D316 - Comptia Practice tests set 4

A technician is troubleshooting a computer with a user's complaint that the device has no power. To isolate the cause for the issue, what tests can the technician conduct on the computer?

-Disconnect extra devices. -Plug in a known-good basic electrical equipment, such as a lamp into the wall socket. -Check that other equipment in the area is working.

A Windows administrator had to troubleshoot a virtual and physical server due to issues during boot. The resolution was to repair the master boot record (MBR) on one server and repair the extensible firmware interface (EFI) bootloader on the other server. What clues did the administrator notice that resulted in these previously mentioned actions?

-The VM console desktop displayed "Boot device not found." -The computer monitor stated, "OS not found."

What characteristics of Wi-Fi 6 (802.11ax) allow for increased bandwidth and support for modern networks?

-Uplink and downlink MU-MIMO -Orthogonal frequency division multiple access -Designed to work in both the 2.4 GHz and 5 GHz bands

SMART

-can alert the operating system when detecting a failure. In addition, it includes various tests that can detect whether there is any damage to the device's storage mechanisms. -can run advanced diagnostic tests to check on performance issues that extend read or write times. -does not have data recovery options. However, the SMART test can inform an administrator when it is time to try recovery options before a complete disk failure occurs.

A network engineer completes a site survey in an office for wireless connectivity. Given that the signal needs to get through several walls, what wireless frequency band would best suit the engineers' needs?

2.4GHz

OLED

A separate LED generates each pixel in an organic LED (OLED) display, or technically, an advanced matrix OLED (AMOLED) display.

A user has intermittent problems with a program, and the technician has determined two courses of action. The first solution would take several hours of work and may resolve the problem. The second solution is to reimage the computer. What is the best solution?

After backing up the data, reimage the computer.

A support desk technician must make a custom-length Ethernet patch cable for a user's desk setup. What tool do they need to create this cable?

Cable stripper, crimper, and snips

A desktop support technician recently installed two new hard drive disks (HDDs) into an office workstation, and the HDDs will represent the D: and E: drive in the Windows operating system (OS). However, only the D: drive is available in the file explorer. How can desktop support effectively troubleshoot this issue before making drastic changes?

Check Windows Disk Management

A user reported not seeing the new drive (or D: drive) that desktop support installed the previous workday. However, system applications are running as expected. How would support go about troubleshooting this issue to regain access to the new drive?

Check data cable to disk. Initialize the disk.

If the desktop computer has a blank screen after powering on, what can a user do to troubleshoot the issue?

Check for faulty interfaces. Check internal cabling.

A network administrator is looking at a user's box which seems to have intermittent connectivity issues. Which of the following should they do first?

Check the physical cords

A user complains that their monitor keeps flickering. What is the first thing to check?

Connectors

Which of the following signs would indicate an overworked hard drive disk (HDD) due to insufficient system random access memory (RAM)?

Constant LED activity

A network administrator noticed that latency has been higher than their service-level agreement (SLA) covers for quite some time. What should they do?

Contact the ISP

If a legacy IBM computer was experiencing some heating that affected the memory controller, what beep code would a computer technician hear?

Continuous beep

What is the most up-to-date DDR RAM version that will support non-ECC and ECC types?

DDR5

A network engineer gets a report that a growing number of wireless devices cannot obtain an IP address from the Wi-Fi network. They can see the network name (SSID) and authentication is successful, but devices say that they cannot obtain an address. What is most likely the problem?

DHCP has no more addresses available.

A user complains the cursor on their laptop jumps around on its own. This is especially bad while they are typing. What could solve this problem?

Disable the touchpad. Configure input options.

How would desktop support personnel determine if a hard disk drive (HDD) suffers from a mechanical issue?

Disk platters are grinding. Clicking noises

What does constant light-emitting diode (LED) activity on a hard drive disk (HDD) indicate?

Disk thrashing Low system memory

What options are available when using Self-Monitoring, Analysis, and Reporting Technology (SMART)?

Drive self-test (short) Confidence test Read test

There are strict requirements for signal strength to minimize interference in the unlicensed long-range fixed wireless spectrum. What are the main components of these requirements?

Effective isotropic radiated power Antenna gain Transmit power

Which of the following causes the ink in an inkjet printer to break up into small pumps, which give an electrical charge when they leave the print head and can either stick to the paper or fall off?

