Assign#1 Memory Vid/Overview of Memory - CompTIA A+ 220-1001-3.3

Question 1

RAM AKA

Answer 1

Random Access Memory

Question 2

Where is data stored permanently?

Answer 2

Hard drive or SSD

Question 3

from where to where are programs and data moved when accessed and changed?

Answer 3

from SSD or hard drive to RAM

Question 4

Memory types have…

Answer 4

…changed through the years

Question 5

what’s driven the change in memory types?

Answer 5

standardization and technology

Question 6

what’s mainly determines overall speed, performance of computer?

Answer 6

transfer speed in/out of RAM

Question 7

DIMM AKA

Answer 7

Dual inline memory module

Question 8

What’s the Dual for in DIMM?

Answer 8

Dual for the both sides of the same edge has one set of different contacts on each side

Question 9

DIMM have how much data width

Answer 9

64 bit data width

Question 10

SO-DIMM AKA

Answer 10

Small Outline Dual In-line Memory Module

Question 11

SO-DIMM is about

Answer 11

half the width as a DIMM

Question 12

where are SO-DIMM used?

Answer 12

Laptops, and mobile devices

Question 13

DIMM would be found in

Answer 13

desktop computer

Question 14

DRAM AKA

Answer 14

Dynamic Random Access Memory

Question 15

what kind of memory is DIMM?

Answer 15

DRAM

Question 16

Why DRAM is dynamic?

Answer 16

Dynamic because needs constant refreshing. the data is lost if it’s not refreshed.

Question 17

Why DRAM is random?

Answer 17

because any storage location/data can be accessed directly any place at any time

Question 18

what kind memory technology is un-random-like-accessible like random in RAM?

Answer 18

magnetic tape

Question 19

What kind of DRAM would you find on today’s computers?

Answer 19

Synchrounous DRAM

Question 20

SDRAM AKA

Answer 20

synchronous DRAM

Question 21

Why SDRAM is synchronous?

Answer 21

synchronizes with common system clock of computer

Question 22

why SDRAM must be synchronous?

Answer 22

so the standard flow of communication based on clock cycles can cue things up in a very standard format.

Question 23

SDRAM queues up what?

Answer 23

one process while waiting for another

Question 24

what’s different about SDRAM than old classic DRAM?

Answer 24

classic DRAM didn’t wait for a clock signal

Question 25

SDR AKA

Answer 25

Single data rate

Question 26

DDR AKA

Answer 26

Dual data rate

Question 27

what is SDR?

Answer 27

where one bit of data can be transferred during one clock cycle

Question 28

what is DDR?

Answer 28

where two bits of data can be transferred during one clock cycle

Question 29

what is DDR2?

Answer 29

2nd generation of DDR, and twice as fast as original DDR.

Question 30

can you choose whatever generation of DDR you want?

Answer 30

no, none of them are backwards or forward compatible. You must use whichever the system requires.

Question 31

what is DDR3?

Answer 31

3rd generation of DDR, it’s twice as fast as DDR2, larger chip capacities, and brought maximum size 16GB per DIMM

Question 32

DDR# AKA

Answer 32

Double Data Rate (# of gen)

Question 33

What is DDR4?

Answer 33

it’s faster than DDR3, and increases DIMM to 64GB