3.5-3.9

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

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

Which of the following are true regarding a dual-channel memory bandwidth configuration?

-The memory controller must support dual-channels. -Bandwidth is increased by 5-15%.

You have a computer with a pentium 4 CPU and two PC-2400 DDR modules. The motherboard has room for two additional memory modules, and you’d like to install two PC-4000 modules. Which of the following statements is true?

All memory will operate at 300 MHz.

You have a 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 4GB memory limitation. You want to add as much memory as possible without replacing the existing modules.
What is the maximum total amount of RAM that can be installed in this system?

3 GB

You have an existing system that has a single DDR3 memory module installed. You would like to add more memory to three remaining empty memory slots. What should you do to make sure you get the right memory for the system?

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

You want to upgrade all memory in your system with the fastest memory available. Which of the following should you choose?

Choose the type of memory that is supported by your motherboard.

You want to build a new system that supports 6GB of memory. Which of the following will be the most important consideration when building the computer?

64-bit processor

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; pull straight up to remove the RAM.

What type of RAM might slow system performance because it holds memory addresses or data to improve stability on systems with more than 1 GB of RAM before it is transferred to the memory controller/

Buffered

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 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 and stacked them on top of an old, unused CRT monitor.
What is the greatest threat in this environment that could damage these memory modules?

Electrostatic discharge (ESD)

After installing two memory modules, you power on the system to check for errors. You find that the BIOS program recognizes only on of the memory modules. What should you do first?

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

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?

Move the modules to the correct motherboard slots.

You are in the process of configuring a new computer. The motherboard has six memory slots and supports triple-channel memory. You install two memory modules. when you boot the computer, the BIOS recognizes both modules, but the memory only runs in dual-channel mode. What should you do?

-Move the modules to the correct motherboard slots. -Install a third, identical memory module.

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, what should you do?

Install a 64-bit version of the operating system.

Which of the following is an error detection technique that can detect errors with only one bit?

Parity

which of the following is an error detection technique that can also correct the error?

ECC

You have just a built new system from scratch. You turn the computer on but the system boot fails and sounds a beep code.
What might be the issue?

Memory not installed or not detected.

What type of software-generated problems can indicate that a software bug is causing a memory error?

-Page fault -General-protection fault -Exception error

You just replaced the motherboard in your computer. Now your computer will not start. You press the power button on the system case, but nothing happens; there are no sounds or lights.
What should you do?

Connect the power button to the motherboard.

There are critical times when memory problems often manifest themselves.
Match the critical times on the left with the corresponding descriptions on the right of the causes of the memory problems.

-This can require more money and can cause problems if there is not enough memory at this time: Software installation -Memory is not properly seated, 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 not compatible and was not installed and configured properly: Memory upgrade.

Which of the following describes the most likely cause of this error?

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

Which of the following will most likely contain SODIMM memory?

Notebook computers

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

DIMM

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

333 MHz

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 are the advantages of DDR3 over DDR2?

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

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

DDR

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

Memory

Assuming the same operating frequency, what are the advantages of DDR4 over DDR3?

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

What is the theoretical capacity of a DDR4 standard system memory module?

512 GB

Which of the following is an upgrade of the SODIMM standard?

UniDIMM

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)

To improve system performance, you have configured a motherboard to run with a higher multiplier than what the CPU is specified to use.

overclocking

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

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

You have just upgraded the CPU on your computer. You consulted the motherboard documentation to make sure the CPU is compatible with the motherboard. You turned the system on and it locks up shortly after startup.
Which steps should you take first?

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

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 a common condition that might explain these symptoms?

An accumulation of dust has gradually built up.

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 that 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.

Lately your computer is spontaneously shutting down after only a few minutes of use. What is most likely cause?

-Overheated CPU. -Cooling fans clogged with dust.

You have just finished upgrading the CPU in your desktop system. After running the system for about 15 minutes, the system spontaneously shuts down. What should you do first to troubleshoot the problem?

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

Lately your computer is spontaneously rebooting and freezing. What is the most likely cause?

Overheated CPU.

What are two major disadvantages to overclocking the CPU?

-Voided warranty -Increased heat output

What is a ZIF socket?

A special socket for inserting and securing a processor

What is the purpose of cache memory?

Allows a processor to access data more quickly.

You have an AMD processor and an Intel processor, both of which have the same speed rating. Which of the following statements is true about the relative performance of both processors?

performance will depend on other factors such as cache and other features.

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

the ability to use over 4 GB of memory.

Which of the following statements are true?

-32-bit processors use only IA-32 instruction set (also reffered to as x86) -64-bit processors use the x86-64 instruction set (also reffered to as x64)

You have a computer system with an Intel Core i3 processor that operates at 3.7 GHz. You would like to upgrade to a faster processor, but you don’t want to replace the motherboard. Which of the following should you do first?

Read the motherboard documentation to identify which processors are supported.

You want to add a second processor to your dual-processor system. Which of the following should you do?

Match the speed of the new processor with the speed of the existing processor.

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.

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. What should you do?

Install the application normally.

You test installing a second CPU. You remove the terminating resistor from the second CPU slot, insert the CPU and perform your testing. Upon conclusion of the test you remove the second CPU and find that your system no longer boots up properly. How can you correct this situation?

Replace the terminating resistor in the slot that was occupied by the second CPU.

Match each CPU socket on the left with appropriate CPU it is designed to support on the right. Each socket can be matched up with more than one CPU.

Intel Core 2 duo: 775 AMD Athlon 64 X2: AM2+ Intel Core i7: 1366 AMD A-series APU: FM1 Intel Pentium D: 775 Athlon 64 FX: 940 intel Xeon 1366 AMD Phenom: AM2+