Epson design

A user powers on a legacy IBM desktop computer, but it displays a blank screen, with a repeating set of short beeping sounds coming from the chassis. What can tech support do to troubleshoot this issue?

Examine the power supply.

What issue is occurring when there is no light-emitting diode (LED) lit on a hard drive disk (HDD)?

Faulty disk

What are the causes of the error message, "Boot device not found"?

Faulty disk File corruption

The desktop computer cannot find a bootable disk. What may be wrong with the hard drive disk (HDD)?

File corruption Faulty disk

What features of the cloud allow multiple users to simultaneously access content and work collaboratively while tracking edits by each user?

File synchronization

A technician researches flat-screen displays to find the perfect model for a conference room. The screen should feature a high viewing angle as the conference room is wide. Which technology does the technician look for when purchasing a flat-screen display?

IPS

AC adapters can get mixed up

If an underpowered adapter is used, the laptop will display a warning at boot. Using the wrong adapter can cause problems, such as the battery not completely charging. -As batteries age, they no longer hold a charge and need to be replaced. This would be the best answer except that the boot error points to another problem.

A technician is troubleshooting a computer and discovers that the RTC battery on the motherboard is failing. As a result of the battery failing, what is occurring with the computer?

Inaccurate system date/time

If a system overheats from time to time, what symptoms would a user notice when using the affected desktop computer?

Intermittent shutdown Unusual odor Blank screen

A computer specialist starts a computer that has received a trouble ticket for not working correctly. Upon starting the computer, the technician hears two short beeps. Regarding beep codes, what does this beep sequence signify as an issue?

It represents that a power-on self-test (POST) error has occurred.

Hearing three long beeps when powering on a legacy IBM desktop computer will indicate which of the following issues is occurring on the computer?

Keyboard issue

An IT support specialist updated all the information systems in the office last week and the users are complaining that the routinely used applications no longer work. What is most likely the issue breaking the applications?

Legacy software/OS

What are possible computer issues that could lead to sluggish performance?

Low storage IOPS Half-duplex network setting Over-utilized CPU

A company is building a new office space and data center. They would like network segmentation to ensure that only certain servers and workstations can access sensitive data. What type of devices will be the foundation of that type of network?

Managed switches

A cyber technician is cleaning a team computer and observes that damage has occurred to the motherboard circuitry. What is the most common cause for this type of damage?

Overheating

What uses a method of down-plugging, where a longer card can fit into a short slot, assuming other features do not obstruct the card in the case?

PCIe

Wireless NIC slot

PCIe x1

Video Card slot

PCIe x16

When using a legacy IBM desktop computer, hearing two short beeps would indicate the computer is experiencing what sort of issue?

POST error

A new IT support technician troubleshoots a user's report of intermittent network connectivity. After inspecting the workstation, they see a label above the station's RJ-45 port wall connection. This label is likely to identify what device?

Patch panel

Loop back plug

Pins 1-3 and 2-6

A technician is using a printer that has text-to-raster conversion. Which of the following is this?

PostScript

A user contacts a cellular service tech support team. The complaint is that no voice services are working. What is the likely issue?

Preferred roaming list

A startup company does not have the capital to invest in infrastructure to host their website, nor do they have the capital to hire engineers to manage their cloud environment. At this point, strict access control is not a concern for the startup, but they do not want to share resources with other organizations. Which cloud implementation will best suit the startup's needs?

Public cloud -Private cloud is unnecessary for the startup's use case because they do not require strict access control in their operations.

The desktop technician could not use an entry-level redundant array of independent disks (RAID) controller within a brand-new office workstation to improve data protection due to it not supporting which of the following RAID types?v

RAID 5 and RAID 10

Which redundant array of independent disks (RAID) volume type would continue to run even after a single disk failure?

RAID 6 RAID 5 RAID 1

How can a support technician recover data from a single disk failure in a redundant array of independent disks (RAID) 6 volume?

Rebuild array with disk replacement.

A technician works on a faulty unit and needs to remove and replace a power supply unit (PSU) without opening the case and without the server losing power. What is this configuration?

Redundant power supply

What beep codes would a computer technician hear if a legacy IBM desktop computer is experiencing a motherboard issue?

