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CompTIA A+ > RAM > Flashcards

RAM Flashcards

1
Q

Most RAM is volatile, which means?

A

It loses any stored contents if it stops receiving power.

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2
Q

RAM that does not need to be periodically refreshed is called?

A

Static random access memory (SRAM)

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3
Q

RAM that does need to be periodically refreshed is called?

A

Dynamic random access memory (DRAM)

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4
Q

What is SDRAM or synchronous DRAM?

A

DRAM that is synchronized to the base clock of the motherboard.

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5
Q

SDRAM clock rates are:

A

66 MHz
100 MHz
133 MHz

And referred to as:

PC66
PC100
PC133

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6
Q

How many pins are on SDRAM?

A

168 pins

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7
Q

What is the most commonly used RAM?

A

Double Data Rate (DDR RAM)

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8
Q

The equation for the data transfer rates for DDR RAM is:

A

Clock speed x bytes x 2 = Data Transfer Rate

Example: 100 MHz x 8 x 2 = 1,600 MB/s

Or MT/s x 8 = Data transfer rate

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9
Q

How many pins are on DDR RAM?

A

184 pins

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10
Q

How many pins are on DDR2 RAM?

A

240 pins

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11
Q

How many pins are on DDR3 RAM?

A

240 pins

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12
Q

What is memory latency?

A

Memory latency or Column Address Strobe (CAS) latency happens when a memory controller tries to access data from a memory module. It is given a rating of CAS or more commonly CL. The higher the CL number, the longer the delay.

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13
Q

What is RAM parity?

A

When memory stores an extra bit (known as a parity bit) used for error detection.

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14
Q

What does ECC RAM do?

A

It can detect and correct errors.

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15
Q

What technology divides the RAM slots into colors?

A. ECC
B. Parity
C. Double-sided
D. Dual channel

A

D. Dual channel

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16
Q

Which of these is the delay it takes for a memory module to start sending data to the memory controller?

A. DDR
B. Propagation
C. Latency
D. FSB

A

C. Latency

17
Q

What is the main memory that the CPU uses to store or retrieve data?

A

RAM

18
Q

What is the transfer rate of DDR2–800?

A. 6,400 MB/s
B. 8,533 MB/s
C. 5,333 MB/s
D. 800 MHz

A

A. 6,400 MB/s

19
Q

Which of these would you find internal to the CPU?

A. DRAM
B. DIMM
C. SDRAM
D. SRAM

A

D. SRAM

Example is CPU cache as L1 cache.

20
Q

What is the transfer rate of DDR3–1600?

A. 6,400 MB/s
B. 12,800 MB/s
C. 14,933 MB/s
D. 17,066 MB/s

A

B. 12,800 MB/s

21
Q

Which chip designates where data will be stored in RAM?

A. Southbridge
B. Northbridge
C. CPU
D. DRAM

A

B. Northbridge

22
Q

How many pins are on a DDR3 memory module?

A. 168
B. 184
C. 240
D. 200

A

C. 240

23
Q

Some common symptoms of a RAM issue are:

A

Computer will not boot/intermittently shuts down.

The BIOS indicates a memory error.

Stop error, a.k.a. BSOD or blue screen of death.

Page faults (hard faults), out of memory or low on virtual memory errors.

General protection fault (GPF)

24
Q

Where can you view how much RAM you have in the computer? (Select all that apply)

A. Task Manager
B. My Computer
C. System Properties
D. BIOS

A

A, C, and D.

Task Manager, System a Properties and the BIOS.

25
Q

How should you hold RAM when installing it?

A. By the edges
B. By the front and back
C. With tweezers
D. With an Integrated Circuit (IC) puller

A

A. By the edges

26
Q

You suspect a problem with the memory module; what should you do first?

A. Replace the module with a new one.
B. Install more RAM.
C. Clean the RAM slot.
D. Test the RAM with MemTest86.

A

C. Clean the RAM slot

27
Q

If BSOD occurs, what should you do?

A. Replace all the RAM.
B. Re-install the operating system.
C. Check the RAM settings in the BIOS.
D. Wait for it to happen again.

A

D. Wait for it to happen again.

Often a single BSOD occurs but you never see it again, you want to make sure you see two or more of the same error before starting into the troubleshooting session.

28
Q

You just upgraded a PC’s motherboard and CPU. However, when you turn the computer on, it will not POST. What should you do first?

A. Check that the system hasn’t overheated.
B. Check if the RAM is properly seated.
C. Check that the OS was installed properly.
D. Check if the mouse and keyboard are connected properly.

A

B. Check if the RAM is properly seated.

29
Q

You just investigated a computer that is suffering from intermittent shutdowns. You know that the RAM modules are overheating. What is the best solution?

A. Install a heat sink on the memory controller.
B. Install more CPU fans.
C. Install heat sinks on the RAM modules.
D. Install heat sink on the chipset.

A

C. Install heat sinks on the RAM modules.

30
Q

You just installed new, compatible RAM into a motherboard, but when you do the computer it does not recognize the memory what should you do?

A. Flash the BIOS.
B. Replace the RAM.
C. Upgrade the CPU.
D. Add more RAM.

A

A. Flash the BIOS.

CompTIA A+ (18 decks)

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