test study 4th

You are in a carpeted office lighted by fluorescent bulbs. You are preparing to add memory modules to a user's computer. The user has already unpacked the memory modules and stacked them on top of an old, unused CRT monitor. What is the greatest threat to these memory modules in this environment?

Electrostatic discharge (ESD).

Which of the following should you always do to avoid damage when you prepare to install a CPU? (Select two.)

Ensure that the CPU and motherboard socket type match. Use anti-static protection.

You have been using the same computer for several years. To improve performance, you decide to upgrade the processor. You check the motherboard documentation and purchase the fastest processor that is supported by the motherboard. However, when you try to start the computer, it beeps regularly, and nothing is displayed on the screen. Which of the following actions will MOST likely resolve this issue? (Select two.)

Flash the UEFI firmware. Reinstall the old processor in the motherboard.

Your server runs in quadruple-channel memory mode. How many memory controllers are being used?

Four

Which of the following is the biggest advantage of 64-bit processors over 32-bit processors?

The ability to use over 4 GB of memory.

You have an older computer that has four DDR2 memory slots. Currently, there are two 512-MB memory modules installed. You check the motherboard documentation and find that the system has a 4-GB memory limitation. You want to add more memory to this system. What is the maximum total amount of usable RAM you can have in this system by adding new memory modules (and without replacing the existing memory modules)?

3 GB

Dual-channel memory systems only theoretically double memory bandwidth. What is the bandwidth increase in actual terms?

5-15%

Which of the following BEST describes the theoretical capacity of a DDR4 standard system memory module?

512 GB

You want to build a new system that supports 16 GB of memory. Which of the following is the MOST important consideration when building the computer?

64-bit processor

Consider the memory modules shown in the image below. Drag each label on the left and drop it on the letter on the right that best identifies the associated memory module form.

A DDR DIMM B DDR3 DIMM C DDR4 DIMM D DDR2 DIMM E 200-pin SO-DIMM F 144-pin SO-DIMM G UniDIMM

Which of the following BEST describes the purpose of a CPU socket?

A CPU socket is a single connector between a microprocessor and the motherboard.

Which of the following are critical times when memory problems manifest themselves? (Select two.)

After you remove or install hardware On the first boot of a new computer

After working without problems for a couple of years, your computer has begun to lock up. You suspect that it is a thermal issue, but you can't find any component that is not functioning correctly. You have not replaced the CPU or installed any new devices. The CPU cooling fan and the power supply fan are working properly. The lock-ups are happening with increasing frequency. Which of the following is the MOST common condition that explains these symptoms?

An accumulation of dust has gradually built up.

To improve system performance, you have configured a motherboard to run with a higher multiplier than what the CPU is specified to use. Since doing this, the system has become unstable and crashes frequently. Which of the following should you do to restore system stability?

Back off on the overclocking settings until the system runs in a stable manner.

You work as the IT administrator for a small corporate network. Sam, an employee in the support department, wants to run a virtual machine on his computer for troubleshooting customer issues, and he needs a very stable computer from which to work. You need to decide whether to install buffered or non-buffered RAM in his computer. Which of the following BEST describes the reason to choose buffered instead of unbuffered memory for this new computer?

Buffered memory reduces the load on the memory controller and allows the system to be more stable.

With a memory module read request, there is a delay between the time of the data request and the time the data is available for output from the memory module. What is this delay called?

CAS latency

You want to configure your computer so that a password is required before the operating system will load. What should you do?

Configure a user password in the BIOS/UEFI.

Which of the following functions are performed by the Trusted Platform Module (TPM)?

Creates a hash based on installed system components.

Your motherboard has sockets for 184-pin DIMM RAM. Which type of RAM should you install?

DDR

Which of the following DDR memory types can be used by a triple-channel memory system? (Select two.)

DDR4 DDR3

What are the advantages of DDR4 over DDR3, assuming the same operating frequency? (Select two.)

DDR4 doubles the data transfer rate of DDR3. DDR4 uses less power than DDR3.

Which of the following memory ratings identifies the fastest memory?

DDR4-1600

You have purchased a new notebook. This notebook system uses UEFI firmware and comes with Windows 11 preinstalled. However, you want to use Linux on this system. You download your favorite distribution and install it on the system, removing all Windows partitions on the hard disk in the process. When the installation is complete, you find that the operating system won't load when the system is rebooted. Which of the following would allow your computer to boot to Linux?