Repeating short beeps no beep

A user complains that a laptop is slow. A technician concludes that the best solution is to remove the current mechanical disk drive with a faster solid-state drive. The technician opts to back up the user data and install a fresh operating system on a new drive. Which approach defines the technician's steps?

Replacement

A 5-year-old office workstation slowly loads the Windows operating system (OS). The computer user had mentioned waiting 10 minutes in one case before the desktop screen was viewable. Suspecting an issue with the hard drive disk (HDD), what symptoms would explain the type of behavior the user is witnessing on the workstation?

SMART has detected a failure. HDD is taking too long to read data.

A technician needs a cable for 10G Ethernet and higher within a data center network. What type of cable does the technician need?

STP

There are varying specifications for Wi-Fi.

Since the Wi-Fi is receiving a signal, the Wi-Fi card is compatible with the company's Wi-Fi system

Devices within a computer require software drivers to function.

Since the system identified the card properly, then the support technician installed the correct drivers.

What are the main components of authentication, authorization, and accounting that securely and adequately connect devices to a network?

Supplicant AAA server Network access server/point

What options are available on the blue screen of death (BSOD) to help troubleshoot issues to reduce the chance of data loss or corruption?

Support URL link QR code Stop code

Regarding a personal computer, what houses internal components or provides input/output functions, or external storage?

System case Peripheral device

This can be used individually or in conjunction with other configurations to effectively verify email services and block the transmission of spoofed and unwanted messages.

The Sender Policy Framework (SPF) record—there must be only one per domain—identifies the hosts authorized to send email from that domain. DomainKeys Identified Mail (DKIM) uses cryptography to validate the source server for a given email message. This can replace or supplement SPF. The Domain-based Message Authentication, Reporting, and Conformance (DMARC) framework ensures that the developer effectively utilizes SPF and DKIM. A DMARC policy publishes as a domain name system (DNS) TXT record.

A system administrator is deploying a physical server with two redundant array of independent disks (RAID) disk groups. The first is a RAID 0 volume containing two hard drive disks (HDDs) and hosts the Windows Server operating system (OS). The second is a RAID 5 volume containing four HDDs that will only hold data storage. After rebooting the server, the administrator sees a message on the screen stating, "OS not found." All HDDs are actively running. Why is the OS not loading after the reboot?

The bootable device cannot be found. The second volume is booting first. The first volume may be corrupted.

A technician is working on a computer and smells something burning. What concern should the technician have in regards to the burning smell?

The computer is overheating and putting the circuitry and motherboard at risk for damage.

The enterprise monitoring software for desktop computers in the office reported a "pre-failure" disk alert and high read times for a specific office computer. What symptoms could the desktop user describe to confirm the monitoring alerts?

There is a SMART alert notification. The operating system loads very slowly.

A cyber technician is cleaning a team computer and observes that the computer is showing signs of overheating. What does the technician observe to conclude that the computer is overheating?

There is damage to the circuitry of the computer.

A service technician is running diagnostics on a corporate asset and hears a grinding noise coming from within the desktop. What type of issue represents a grinding noise?

This issue demonstrates that a mechanical problem has occurred.

strict requirements for signal strength to minimize interference in the unlicensed long-range fixed wireless spectrum

Transmit power is the fundamental strength of the radio, measured in dBm (decibel-milliwatts). Regulatory requirements limit the power output to minimize the potential for conflicts. Antenna gain is the amount that a signal boosts by directionality—focusing the signal in a single direction rather than spreading it over a wide area. A technician would measure gain in decibels isotropic (dBi). Effective isotropic radiated power (EIRP) is signal strength from a transmitter, measured as the sum of transmit power, antenna cable/connector loss, and antenna gain, expressed in dBm (decibel-milliwatts).

A user complains that their laptop does not hold a charge for more than 30 minutes, even after charging all night. They also mention that there is an error message when they restart their computer that states something about power. What is likely the problem?

Underpowered adapter

A user reported some missing files on the desktop computer. A desktop technician did a disk diagnostic and found some bad blocks. This may also be causing some files not to open properly. What option does the desktop technician have to help the user gain access to these missing files again?

Use a recovery utility.

What are the manufacturers' specific recommendations for cleaning and maintaining laser printers?

Use a toner-safe vacuum. Wipe with a soft cloth.

802.3af

allows powered devices to draw up to about 13 W. Power is supplied as 350mA@48V and limited to 15.4 W, but the voltage drop over the maximum 100 feet of cable results in usable power of around 13 W.

