CompTIA A+ 1101 Memory

Question 1

• 64 bit data width
• electrical contacts are different on each side

Answer 1

DIMM (Dual Inline Memory Module)

Question 2

• used in laptops and mobile devices
• almost half the length of a DIMM

Answer 2

SO-DIMM (Small Outline DIMM)

Question 3

• the memory on a DIMM (the black components)
• dynamic (needs constant refreshing)
• random access (any storage location can be accessed directly)

Answer 3

DRAM (Dynamic Random Access Memory)

Question 4

• synchronous with the system clock

Answer 4

SDRAM (Synchronous DRAM)

Question 5

• twice the data rate of DDR2, and a larger chip capacity
• no backwards compatibility

Answer 5

DDR3 SDRAM

Question 6

• speed increases over DDR3
• maximum size of 64 GB per DIMM
• no backwards compatibility

Answer 6

DDR4 SDRAM

Question 7

• faster data transfers than previous DDR SDRAM versions
• maximum size of 64 GB per DIMM
• no backwards compatibility

Answer 7

DDR5 SDRAM

Question 8

• in Windows, configure in “Performance Options”
• an area of your HDD or SSD that Windows can use as if it were actual memory
• slower than RAM
• can be automatically managed by the OS, with some configuration settings available

Answer 8

Virtual Memory

Question 9

• increases throughput by spreading the load across multiple memory modules
• memory combinations should match

Answer 9

Multi-Channel Memory

Question 10

• adds an additional parity bit
• won’t always detect an error
• can’t correct an error

Answer 10

Parity Memory

Question 11

• detects errors and corrects them
• not compatible with all systems
• looks the same as non ECC memory

Answer 11

ECC (Error Correcting Code) Memory