220-1101 Hardware 3.2

Question 1

What is RAM?

Answer 1

Random Access Memory(RAM). Used to load applications and files into a non-persistent and fast storage area. One of the best ways to improve your computer system’s performance.

Question 2

Random Access Memory(RAM)/System Memory

Answer 2

Temporary storage area/non-persistent storage

Question 3

Disk Cache

Answer 3

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

Question 4

Mechanical System

Answer 4

Uses an electronic system that can access the RAM with instant speed

Question 5

Addressing Memory

Answer 5

Processor reaching the files inside RAM.

Question 6

Addressing with 32-bit(x86)

Answer 6

4 billion address locations (4GB of data). And x86 or 32-bit processor can address a maximum of 4GB of RAM.

Question 7

Addressing with 64-bit(x64)

Answer 7

184 quintillion address locations (16EB of data). An x64 or 64-bit processor can access more than 4GB of RAM (8,16, 32 or 64GB)

Question 8

Safe Practice before buying memory?

Answer 8

Check your motherboard’s user manual to figure out the type, size, keying, and speed of memory your motherboard can use.

Question 9

Single Bank

Answer 9

Seen on most modern motherboards. Where you can put any size of module in any slot.

Question 10

Paired Bank

Answer 10

Seen mostly on old motherboards where they required installation of banks in pairs.

Question 11

Different versions of Dual Data Rate?

Answer 11

DDR3, DDR4, DDR5

Question 12

Throughput in terms of memory

Answer 12

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

Question 13

Types of RAM

Answer 13

Dynamic RAM(DRAM), Static RAM(SRAM), Synchronous DRAM(SDRA),DDR SDRAM, DDR2 SDRAM, DDR3, DDR4, DDR5 SDRAM, SODIMM

Question 14

Dynamic RAM(DRAM)

Answer 14

Oldest type of memory that requires frequent refresh. DRAM storage cell is dynamic meaning it needs to be refreshed often.

Question 15

Static RAM(SRAM)

Answer 15

Solved the issue of constant refresh, but was expensive.

Question 16

Synchronous DRAM(SDRAM)

Answer 16

First memory module that operates at the same speeds as the motherboard bus.

Question 17

Types of SDRAM

Answer 17

PC66( 66 MHz bus), PC133( 133 MHz bus), PC266( 266 MHz bus)

Question 18

Double Data Rate Synchronous Dynamic Random-Access Memory(DDR SDRAM)

Answer 18

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

Question 19

Double Data Rate 2 Synchronous Dynamic Random-Access Memory(DDR2 SDRAM)

Answer 19

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

Question 20

Double Data Rate 3 Synchronous Dynamic Random-Access Memory(DDR3 SDRAM)

Answer 20

Runs at a lower voltage and at higher speed than DDR2 (240 keyed pin connector). Throughput is 6.4 to 17 GB/s with a maximum module size of 8GB per memory module.

Question 21

Double Data Rate 4 Synchronous Dynamic Random-Access Memory(DDR4 SDRAM)

Answer 21

Has a throughput of 12.8 to 25.6 GB/s of throughput 32 GB per module. PC4-16000(DDR4 module) 16000 MB/s of 16GB/s

Question 22

Double Data Rate 5 Synchronous Dynamic Random-Access Memory(DDR5 SDRAM)

Answer 22

Has a throughput of 38.4 to 51.2 GB/s of throughput 128 GB per module. PC5-42000 (DDR5 module) 42000 MB/s of 42 GB/s

Question 23

Small Outline Dual In-line Memory Module (SODIMM)

Answer 23

Still classified as DDR3, DDR4, or DDR5. SODIMM is the small form factor RAM/memory that you find in laptops.

Question 24

Multi-channel Memory

Answer 24

Uses two different memory modules to increase the performance and throughput. Multi-Channel Memory gives way to interleaving which gives your system increased performance. Multiple modules give faster speeds and add memory for storage.

Question 25

Types of Memory Channels

Answer 25

Single, Dual, Triple, Quad

Question 26

Single Channel

Answer 26

Uses one memory module on one bus (64-bit data bus)

Question 27

Dual-Channel

Answer 27

Requires two memory modules and two memory slots on the motherboard (128-bit data bus). Dual-Channel creates interleaving.

Question 28

Triple-Channel

Answer 28

Uses three memory modules and three memory slots(192-bit data bus)

Question 29

Quad-Channel

Answer 29

Uses four memory modules and four memory slots(256-bit data bus).

Question 30

Error Correcting Code

Answer 30

Detects and corrects an error.

Question 31

Non-Parity Memory

Answer 31

Standard memory that does not check for errors and allows data to be put in or taken out. This is what most memory is.

Question 32

Parity Memory

Answer 32

Performs basic error checking and ensures the memory contents are reliable. Seen a lot in high-end builds and servers.

Question 33

Parity Check

Answer 33

Is a basic calculation to verify if data is good or not. If the data is good is uses it and if the data is not good an error will occur. Every byte has an associated parity bit.

Question 34

Buffered/Registered Memory

Answer 34

Additional hardware (register) between memory and CPU. The system requires buffing or ride. The system requires butting or registering the data to reduce.

Question 35

Virtual Memory/Page File

Answer 35

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

Question 36

Types of Virtual Memory

Answer 36

Page File(Windows), and Swap Space(Linux Unix/Mac). A page file or swap space are hidden on a storage device and pretends to be system memory.