Chapter 2

Question 1

3 Components of Hard Drive

Answer 1

Hard Disk, Host Adapter, Controller

Question 2

IDE devices supported by single IDE channel

Answer 2

2

Question 3

Distance Serial ATA (SATA) cables can extend to

Answer 3

1 Meter

Question 4

What does RAID stand for

Answer 4

Redundant Array of Independent Disks

Question 5

RAID 0

Answer 5

Disk Stripping

Equal space from two drives used to create larger volume

One drive can read while the other is moving –> faster data access

Question 6

RAID 1

Answer 6

Disk Mirroring

Fault tolerance (data written simultaneously to two seperate drives)

Duplexing means seperate host adapter used for 2nd drive

Only two drives can be used

Question 7

RAID 5

Answer 7

Combine benifit of 0 and 1

Use parity when writting so data not lost if disk goes down

Minimum 3 disks required –> one for redundancy

Question 8

Raid 3 and 4

Answer 8

Place all parity on single drive

Question 9

RAID 6

Answer 9

Like RAID 5 but can loose two disks

Min 4 disks are required

Question 10

RAID 10

Answer 10

Combines 1 and 0

Minimum 4 disks

Half of storage is for mirroring

Question 11

SATA data transfer rate

Answer 11

150 MB PS

Question 12

Wires in ATX power supply connector to mother board

Answer 12

20

Question 13

CD Capacity

Answer 13

700MB

Question 14

DVD Single Sided Single Layer

Answer 14

4.7GB

Question 15

DVD DoubleSided Single layer

Answer 15

9.4 GB

Question 16

DVD SingleSided Dual layer

Answer 16

8.5

Question 17

DVD DoubleSided DoubleLayer

Answer 17

17.1 GB

Question 18

BlueRay Disk Single Sided Single Layer

Answer 18

25

Question 19

BlueRay Disk Single Sided Double Layer

Answer 19

50GB

Question 20

BlueRay Disk Double Sided Double Layer

Answer 20

100GB