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A+ Sections 1-27 1011 > Section 5 - System Memory > Flashcards

Section 5 - System Memory Flashcards

1
Q

What is Random Access Memory (RAM) used for

A

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

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2
Q

What is a mass storage device

A

Permanent storage area

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3
Q

Define
RAM / System Memory

A

Temporary storage area/ non persistant

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4
Q

What is disk cache’s function

A

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

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5
Q

What does a mechanical system use

A

An electronic system that can access the RAM with instant speed

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6
Q

Explain Addressing Memory

A

Processor reaching the files inside RAM

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7
Q

32-bit (x86)

A

4(2^32) billion address locations (4gb of data)

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8
Q

64-bit (x64)

A

184 quintillion address locations (16 EB(Exabytes) of data)

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9
Q

What is the max ram a x86 aka 32-bit processor can address

A

4GB

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10
Q

What is the max ram a x64 aka 64-bit processor can address

A

> 4GB of RAM

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11
Q

Explain Single Bank (RAM)

A

Any size modules in any slot

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12
Q

Explain Paired Bank (RAM)

A

Requires installation of bank in pairs

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13
Q

RAM Versions (Abbreviation)

A

DDR3,4,5(Dual Data Rate)

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14
Q

What bus speed does PC133 run at

A

133 MHz

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15
Q

Explain throughput in regards to ram

A

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

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16
Q

Explain Dynamic RAM (DRAM)

A

Oldest type of memory that requires frequent refresh

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17
Q

Explain Static RAM (SRAM)

A

Solved the issue of the constant refresh, but it was expensive

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18
Q

DRAM Storage characteristic

A

It is dynamic

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19
Q

What speed does the PC166 Bus have

A

166 MHz

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20
Q

What speed doe the PC266 Bus use

A

266 MHz

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21
Q

Double data rate synchronous dynamic random-access memory (DDR SDRAM)

A

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

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22
Q

Double data rate 2 synchronous dynamic random-access memory (DDR2 SDRAM)

A

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

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23
Q

Double data rate 3 synchronous dynamic random-access memory (DDR3 SDRAM)
2 Improvements

A

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

24
Q

What is DDR3’s throughput

A

6.4 to 12.8 GB/s with a max module size of 8GB/module n max

25
Q

What is DDr4’s throughput

A

12.8 to 25.6 GB/s, 32GB/module max

26
Q

What is DDR5’s throughput

A

25.6 to 51.2 GB/s of throughput max of 128GB/module

27
Q

Explain mix and matching of modules in terms of RAM

A

It’s possible provided its the same type, the speed doesn’t HAVE to be the same

28
Q

Explain mix and matching for multiple modules

A

Buy them in pairs with same brand, speed and throughput

29
Q

Explain what Small Outline Dual In-Line Memory Module is (SODIMM)

A

still classified as DDR3,4,5

30
Q

Explain SODIMM PC4-16000 in terms of speed

A

16000 MB/s AKA 16GB/s

31
Q

What does Multi-Channel Memory do

A

The use of multiple memory sticks working together

32
Q

EXplain Single channel memory

A

64-bit data bus

33
Q

Explain Dual-channel memory

A

128-bit data bus

34
Q

What does interleaving result in

A

increased performance

35
Q

Explain Triple-Channel memory

A

Using 3 sticks resulting in a 192-bit data bus

36
Q

What are the most commonly used ram-channels

A

single,dual,triple,quad

37
Q

What should you do before implementing ramp into your motherboard and why

A

Check the motherboard’s manual as just because your board has 4 slots, doesn’t mean it can go up to quad, may just be dual

38
Q

What is considered best practice in multi-channel configs?

A

using the same model, speed and throughput of memory

39
Q

What do multiple modules allow for

A

Faster speeds and additional memory for storage

40
Q

Explain Non-parity memory

A

Standard memory that doesn’t check for errors and allows data to be put in or taken out

41
Q

Explain Parity memory

A

Performs basic error checking and ensures the memory contents are reliable (slower than non-parity)

42
Q

What does it mean if memory does a parity check

A

Does a basic calculation

43
Q

What does every byte have

A

An associated parity bit

44
Q

What does an odd number refer to

A

1 Parity bit

45
Q

What does an even number refer to

A

0 parity bit

46
Q

Explain Error correcting code (ECC)

A

Detects and corrects an error

47
Q

Explain Buffered / Registered Memory

A

Additional hardware (register) between memory and CPU

48
Q

What does the system require to reduce electrical load

A

Buffering or registering to use on the data

49
Q

What components need to support ECC for it to be used

A

CPU & Motherboard

50
Q

What does DDR5 have compared to its predecessors

A

Some level of internal error checking (Different form of error checking)

51
Q

What forms of DDR5 can be sold

A

ECC or Non-ECC

52
Q

Explain Virtual Memory/Page file

A

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

53
Q

What are the 2 types of virtual memory

A

windows : page file linux,unix,mac: swap space

54
Q

A page file/swap space is

A

hidden on a storage device and pretends to be system memory

55
Q

What will the the OS do to processes

A

Assign memory locations to different processes in 4KB-size chunks

56
Q

PC5-42000 (DDR5 Module)

A

42000MB/s
42GB/s

A+ Sections 1-27 1011 (27 decks)

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