Disable SecureBoot in the UEFI configuration.

To fix a problem you are having with your PC, you have determined that you must flash the computer's BIOS. Which of the following would MOST likely need to be completed prior to flashing the BIOS? (Select two.)

Download the flash utility or tool from the manufacturer's website. Properly identify the motherboard.

You are attempting to boot a new system. The boot fails, and the system sounds a beep code. Which of the following describes the MOST likely cause of this error?

Either no memory is installed or the memory was not detected.

Since it has no moving parts, a CPU will usually work properly for several years. Which of the following is a common factor that might cause a CPU to fail prematurely?

Electrostatic discharge (ESD)

You have installed a new computer with a quad-core 64-bit processor, 6 GB of memory, and a PCIe video card with 512 MB of memory. After installing the operating system, you see less than 4 GB of memory showing as available in Windows. Which of the following actions would MOST likely correct this issue?

Install a 64-bit version of the operating system.

You have a computer with a dual-core 64-bit processor that uses the x86-x64 instruction set. You want to install the 32-bit application on the computer. Which of the following BEST describes the action that you should perform?

Install the application normally.

Upon reviewing the specifications for a motherboard, you find that the motherboard uses a 1155 CPU socket. Which of the following manufacturers' CPUs can you use for this motherboard?

Intel

Which statements are true of processor caches? (Select two.)

L3 is shared between all cores. L1 is typically unique to a processor core.

You have just upgraded your computer's CPU. You consulted the motherboard documentation to make sure that the CPU was compatible with the motherboard. However, when you turn the system on, it locks up shortly after startup. Which of the following are the BEST steps to try first while troubleshooting this issue? (Select two.)

Look for something that could be causing the new CPU to overheat. Make sure that the CPU is seated properly, oriented correctly, and locked in to the socket.

After installing two memory modules, you power on the system to check for errors. You find that the BIOS program recognizes only one of the memory modules. Which of the following is BEST to try first when troubleshooting this issue?

Make sure that both modules are seated properly in their slots.

A customer needs to use several applications. Currently, the computer cannot keep all the necessary applications open at the same time. Which of the following components should you consider upgrading?

Memory

You have just built a new system from scratch. You turn the computer on, but the system boot fails and sounds a beep code. Which of the following is the MOST likely cause?

Memory is not installed or is not detected.

You are in the process of configuring a new computer. The motherboard has four memory slots and supports dual-channel memory. You install two memory modules. When you boot the computer, the BIOS recognizes both modules, but the memory is not configured to run in dual-channel mode. What should you do to resolve the issue?

Move the modules to the correct motherboard slots.

Which of the following is the most common method for removing RAM from a motherboard?

Move the tabs holding the RAM out of the way; then pull straight up to remove the RAM.

Which of the following is a characteristic of a multi-processor system?

Multiple processor sockets on the motherboard.

Zoey has brought her computer in for servicing. When she dropped off her computer, she mentioned that it spontaneously reboots and freezes occasionally. Which of the following is the MOST likely cause of these problems?

Overheated CPU

Steve, a computer technician, receives a help desk ticket for a computer that will not start. When Steve powered the computer on, there was one long and two short beeps. Which of the following programs is reporting this error condition?

POST

Which type of software-generated problems can indicate that a software bug is causing a memory error? (Select three.)

Page Fault Exception Error General-protection fault

The processor you have just purchased has a series of pins in an array on the underside of the processor package. You notice that the pins insert into corresponding receptacles within the processor socket on the motherboard. Which type of socket is this processor configured to use?

Pin grid array (PGA)

You have an existing system that has a single DDR3 memory module installed. You would like to add more memory to the three remaining empty memory slots. Which of the following steps should you take to make sure that you get the right memory for the system? (Select two.)

Purchase additional modules that are the same as what is currently installed. Check the motherboard documentation to find which modules are supported.

Your computer has a single core processor installed. The motherboard supports processors with up to four cores. You want to upgrade your computer to a quad-core system. Which of the following is part of the configuration steps?

Replace the existing processor with one that has four cores.

