The Answer of Chapter 7

True/ false

1.  T
2.  F
3.  F
4.  F
5.  F
6.  F
7.  F
8.  T
9.  F
10. T
11. F
12. F
13. F

Multiple Choice

1. B
2. C
3. D
4. D
5. A
6. C
7. B
8. B

Matching

1.  H
2.  C
3.  A
4.  E
5.  F
6.  J
7.  D
8.  B
9.  I
10. G

Short Answer

1. - Network attached storage is a server connected to a network with the sole purpose of providing storage.
   - With the introduction of smaller, less expensive NAS devices, however, some home and small business users opt to add up to 6 TB or more of hard disk storage space to their network with a NAS device.

2. - Advantages of SAS over parallel SCSI include thinner, longer cables; reduced interference; less expensive; support for many more connected devices at once; and faster speeds.
   - SAS interfaces usually are compatible with devices that have parallel SCSI and SATA interfaces.

3. - Single-session disc manufacturers write all items on the disc at one time. Multisession means you can write on part of the disc at one time and another part at a later time.
   - An archive disc stores photos from an online photo center in the jpg file format, usually at a maximum resolution of 7200 pixels per photo.Picture CDs stores digital versions of film using a jpg file format at a lower resolution, typically 1024 × 1536 pixels.

4. - Memory cards enable mobile users easily to transport digital photos, music, or files to and from mobile devices and computers or other devices.
   - CompactFlash (CF), Secure Digital (SD), Secure Digital High Capacity (SDHC), microSD, and micro SDHC.
a. CompactFlash (CF) used in Digital cameras, smart phones, PDAs, photo printers, portable media players, notebook computers, desktop computers.
b. Secure Digital(SD) used in Digital cameras, digital video cameras, smart phones, PDAs, photo printers, portable media players.
c. SDHC used in Digital cameras.
d. microSD used in Smart phones, portable media players, handheld game consoles, handheld navigation devices.
e.microSDHC used in Smart phones, portable media players, handheld game consoles, handheld navigation devices.

5. - Microfilm is a 100- to 215-foot roll of film. Microfiche is a small sheet of film, usually about 4x6 inches.
   - Some large organizations use microfilm and microfiche to archive inactive files. Some banks use them to store transactions and canceled checks. The U.S. Army uses them to store personnel records.