RAM

Question 1

ROM

Answer 1

Read Only Memory - Can only be read

Question 2

PROM

Answer 2

Programable read only memory - can be programmed / written once.

Question 3

EPROM

Answer 3

Erasable PROM , can be erased and written again

Question 4

EEPROM

Answer 4

Flash memory

Question 5

SRAM

Answer 5

Static RAM, docent need refreshing (very expensive) used often in processor cache memory.

Question 6

DRAM

Answer 6

Dynamic RAM , Requires a constant refreshing to maintain data.

Question 7

SDRAM

Answer 7

Synchronous with the common system clock (most common)

Question 8

DDR

Answer 8

Double Data Rate, twice the data rate of SDRAM used often in processor cache.

Question 9

DDR2

Answer 9

2x the bus clock multiplier of DDR

Question 10

DDR3

Answer 10

4x the bus clock multiplier of DDR

Question 11

How do you work out the peak transfer rate of RAM?

Answer 11

times the Data rate x 8

Question 12

Parity memory

Answer 12

additional parity bit, can’t correct and error

Question 13

ECC Memory

Answer 13

Detects errors & corrects on the fly, (used ideally for servers)

Question 14

Multichannel memory

Answer 14

Installed in pairs or trios for maximum throughput, each memory channel has identical colours.

Question 15

SDRAM DIMM Pin-count?

Answer 15

168pin

Question 16

DDR DIMM Pin-count?

Answer 16

184pin

Question 17

DDR2 DIMM Pin-count?

Answer 17

240pin

Question 18

DDR3 DIMM Pin-count?

Answer 18

240pin

Question 19

RDRAM RIMM Pin-count?

Answer 19

184pin and 232pin

Question 20

SDRAM SODIMM Pin-count?

Answer 20

144pins and 100pins

Question 21

DDR SODIMM Pin-count?

Answer 21

200pins

Question 22

DDR2 SODIMM Pin-count?

Answer 22

200pins

Question 23

DDR3 SODIMM Pin-count?

Answer 23

204pins