PC Pro: Chapter 3 Practice Questions

You are trying to troubleshoot a desktop power supply issue using a voltmeter. Which of the following options are the MOST common voltages produced by the power supply? (Select TWO).

1. +/- 12v 2. +/- 5v

3.1.3 Practice Questions

3.1 Cases And Form Factors

3.2.6 Practice Questions

3.2 Power Supplies

3.3.6 Practice Questions

3.3 Motherboards & Buses

3.4.5 Practice Questions

3.4 Motherboard Troubleshooting

3.5.9 Practice Questions

3.5 Processors

3.6.5 Practice Questions

3.6 Processor Troubleshooting

3.7.6 Practice Questions

3.7 Memory

Assuming all other processor specifications are the same, which of the following processor sizes will consume the least amount of power?

32 mn

What is the approximate bus speed of DDR2 memory rated at PC2-5300?

333 MHz

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

512 GB.

You have a laptop with a dual-core processor that has the following characteristics: · 1024 KB L2 cache · 125 Watts · 45nm process size You want to upgrade the processor to one that uses less power. Which of the following characteristics would MOST likely identify a processor that uses less power?

90 watts

Consider the following diagram of a typical motherboard. Drag the label on the left to the letter on the right that best identifies the associated connector.

A - PCI B - PCIe x16 C - PCIe x1 D - Case fan power E - CPU power F - CPU G - Memory H - Power supply I - SATA J - Front/top panel K - USB L - IEEE 1394

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.

A computer's power supply converts mains AC to low-voltage regulated DC power for the internal components of a computer. You are building a new computer. You are deciding which type of power supply to install. Which of the following definitions BEST describes a valid type of power supply?

A dual-rail power supply provides separate rails (PCB traces) used to balance the power load between multiple circuits, which prevents any one circuit from becoming overloaded.

Consider the memory modules shown in the image below. Drag the 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 DIM E. 200-pin SODIMM F. 144-pin SODIMM G. UniDIMM

You are a high school student learning about computers and how to build them. As a class project, you have built a new computer. You power on your computer and begin to configure the system. After a short while, you notice smoke coming from the PC, and shortly after that, the computer stops working. After removing the computer case, you see that the CPU and surrounding areas are burnt and very hot. You realize that the costly mistake you made was not using a heat sink. When rebuilding your computer, which of the following cooling systems would MOST efficiently remove heat from the CPU

Active heat sink, thermal paste, liquid pipes, and fan

After arriving at work, you turn on your computer to begin your day. Instantly, you see smoke and smell a strange odor coming from the computer. Which of the following would be the MOST important action to take?

After arriving at work, you turn on your computer to begin your day. Instantly, you see smoke and smell a strange odor coming from the computer. Which of the following would be the MOST important action to take?

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 might explain 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. To restore system stability, which of the following should be completed?

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

Brian is a new employee on the development team. As part of his job, he runs three virtual machines (VMs) on his computer. Each VM runs a different Windows license. After a while, Brian notices that his VMs are not running as fast as he thought. He has asked you to explore the issue. Which of the following BEST describes why Brian's VMs are running slowly?

Brian's computer has a single-core CPU configured to use hyper-threading

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

Which function does a motherboard's chipset perform?

Facilitates communication between the processor, memory, and peripheral devices

Which of the following BEST describes the chipset?

Facilitates communication between the processor, memory, and peripheral devices.

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 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 would MOST likely rectify this issue? (Select TWO).

Flash the UEFI firmware Reinstall the old processor in the motherboard

You need to replace the power supply in your home desktop computer. Which of the following specifications are the most likely to affect your power supply choice? (Select THREE).

Form factor Output wattage Type and number of connectors

When using Intel chips, which of the following features BEST allows a single processor to run two threads in parallel instead of processing single threads linearly?

Hyper-threading

Which of the following objects is installed between the back side of the system case and the motherboard's ports?

I/O shield

Your company relocated you from the United States to their United Kingdom office in London. You brought your personal computer with you and are in the process of setting it up. Your computer was previously configured to receive 115 VAC, but the electricity in London uses 230 VAC. Which of the following would allow your computer to run on 230 VAC?

Inspect the power supply unit for a manual voltage switch and move it to 230 VAC otherwise no action is necessary.

