Chapter 4: Personal Computer Components

Question 1

Describe data storage capacity

Answer 1

Bits, Bytes, Kilobytes, Megabytes, Terabytes

Question 2

Describe speed of Electronics

Answer 2

Hertz, Kilohertz, Megahertz, Gigahertz

Question 3

RAM/ROM which is volatile/nonvolatile

Answer 3

RAM is volatile needs power to maintain data

ROM is nonvolatile does not need power to maintain data

Question 4

ECC

Answer 4

Error Correcting Code- Uses extra bits and algorithms to detect and correct errors

Question 5

DIMM

Answer 5

Dual Inline Memory Module- dual or single sided RAM slot

Question 6

SRAM

Answer 6

Very fast and expensive used for cache memory

Question 7

DRAM

Answer 7

Slower and cheaper than SRAM, has a higher capacity and is the main memory on the computer

Question 8

VRAM

Answer 8

Specialized RAM for video adapters

Question 9

Riser Card (daughter card)

Answer 9

Used to expand a computers bus and allow the insertion of other cards

Question 10

Riser Card ( AMR/CNR)

Answer 10

A small expansion card containing multiple functions

Question 11

Three categories for mass storage devices

Answer 11

Magnetic, optical, and solid state drives

Question 12

Types of magnetic disk drives

Answer 12

Floppy disk drives, Hard disk drives, and tape drives

Question 13

Types of optical drives

Answer 13

CD, DVD, and Blu-ray

Question 14

Solid State Drives

Answer 14

Have no moving parts and use large capacity nonvolatile memory

Question 15

Hot swapping

Answer 15

Connecting or disconnecting drives without shutting down the the system

Question 16

Types of hot-swappable devices

Answer 16

USB, Fire wire, SATA, eSATA,

Question 17

RAID

Answer 17

a group of schemes designed to provide either better performance or improved data reliability through redundancy

Question 18

RAID 0 (performance)

Answer 18

Striped set without parity gives improved drive read write speeds

Question 19

RAID 1 (Redundancy)

Answer 19

Provides fault tolerance because all data is written identically to the two drives in a mirrored set

Question 20

RAID 5

Answer 20

Data is written in a striping pattern on three different hard drives and uses an algorithm to rewrite the data if a drive loses data

Question 21

RAID 10 ( performance and redundancy)

Answer 21

Uses the mirror and striping methods to save data, requires four hard drives

Question 22

DDR1 SDRAM

Answer 22

Double data rate doubled the speed of SDRAM by accessing the module clock twice per clock cycle

Question 23

DDR2 SDRAM

Answer 23

Can handle faster clock rates than DDR1

Question 24

DDR3 SDRAM

Answer 24

Uses less power while providing twice the bandwidth

Question 25

MCC

Answer 25

Memory controller chip- controls the main memory on a motherboard

Question 26

RS-232-C

Answer 26

I/O device that transfers data serially ( over long distances) one bit at a time

Question 27

Capture card

Answer 27

Type of adapter used to record video signals to a PC’s hard drive