System Memory

Question 1

Used to load applications and files into a non-persistent and fast storage area

Answer 1

RAM (Random Access Memory)

Question 2

High-speed memory

Answer 2

Cache

Question 3

Mass storage device that holds more data but is slower than a cache (such as hard drives, USB drives, and DVD)

Answer 3

Storage

Question 4

Pulls the files from the disc into memory and replaces the old file

Answer 4

Disk Cache

Question 5

Processor reaching the files inside RAM

Answer 5

Addressing Memory

Question 6

32-bit (x86) processor RAM GB max limit

Answer 6

4 GB

Question 7

Can put any size of module in any slot
(such as a 4GB and a 8GB making 12GB)

Answer 7

Single Bank

Question 8

Requires installation of banks in pairs
(such as a 4GB and 4 GB making 8GB)

Answer 8

Paired Bank

Question 9

DDR stand for?

Answer 9

Dual Data Rate

Question 10

DDR types (3)

Answer 10

DDR3
DDR4
DDR5

Question 11

Calculated based on the bus speed and the width of the data bus

Answer 11

Throughput

Question 12

Oldest type of memory that requires frequent refresh (dynamic storage cell)

Answer 12

DRAM (Dynamic RAM)

Question 13

Solved the issue of the constant refresh in DRAM, but was expensive

Answer 13

SRAM (Static RAM)

Question 14

First memory module that operates at the same speed as the motherboard bus

Answer 14

SDRAM (Synchronous DRAM)

Question 15

Doubles the transfer speed of an SRAM module (184-pin connector)

Answer 15

DDR SDRAM
(Double Data Rate Synchronous Dynamic RAM)

Question 16

Higher latency and has faster access to the external bus (240-pin connector)

Answer 16

DDR2 SDRAM
(Double Data Rate 2 Synchronous Dynamic RAM)

Question 17

Runs at a lower voltage and at a higher speed than DDR2 (240 keyed pin connector)

Answer 17

DDR3 SDRAM
(Double Data Rate 3 Synchronous Dynamic RAM)

Question 18

DDR version that has 6.4 to 17 GB/s of throughput 8GB per module

Answer 18

DDR3

Question 19

DDR version that has 12.8 to 25.6 GB/s of throughput 32GB per module

Answer 19

DDR4

Question 20

DDR version that has 38.4 to 51.2 GB/s of throughput 128GB per module

Answer 20

DDR5

Question 21

What are the 2 things to be aware of when it comes to buying memory modules for your motherboard?

Answer 21

1) Speed
2) Keying

Question 22

True or False? A mix and match of modules is possible with the same type with different speeds

Answer 22

True

Question 23

Classified as DDR3, DDR4, or DDR5 for a laptop (smaller device)

Answer 23

SODIMM
(Small Office Dual In-line Memory Module)

Question 24

Uses two different memory modules to increase the performance and throughput

Answer 24

Multi-Channel Memory

Question 25

4 types of memory channels

Answer 25

1) Single-channel 2) Dual-channel 3) Triple-channel 4) Quad-channel

Question 26

Memory channel that uses one memory module on one bus (64-bit data bus)

Answer 26

Single-Channel

Question 27

Memory channel that requires 2 memory modules and 2 memory slots on the motherboard (128-bit data bus)

Answer 27

Dual-Channel

Question 28

Memory channel that uses 3 memory modules and 3 memory slots (192-bit data bus)

Answer 28

Triple-Channel

Question 29

Memory channel that uses 4 memory modules and 4 memory slots (256-bit data bus)

Answer 29

Quad-Channel

Question 30

Why are multiple modules beneficial? (2)

Answer 30

1) Faster speeds 2) Adds memory for storage

Question 31

Standard memory that does not check errors and allows data to be put in or taken out at will

Answer 31

Non-Parity Memory

Question 32

Performs basic error checking and ensures the memory contents are reliable and have integrity

Answer 32

Parity Memory

Question 33

ECC stand for?

Answer 33

Error Correcting Code

Question 34

Detects and corrects an error

Answer 34

ECC (Error Correcting Code)

Question 35

Additional hardware (register) between memory and CPU

Answer 35

Buffered / Registered Memory

Question 36

Space on a hard drive that is allocated by the OS and pretends to be memory

Answer 36

Virtual Memory / Page File

Question 37

What is Virtual Memory referred to as on a Windows vs. Linux/Mac system?

Answer 37

Page file (Windows) Swap Space (Linux Unix/Mac)

Question 38

You are building a new server and want to ensure that its memory can allow the server to continue working even if there is an issue that corrupts data held within the memory modules. Which of the following types of memory should you select for the server? a) Non-parity b) Single-channel c) ECC d) Dual-channel

Answer 38

**c) ECC** *ECC memory is designed to detect and correct errors in data stored in memory, which helps ensure that data corruption doesn't cause the system to crash or produce incorrect results. This is especially important in servers and critical systems, where reliability and data integrity are paramount.* *The other options are not ideal for this scenario: a) Non-parity memory doesn't have the error-detecting or error-correcting capabilities of ECC, so it cannot automatically correct any errors that might occur. b) Single-channel and d) Dual-channel refer to how the memory modules are configured to communicate with the memory controller. While dual-channel memory can improve performance by increasing bandwidth, it doesn't offer any data protection like ECC does. In summary, ECC memory is the best choice for ensuring that your server can handle memory errors without risking data corruption.*

Question 39

You are troubleshooting a workstation with four identical memory sticks installed, one in each of the slots labeled 1, 2, 3, and 4. The motherboard has a marking near the memory slots that says, "quad-channel support." Based on what you observe, how many channels are being used by the motherboard's memory? a) One channel b) Two channels c) Three channels d) Four channels

Answer 39

d) Four channels

Question 40

Which of the following types of memory relies on temporary storage space on the hard drive that is used when there is insufficient physical memory available to perform a given task? a) VRAM b) SODIMM c) Virtual Memory d) ECC

Answer 40

**c) Virtual Memory** *Virtual memory is an area on the hard disk allocated to contain pages of memory. When the operating system doesn't have sufficient physical memory (RAM) to perform a task, pages of memory are swapped to the paging file. This frees physical RAM to enable the task to be completed. When the paged RAM is needed again, it is re-read into memory. VRAM (video RAM) refers to any type of random access memory (RAM) specifically used to store image data for a computer display.*