An employee submitted a support ticket stating that her computer will not turn on. Which of the following troubleshooting steps should you take first? (Select TWO).

Make sure the power cord is plugged into the wall. Make sure the surge protector is turned on.

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 want to build a computer that can stand upright on a desk and takes up the least amount of space possible.

Micro-ATX slim tower

Which of the following motherboard form factors BEST allows for low-consumption power supplies?

Mini-ITX

Which of the following refers to placing two processors on a single processor chip or die?

Multi-core

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

Multiple processor sockets on the motherboard

You decided to upgrade your PC with a faster processor. To do this, you ordered a new motherboard over the Internet that supports the processor you want to use. When it arrives, you discover that the motherboard uses the Micro-ATX form factor. Your current case is an ATX mid-tower with a standard ATX motherboard inside. What steps must be taken for the Micro-ATX motherboard to work in the ATX case?

No additional steps are necessary, the Micro-ATX motherboard can be installed in the ATX case.

You are testing the power supply in a PC system by measuring the voltage available on the 4-pin Molex connector. The voltage on the red wire is +5.1 volts. What should you do?

Nothing. The power supply is working normally.

You would like to upgrade the processor in your system to a 64-bit processor. Which of the components will you most likely need to upgrade as well to take full advantage of the new processor?

Operating system

Zoey has brought her computer in for servicing. When she dropped off her computer, she mentioned that her computer will sometimes spontaneously reboot and freezes occasionally. Which of the following is the MOST likely cause of this problem?

Overheated CPU

Which expansion slot is best for high-end dedicated video cards?

PCIe x16

Steve, a computer technician, received a helpdesk 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 of the following connectors are part of the system case and connect to header pins on the motherboard? (Select two.)

Power Switch HDD LED Activity

You need to replace the power supply in your home desktop computer. As you choose the replacement power supply, which of the following specifications are the MOST likely to affect your choice? (Select THREE).

Processor connector Form factor Output wattage

You have a computer system with a dual-core processor. You would like to upgrade to a quad-core processor, but you don't want to replace the motherboard. Which of the following steps SHOULD you perform first?

Read the motherboard documentation to identify which processors are supported.

Your computer has one 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 will be part of your configuration?

Replace the existing processor

A user calls to complain that her computer is behaving erratically. Some days it functions correctly, and other days, it crashes frequently. Sometimes, the system won't boot at all. You open the system case and notice the following: · Two of the mounting screws are missing from the system hard disk drive. · The system uses memory modules from several different manufacturers with mismatched capacities. · Several capacitors on the motherboard are bulging and have a brown liquid oozing from them. · The chassis fan on the front of the case is oriented to blow air into the system. What should you do?

Replace the motherboard

You are servicing a client's computer that has been randomly restarting. You decide to test the power supply using a multimeter. You connect the positive lead to the yellow wire on one of the Molex connectors. Which of the following BEST describes the action you should take based on the multimeter reading shown below?

Replace the power supply because it is failing.

You are testing the power supply in a PC system by measuring the voltage available on the 4-pin Molex connector. The voltage on the yellow wire is +10.1 volts. What should you do?

Replace the power supply.

Your system crashes at various times: sometimes on startup, sometimes when running a software application, sometime 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 can you do to definitively determine if the CPU is causing the system crashes?

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

Consider the connectors highlighted on the motherboard diagram below. Select the CPU socket and CPU power connector. (Select TWO).

See Picture

Consider the connectors highlighted on the motherboard diagram below. Select the USB connectors. (Select ONE).

See Picture

Consider the expansion and memory slots highlighted on the motherboard diagram below. Select the PCI, PCIe x16, and PCIe x1 slots. (Select FOUR).

Select first two and last two slots

You are in the process of installing a motherboard in a system case. Which of the following objects should you place between the motherboard and the system case?

Standoffs

You work at a computer repair store. You just upgraded the processor (CPU) in a customer's Windows-based computer. The customer purchased the latest AMD Phenom II processor, and you installed it in the computer. When you power the computer on, you only see a blank screen. Which of the following is MOST likely causing the computer displaying a blank screen? (Select TWO).

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

You have just finished replacing the motherboard in your friend Ethan's computer with the same type of motherboard it originally had. You tested the motherboard by powering it on and verifying that the operating system started, and his applications were working. Now Ethan is complaining that his computer no longer recognizes his external hard drive. Which of the following is MOST likely causing the external hard drive not to function?

