptop with no active Ethernet port. Which accessory should she purchase for that team member?

USB-to-RJ-45 dongle She should purchase a USB-to-RJ-45 dongle. The RJ-45 connection is an Ethernet connection. The dongle is an accessory or adaptor that allows users to convert a USB port on a laptop to an Ethernet port. It will allow her to plug a standard RJ-45 cable into the port. It can also be useful to have as a backup if the onboard connector becomes inoperable.

Which of the following is NOT an Internet appliance?

UTM Internet appliances, according to the CompTIA A+ exam guide, include UTM, IDS, and IPS devices. Unified Threat Management (UTM) devices are Internet appliances. They provide a single point on the network from which multiple security functions are managed. This single point of presence is in contrast to several independent software and devices, such as antivirus, antispam, firewall, IDS, and IPS.

George, a user, receives a blue screen error when attempting to access a third-party application on his computer. When you are troubleshooting the computer, you get a blue screen error that lists the same memory location for the error. What should you do?

Uninstall and reinstall the applications. You should replace the defective memory module. If you get two blue screen errors that list the same memory location, the most likely cause is a defective memory module.

Christine has a motherboard with a Socket 1156 and has called you to see if a Socket 1150 CPU could be used in its place. What would you recommend that she do?

Upgrade the socket on the existing motherboard so it compatible with an LGA 1156.

You have determined that several computers on your company's network need to have the BIOS updated. Which of the following changes to your computer would MOST likely require that you flash a computer's BIOS afterward?

Upgrading the CPU Most modern computers make use of a technology known as flash read-only memory (ROM) or flash basic input/output system (BIOS) that allows code in a computer's core chips (firmware) to be updated by software that is available through the BIOS manufacturer or system board manufacturer. You may need to flash a computer's BIOS after you integrate certain types of technological enhancements, such as a central processing unit (CPU) with a new instruction set

Your laptop computer, which typically draws 2 amperes (amps) under normal usage, has a rechargeable nickel-cadmium (NiCad) battery that provides 150 minutes of battery power. Lately, the laptop runs out of power after only 30 minutes of use. Which actions should you take to extend the time your computer can operate on battery power?

Use a charging device with a higher output voltage. Clean the battery terminals You should clean the battery contact terminals, then completely discharge and recharge the battery several times. Contacts can develop a resistive film that prevents the battery from being fully charged and reduces the voltage available to the computer.

You have a single switch, and you need to separate the network traffic for the Marketing and Accounting departments. What would be the easiest way to accomplish this?

VLAN A virtual LAN (VLAN) allows you to segregate network traffic based on the switch port connections. As an example, if computers in the Marketing department are connected to ports 3, 6, 12 and 14, those ports can be assigned to VLAN100. If computers in the Accounting department are connected to ports 4, 15, 17, and 20, they can be assigned to VLAN200. In this configuration, computers on VLAN100 would be segregated from computers on VLAN200. VLAN assignments can span multiple switches, but each switch port can only belong to one VLAN. By default, all switch ports are assigned to VLAN1.

You have a color laser printer that is connected through the network and is managed by a Windows Server 2008 print server. A user has requested that he be allowed to print to the color laser printer. You need to create a permanent connection to the printer. During printer setup at the user's computer, which factors can you use to connect to the printer?

You can use the IP address or host name to connect to the printer. The host name should be in the \\server_name\\printer_name format. You should not use the MAC address or NetBIOS name to connect to the printer. Windows Server 2008 does not communicate using NetBIOS names. In addition, MAC addresses are used only by some network devices and are not used for connecting one node to another.

You have a bootable DVD that includes virus-scanning software. However, when you insert the DVD into a computer's DVD drive and reboot the computer, the computer still boots normally. What is the problem?

You need to change the BIOS boot order. You need to change the BIOS boot order. The computer will not boot using the bootable CD because the hard drive has a higher boot priority than the DVD drive. This can also be a problem if you try to boot using a floppy disk.

You need to configure your Android phone so that you can receive your Yahoo email on the device. What information would you need to provide?

device's IP address, password, IMAP server mail.yahoo.com, SMTP server smtp.mail.yahoo.com If you need to configure your Android phone so that you can receive your Yahoo email on the device, you would you need to provide an email address and password, set the IMAP server to mail.yahoo.com, and set the SMTP server to smtp.mail.yahoo.com.

You work in a customer call center. Martin is on the phone asking about the difference between solid-state drives (SSDs), hybrids, and magnetic hard drives for his laptop. He is only going to be web surfing, emailing, and creating documents. Which hard drive would provide the best performance and reliability?

eSata external drive A solid-state drive (SSD) is the best option for Martin's needs because it has no moving parts. These drives are not as fragile as magnetic hard drives because they do not use a read/write assembly, they do not have any moving parts, and they are resistant to shock. When in operation, SSDs are silent. Solid-state drives are faster, more reliable, and require less power than magnetic drives. Contrarily, SSDs have limited storage space compared with traditional hard drives.

You suspect that a hacker has compromised a computer using one of its open ports. Which command would allow you to view the open ports on the computer?

net use

You are responsible for managing a host computer that hosts several Windows 8.1 virtual computers. You need to install the latest patches for the operating system. Where should you install the patches?

on both the host computer and all Window 8.1 virtual computers