802.3at (PoE+)

allows powered devices to draw up to about 25 W, with a maximum current of 600 mA.

A helpdesk technician evaluates a ticketed computer and, during the troubleshooting protocols, identifies an issue around disk/file corruption problems. Based on the disk/file corruption problems, what issue is occurring?

application crashes

LED

can provide illumination in a flat panel. Most smartphone and tablet screens use edge lighting where the LEDs are at the top or bottom of the screen.

A missing drive in a Windows operating system (OS), for example

can still indicate a misconfiguration of the disk and not necessarily an issue with the disk itself.

Infrastructure mode

connects the printer to an access point to make it available to clients on the network via an IP address.

Page Description Language (PDL)

creates a raster file from the print commands sent by the software application. A raster file is a dot-by-dot description of where the printer should place ink.

Motherboard components (including hardware and software)

include the CPU socket, CMOS, northbridge, and firmware

Double/echo images

is a sign that the photosensitive drum has not been cleaned properly. Try printing a series of different images, and see if the problem resolves itself. If not, replace the drum/toner cartridge.

Detecting burning smells

is associated with hardware failure versus no power issues.

A printer control language (PCL)

is more closely tied to individual features of printer models and can introduce some variation in output depending on the print device.

Cloning a disk

is similar to migration in that it makes a copy of an entire drive to another storage device.

UTP

is the most popular type of network cable because of the copper wire construction. The electrical signals sent over each pair are balanced.

When installing a WiFi card

it is important to remember to connect the antenna. The connection is usually a wire with a terminating end that snaps onto the card.

A failing fixed disk and file corruption

may cause a particularly severe read/write failure, resulting in a system stop error (a crash screen).

A failing fixed disk and file corruption on a Windows computer

may cause a system stop error or crash screen known as the blue screen of death (BSOD). There is less disk activity in a BSOD state.

A software technician is conducting a help desk procedure with a correctly attached power supply, and the computer fans are running, yet the screen remains blank. What is likely causing the screen to remain blank?

A faulty display POST procedure not executing

What are the benefits to a hard drive disk (HDD) Self-Monitoring, Analysis, and Reporting Technology (SMART) feature?

Check performance issues. Check for physical damage.

What insight can the input/output per second (IOPS) statistic on a hard drive disk (HDD) provide to desktop technicians when troubleshooting issues?

Overall disk performance

A support technician replaces a Wi-Fi card in a laptop. The following day, the laptop user states that the company's Wi-Fi network signal is weaker than it was before. What does the technician find to be the likely problem?

The antenna is not connected

The redundant array of independent disks (RAID) 0 volume reports a disk failure in a disk group of only two hard drive disks (HDDs). How would a desktop technician recover data in this case?

The data is unrecoverable.

Constant disk activity, often referred to as disk thrashing

means the disk is being constantly read. This constant activity may be a result of malware on the computer.

Migration

means using backup software to create an image of the old drive and storing it on a USB or other type of media.

Replacement drive approach

only has the data backed up from the old drive. The technician then fits the new drive to the laptop and reinstalls all software. Then the technician can restore user data from the backup.

802.3bt (PoE++ or 4PPoE)

supplies up to about 51 W (Type 3) or 73 W (Type 4) usable power.

Constant activity, often referred to as disk thrashing, can signify

that there is not enough system RAM so that paging (virtual memory) is continually using the disk. It could also be a sign of a faulty software process.

Constant disk activity can signify

that there is not enough system random access memory (RAM), so paging (virtual memory) is continually using the disk.

If LED Lights are not flashing

the HDD is not powered on or may have failed.

Epson design

the nozzle contains a piezoelectric element, which changes shape when a voltage is applied. The steady stream is the ink sent through the print head, and the ink that falls off is recycled.

Wire should be no more than .5 inches

to reduce the risk of interference

IPS

uses crystals that rotate rather than twist. The main benefit is to deliver better color reproduction at a wider range of viewing angles. Most IPS panels support 178/178 degree horizontal and vertical viewing angles.

VA

uses crystals that tilt rather than twist or rotate. This technology supports a wide color gamut and the best contrast-ratio performance

open-loop system

will usually need draining, cleaning, and refilling periodically. The fans and radiators need to be kept dust-free. The technician should drain the system prior to moving the PC to a different location.