The USB front panel connector was not properly connected.

You work at a computer repair store. You just upgraded the processor (CPU) in a customer's computer. The computer starts, but it shuts down shortly after starting Windows. Which of the following is MOST likely causing the computer to automatically shut down?

The fan has no power

When you try to boot your computer, it hangs after POST. When you access the UEFI setup program, you see that the date is several years behind, and the time is set to 12:01 a.m. Which of the following is the MOST likely cause of this behavior?

The motherboard battery has failed

You are building a new computer from both new and used parts. The video card is a PCIe video card that requires an 8-pin power connector. However, your power supply doesn't have an 8-pin PCIe power connector. Which solution would be the least expensive option for your system?

The wattage requirement for each individual circuit uses formula W = V x A The watt rating indicates how much power can be supplied to various devices.

You are in the process of purchasing several new computers to replace broken or outdated computers. After much research, you have determined to purchase computers that use AMD sockets. Which of the following BEST describes an AMD and why you would select this option? (Selec

Typically, an AMD uses a Pin Grid Array (PGA) socket type Typically, AMD chips are less expensive

A laptop that you previously purchased was shipped with SODIMM 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 SODIMM standard?

UniDIMM

You have been using the same computer for several years. To extend its service life, you decide to upgrade the processor. You check the motherboard documentation and purchase the fastest processor supported by the motherboard. However, when you start the computer, it beeps regularly, nothing is displayed on the screen, and it doesn't start. While troubleshooting this computer, which of the following would be BEST to try first?

Update the UEFI firmware

Your motherboard has two memory slots and supports a maximum of 8 GB of RAM. You are using a 32-bit version of Windows. After installing two 4 GB modules and booting your system, you find that Windows only recognizes 3.5 GB of RAM. Which of the following would MOST likely fix this issue?

Upgrade to a 64-bit version of Windows

You have a desktop computer that uses a 250-watt power supply. You recently added a four-disk RAID 10 array to the system, and now it spontaneously shuts down. Which of the following would MOST likely rectify this issue?

Upgrade to a power supply that provides more watts.

You work as the IT administrator for a small corporate network. One of the company employees needs to add an additional PCI card to the motherboard in a small form factor case. When you open the computer, you see that the card purchased will not fit due to the card's height. Which of the following is the BEST method for using the newly purchased card?

Use a riser card to allow the new card to be installed parallel to the motherboard.

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 condition 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 the computer's CPU?

Viewing the temperature from within the BIOS

You have a desktop computer that you want to upgrade. You add several internal components and external components. You realize that you need to ensure that your power supply can support all of the new devices. Which of the following power supply ratings BEST describes the rating used to determine this?

Watt rating

You have just finished upgrading the CPU in your desktop system. After running for about 15 minutes, the system spontaneously shuts down. Which steps should you take to begin troubleshooting the issue? (Select TWO).

Check the CPU fan power Check the thermal shutdown threshold in the BIOS

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

DDR

Assuming the same operating frequency, what are the advantages of DDR3 over DDR2? (Select TWO.)

DDR3 uses less power than DDR2 DDR3 doubles the data transfer rate of DDR2

Which of the following memory ratings identifies the fastest memory?

DDR3-1600.

Which memory rating identifies the fastest memory?

DDR3-2000.

Assuming the same operating frequency, what advantages does DDR4 have over DDR3? (Select TWO.)

DDR4 Doubles the data transfer rate of DDR3 DDR4 uses less power than DDR3

Which of the following are terms used to identify memory modules?

DIMM

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 you should perform?

Install the application normally

You have just received an order of various system components from an order you placed several weeks ago. One of the components is labeled as SODIMM memory. For which of the following was this memory MOST likely purchased?

Laptop computers.

You have just upgraded the CPU on your computer. You consulted the motherboard documentation to make sure the CPU is compatible with the motherboard. However, when you turned the system on, it locks up shortly after startup. While troubleshooting this issue, which of the following are the BEST steps to try first? (Select TWO).

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

Which of the following is an advantage of purchasing a motherboard with integrated graphics and audio?

Lower overall system cost

Which of the following form factors does not have expansion slots on the motherboard, but instead uses a riser card for expansion cards?

nlx