Review Questions

1.	The two most common types of hard drives are:
2.	True or false: IDE drives require a separate IDE adapter for installation.
3.	You can easily identify an IDE hard drive because it uses a ______ -pin adapter.
4.	You can easily identify a SCSI hard drive because it uses a ______ -pin adapter.
5.	Which drive type typically offers better performance, IDE or SCSI?
6.	What is the difference between a physical drive and a logical drive?
7.	Define volume set.
8.	List three disk drive configurations that are fault tolerant.
9.	What is the difference between disk mirroring and disk duplexing?
10.	True or false: If two drives in a stripe set with parity fail, you can still recover the stripe set if it consists of six or more drives.
11.	True or false: In a drive configured as a stripe set with parity, all the partitions within the stripe set must be the same size.
12.	What is the difference between online and offline storage?
13.	How much data can be stored on a CD?
14.	What is the advantage of using a SuperDisk or HiFD floppy disk over a removable disk?
15.	Why might DVD replace CD-ROM technology?
16.	True or false: You should keep all floppy disks away from any magnetic field.

Answers

1.	IDE, SCSI
2.	False. IDE drives can use either the controller that is integrated with most motherboards or a simple paddleboard, which facilitates the connection but is not considered an adapter.
3.	40
4.	50
5.	SCSI
6.	A physical drive is the physical drive itself; for example, drive 0 or drive 1 in a two-drive configuration. A logical drive is based on how you partition your physical drive and is assigned a logical drive letter, for example, C.
7.	A volume set is two or more partitions that have been combined into a single logical drive.
8.	Disk mirroring (including duplexing); disk striping with a parity stripe; disk striping with a parity drive
9.	Disk mirroring uses a single controller and two drives to mirror data. Disk duplexing uses two controllers and two drives to mirror data.
10.	False. You can regenerate a stripe set only if a single drive fails. If two or more drives fail, you must restore data from the most recent backup.
11.	True
12.	Online storage is available without any user intervention. Offline storage requires the user to access the data from media that is not immediately accessible.
13.	640MB
14.	SuperDisk and HiFD are backward compatible with 1.44MB floppy disks.
15.	A DVD holds 13 times the amount of data as a CD, enabling DVDs to store several high-quality, full-length digital movies. Also, DVD players are backward compatible with CDs.
16.	True