Your system crashes at various times. It happens sometimes on startup, sometimes when running a software application, and sometimes when a certain group of applications is running. You suspect a malfunctioning CPU, but none of the common issues seem to be present. You have not configured overclocking. There is no overheating. The CPU is seated correctly and locked into its socket. What is the BEST step you can take to determine if the CPU is causing the system crashes?

Replace the suspect CPU with a known good CPU of the same make and model.

What is the role of the CMOS in a modern computer?

Saves information about system devices.

Which of the following statements is true regarding single- and double-sided memory?

Single-sided memory uses half the number of memory modules as double-sided memory of the same capacity.

An employee complains that every time they turn their computer off, the computer's time is set to 12:00 p.m., and the date is set back to January 1, 1990. Which of the following is the MOST likely cause of this anomaly?

The CMOS battery has failed.

When you boot your computer, it hangs after asking you for the current time and date. What is the MOST likely problem?

The CMOS battery has failed.

You work at a computer repair store. You have just upgraded the processor (CPU) in a customer's Windows-based computer. The customer purchased the latest AMD Ryzen processor, and you installed it in the computer. But when you power the computer on, you only see a blank screen. Which of the following is MOST likely causing the computer to display the blank screen? (Select two.)

The CPU is bad. The CPU is not supported by the BIOS.

Lately, your computer has been spontaneously shutting down after only a few minutes of use. What is the likely cause? (Select two.)

The power connector for the fan was not connected to the motherboard. The heat sink and fan were not installed correctly.

You have just purchased a new computer. This system uses UEFI firmware and comes with Windows 11 preinstalled. You recently accessed the manufacturer's support website and saw that a UEFI firmware update has been released. You download the update. However, when you try to install it, an error message is displayed that indicates the digital signature on the update file is invalid. Which of the following MOST likely caused this to happen?

The update file has been tampered with.

There are critical times when memory problems often manifest themselves. Match each critical time on the left with the corresponding cause of the memory problems on the right.

This event can require more memory and can cause problems if there is not enough memory when it occurs. Software installation Memory is not properly seated, is missing, or the motherboard is defective. First boot of a new computer Incompletely or improperly doing this can cause errors that appear to be memory-related. Hardware installation or removal The memory is incompatible and was not installed and configured properly. Memory upgrade

A laptop that you previously purchased was shipped with SO-DIMM memory to accommodate the laptop's form factor. You would now like to upgrade the memory. Which of the following is an upgrade to the SO-DIMM standard?

UniDIMM

You have overclocked the processor on your workstation to run at a higher speed. Now the workstation is overheating, and you are concerned that the processor might become damaged. Which of the following is the BEST solution to this issue?

Upgrade the workstation cooling devices.

A user has called to complain that her computer won't boot. It stops on the system startup screen right after the memory has been tested and displays a 301 keyboard error. Which of the following troubleshooting steps is the BEST to try first?

Verify that no keys are being pressed down during POST.

A few of your employees have complained that their computers sometimes shut down spontaneously. You have noticed that these employees all work in a part of the building where the air conditioning does not adequately cool the room. These employees also use CPU-intensive programs. You suspect that the spontaneous shutdowns are caused by overheating. Which of the following is the simplest way to monitor the temperature of these computers' CPUs?

View the temperature from within the BIOS.

When do you need to upgrade the system BIOS?

Whenever a BIOS update provides functionality that is not currently supported, but is required by the operating system or hardware.

You have just upgraded the memory in one of your network servers by adding two 4-GB ECC memory cards. Before purchasing the new memory, you made sure that the modules fit in the memory slots (packaging) and the speed (memory frequency) was supported by the memory controller. What did you forget to check that would significantly impact the memory checking of your new ECC memory cards?

Whether or not the existing memory modules support ECC.

You are trying to push a memory module into a memory slot, but it is not seating properly. What is the MOST likely issue?

You are trying to install the memory module backwards in the memory slot.

After installing a new RAM module, you boot your 64-bit system, but the display remains blank. What is the MOST likely cause of this issue?

You have installed a non-parity RAM on an ECC system.

Where do you install the heat sink and fan once you insert the CPU into the motherboard socket?

You install both on top of the CPU.

Which of the following are the MOST likely signs that your computer might need more memory? (Select two.)

Your hard drive is constantly operating as you work. Your hard drive light on the system case is on for long periods of time.