RAM Flashcards Preview

CompTIA A+ 220-1001 > RAM > Flashcards

Flashcards in RAM Deck (21)
Loading flashcards...
1

Name RAM

Random Access Memory

2

Name DIMM

Dual In-line Memory Module

3

What is different about the electrical contacts on DIMM?

There are duel electrical contacts and are both different on each side.

4

What is the data width of a single DIMM?

64 Bit

5

Name SO-DIMM

Small Outline Dual In-line Memory Module

6

Name DRAM

Dynamic Random Access Memory

7

What is DRAM

The memory modules found on the DIMM

8

What is the key factor of DRAM

Need constant refreshing. If not the data in the memory disappears

9

Why is it Random Access Memory?

Any storage location can be accessed directly

10

What does the S in SDRAM stand for?

Synchronous

11

What does SDRAM do?

Synchronizes its processes with the common system clock. Queues one process while waiting for another.

12

Name SDR

Single Data Rate

13

Name DDR

Double Data Rate

14

How much data can SDR process in One Clock Cycle?

1 data block

15

How much data can DDR process in One Clock Cycle?

2 data blocks

16

Maximum size of DDR4 per DIMM?

64 GB per DIMM

17

Are DDR, DDR2, DDR3 and DDR4 backwards compatible?

No. The keys on the modules are in different spots on the DIMMs

18

What does Parity Memory do?

Adds an additional parity bit.

Won't always detect and error.

Can't correct errors

19

What is ECC memory?

Error Correcting Code

20

What does ECC memory do?

Detects errors and corrects them on the fly

21

Can you use ECC on any system?

No. Confirm the motherboard can support it.