A+ Essentials Chapter 4

1. What is the term for the delay in the RAM’s response to a request from the MCC?

Variance

MCC gap

Latency

Fetch interval

Latency is the term for the delay in the RAM’s response to a request from
the MCC.

Explanation

Latency is the term for the delay in the RAM’s response to a request from
the MCC.

2. Gregor installed a third stick of known-good RAM into his Athlon 64 system,
bringing the total amount of RAM up to 768 MB. Within a few days, though,
he started having random lockups and reboots, especially when doing
memory intensive tasks like gaming. What is most likely the problem?

Gregor installed DDR RAM into a DDR2 system.

Gregor installed DDR2 RAM into a DDR system.

Gregor installed RAM that didn’t match the speed or quality of the RAM in the system.

Gregor installed RAM that exceeded the speed of the RAM in the system.

Most likely, Gregor installed RAM that didn’t match the speed or quality of
the RAM in the system.

Explanation

Most likely, Gregor installed RAM that didn’t match the speed or quality of
the RAM in the system.

3. Steve adds a second 512-MB 240-pin DIMM to his PC, which should bring
the total RAM in the system up to 1 GB. The PC has a Pentium 4 3.2-GHz
processor and three 240-pin DIMM slots on the motherboard. When he turns
on the PC, however, the RAM count only shows 512 MB of RAM. Which of the
following is most likely to be the problem?

Steve failed to seat the RAM properly.

Steve put DDR SDRAM in a DDR 2 slot.

The CPU cannot handle 1 GB of RAM.

The motherboard can use only one RAM slot at a time.

Steve failed to seat the RAM properly.

Explanation

Steve failed to seat the RAM properly.

4. Cindy installs a second stick of DDR2 RAM into her Core 2 Duo system,
bringing the total system memory up to 2 GB. Within a short period of time,
though, she begins experiencing Blue Screens of Death. What could the
problem be?

She installed faulty RAM.

The motherboard could only handle 1 GB of RAM.

The motherboard needed dual-channel RAM.

There is no problem. Windows always does this initially, but gets betterafter crashing a few times.

If you have no problems with a system and then experience problems after
installing something new, then chances are the something new is at fault!

Explanation

If you have no problems with a system and then experience problems after
installing something new, then chances are the something new is at fault!

5. What is the best way to determine the total capacity and specific type of RAM
your system can handle?

Check the motherboard book.

Open the case and inspect the RAM.

Check the Device Manager.

Check the System utility in the Control Panel.

The best way to determine the total capacity and specific type of RAM your
system can handle is to check the motherboard book.

Explanation

The best way to determine the total capacity and specific type of RAM your
system can handle is to check the motherboard book.

6. Scott wants to add 512 MB of PC100 SDRAM to an aging but still useful
desktop system. The system has a 100-MHz motherboard and currently has
256 MB of non-ECC SDRAM in the system. What else does he need to know
before installing?

What speed of RAM does he need?

What type of RAM does he need?

How many pins does the RAM have?

Can the system handle that much RAM?

Scott needs to know if the system can handle that much RAM.

Explanation

Scott needs to know if the system can handle that much RAM.

7. Rico has a motherboard with four RAM slots that doesn’t seem to work. He
has two RDRAM RIMMs installed, for a total of 1 GB of memory, but the
system won’t boot. What is likely to be the problem?

The motherboard requires SDRAM, not RDRAM.

The motherboard requires DDR SDRAM, not RDRAM.

The motherboard requires all four slots filled with RDRAM.

The motherboard requires that the two empty slots be filled with CRIMMsfor termination.

RDRAM-based motherboards require empty slots to be filled with CRIMMs
for termination.

Explanation

RDRAM-based motherboards require empty slots to be filled with CRIMMs
for termination.

8. Silas has a new Athlon 64 motherboard with two sticks of DDR2 RAM
installed in two of the three RAM slots, for a total of 2 GB of system memory.
When he runs CPU-Z to test the system, he notices that the software claims
he’s running single-channel memory. What could be the problem? (Select the
best answer.)

His motherboard only supports single-channel memory.

His motherboard only supports dual-channel memory with DDR RAM,not DDR2.

He needs to install a third RAM stick to enable dual-channel memory.

He needs to move one of the installed sticks to a different slot to activate dual-channel memory.

Motherboards can be tricky and require you to install RAM in the proper
slots to enable dual-channel memory access. In this case, Silas should move
one of the installed sticks to a different slot to activate dual-channel memory.
(And he should check the motherboard manual for the proper slots.)

Explanation

Motherboards can be tricky and require you to install RAM in the proper
slots to enable dual-channel memory access. In this case, Silas should move
one of the installed sticks to a different slot to activate dual-channel memory.
(And he should check the motherboard manual for the proper slots.)

9. Motherboards that support more than four sticks of RAM may require what to
function properly?

Buffered RAM

ECC RAM

Dual-channel RAM

DDR2 RAM

Motherboards that support more than four sticks of RAM may require
buffered RAM to function properly.

Explanation

Motherboards that support more than four sticks of RAM may require
buffered RAM to function properly.