Chapter 3 Questions

What is the speed in MHz of a DIMM rated at PC4 24000?

3,000 MHz

How many threads can a quad-core processor handle at once?

8

A motherboard has four DIMM slots; three slots are gray and the fourth is black. What type of memory is this board designed to fit?

B: DDR3

What new parts will you need to replace a failing processor? Select all that apply.

B: Processor C: Cooling assembly D: Thermal compound

An experienced user has installed Oracle VM VirtualBox on her workstation and is attempting to use it to create a virtual machine (VM). The software is causing error messages while attempting to create the VM. What is most likely the problem?

B: Virtualization is not enabled in BIOS/UEFI.

A friend has asked you to help him find out if his computer is capable of overclocking. How can you direct him? Select all that apply.

C: Explain to your friend that overclocking is not a recommended best practice. D: Show him how to open the computer case, read the brand and model of his motherboard, and then do online research.

When planning a memory upgrade, you discover that Windows 8 reports 4 GB of memory installed. In BIOS/UEFI, you see that two of four slots are populated. You install two 2-GB DIMMS in the two empty DIMM slots. When you boot the system, Windows 8 still reports 4 GB of memory. Order the four steps you should take to troubleshoot the problem of missing memory.

C: Open the System Information window to verify the edition or version of Windows 8 installed. B: Go into BIOS/UEFI and verify that it recognized 8 GB of installed memory. A: Open the case and verify that the DIMM modules are securely seated. D: Inspect the DIMMs you installed to verify that they match the existing DIMMs and those the motherboard can support.

You have just upgraded memory on a computer from 4 GB to 8 GB by adding one DIMM. When you first turn on the PC, the memory count shows only 4 GB. Which of the following is most likely the source of the problem? What can you do to fix it?

C: The new DIMM is not properly seated.

Which is faster, CL3 or CL5 memory?

CL3

A DIMM memory ad displays 5-5-5-15. What is the CAS Latency value of this DIMM?

CL5

If 2 bits of a byte are in error when the byte is read from ECC memory, can ECC detect the error? Can it fix the error?

It can detect the error, but not fix it.

If your motherboard supports ECC DDR3 memory, can you substitute non-ECC DDR3 memory?

No

In memory ads for DIMMs, you notice DDR 2400 CL15 in one ad and PC4 21300 CL9 in another. Which ad is advertising the faster memory?

PC4 21300 CL9.

What prevents a DDR3 DIMM from being installed in a DDR2 DIMM slot on a motherboard?

The notches on the edge connectors are in different locations.

Your motherboard supports dual channeling and you currently have two slots populated with DIMMs; each module holds 2 GB. You want to install an additional 4 GB of RAM. Will your system run faster if you install two 2-GB DIMMs or one 4-GB DIMM? Explain your answer.

Two 2-GB DIMMs because the dual channeling will double the speed of memory access.

A motherboard uses dual channeling, but you have four DIMMs available that differ in size. The motherboard supports all four sizes. Can you install these DIMMs on the board? Will dual channeling be enabled?

You can install the DIMMs, but dual channeling will not be enabled.