计算机专业英语影印版(Computing Esntials 2008)课后答案大全——第八单元Chapter 8 Secondary Storage

更新时间:2023-07-06 03:20:10 阅读: 评论:0

Key Terms
prentation是什么意思霍金博士论文
Key Term
Definition
access speed (214)
Measures the amount of time required by the storage device to retrieve data and programs.
Blu-Ray (BD) (222)
A different optical format than either the DVD or the HD DVD and have a capacity of 25 to 50 gigabytes,
CD (compact disc) (220)
One of the most widely ud optical formats.
CD-R (CD-recordable) (220)
A CD that can be written to only once.
CD-ROM (compact disc–read only memory) (220)
A CD that cannot be written on or erad by the ur.
CD-ROM jukebox (228)
Provide automatic access to a large collection or library of optical disks.
CD-RW (compact disc rewritable) (221)
A CD that can be written to many times.  (See also erasable optical disc)
cylinder (216)
A part of a hard disk that runs through each track of a stack of platters.
density (215)
How tightly the bits (electromagnetic charges) can be packed next to one another on a diskette.
direct access (226)
The type of storage and retrieval system ud by magnetic and optical discs.
disk caching (219)
A hard disk performance enhancement that improves processing by acting as a temporary high-speed holding area between a condary storage device and the CPU.
DVD (digital versatile disc or digital video disc) (221)
a newer optical format that has replaced CDs as the standard; similar to CDs except that more data can be packed into the same amount of space.
DVD player (221)
DVD ROM drive
DVD +R (DVD recordable) (221)
A type of DVD write-once format
DVD -R (DVD recordable) (221)
A type of DVD write-once format
DVD-RAM (DVD random-access memory) (221)
A type of DVD rewriteable format
DVD-ROM (DVD–read only memory) (221)
A DVD format that the ur cannot write to
DVD-ROM jukebox (228)
Provide automatic access to a large collection or library of optical disks.
DVD +RW (DVD rewritable) (221)
A type of DVD rewriteable format
DVD -RW (DVD rewritable) (221)
A type of DVD rewriteable format
enterpri storage system (227)
A type of system that large organizations u to promote efficient and safe u of data across the networks within their organizations.
erasable optical disc (221)
A CD that can be written to many times.  (See also CD-RW (compact disc rewritable))
file compression (219)
A hard disk performance enhancement that increas storage capacity by reducing the amount of space required to store data and programs.
file decompression (219)
Rebuilding a file that has been compresd
file rver (228)
A dedicated computer with very large storage capacity that provides urs access to fast storage and retrieval of data.
flash memory card (223)
Credit card–sized solid-state storage devices widely ud in notebook computers.
floppy disk (214)
A portable or removable storage medium that us flat circular pieces of Mylar plastic that have been coated with a magnetic material.
floppy-disk cartridge (214, 215)
Portable storage devices that are able to store more information, and are thicker than a diskette. (e also high capacity disk)
floppy disk drive (FDD) (214)
Stores data and programs by altering the electromagnetic charges on the disk’s surface to reprent 1s and 0s
hard disk (216)
A device that saves files by altering the magnetic charges of the disk’s surface, has greater capacity than a diskette, and faster access time.
mathworks
hard-disk cartridge (217)
Easy to remove casttes who capacity is only limited by the number of cartridges.
hard-disk pack (218)
Removable storage device ud to store massive amounts of information.
HD DVD (high-definition DVD) (222)
country road take me homeThis format is very similar to DVD except that its storage capacity is much greater.
head crash (216)
When a hard disk’s read/write head makes contact with the hard disk’s surface or with particles on its surface resulting in a catastrophic loss of data.
hi def (high definition) (222)
The next generation of optical disc
high-capacity disk (215)
Portable storage devices that are able to store more information, and are thicker than a diskette. (e also floppy disk cartridge)
internal hard disk (216)
A magnetic condary storage device that is located inside the system unit.
Internet hard drive (226)
Special rvice sites on the Web provide urs with storage.
label (215)
Usually on the front of a diskette and provides urs with an area to write or document the contents of the disk.
land (220)
Flat areas that optical discs u to reprent 1s and 0s.
magnetic tape (226)
Writes data and programs by altering the electromagnetic charges on a recording surface and us a quential access method to store and retrieve it.
magnetic tape reel (227)
Type of tape that was ud by mainframes and is typically 1/2 inch wide and 11/2 miles long and provides massive storage capacity.
magnetic tape streamer (227)
The type of magnetic tape technology ud by mainframes today.
mass storage (227)
The tremendous amount of condary storage required by large organizations.
mass storage devices (227)
推特英文网Specialized high-capacity condary storage devices designed to meet storage requirements of large organizations.
media (214)
An actual physical material that holds data and programs.
optical disc (220)
A storage device that us a lar beam to alter the surface of a plastic or metallic disc to reprent data
optical disc drive (220)
A device with a lar that projects a tiny beam of light on a disc to reflect the light to determine a pit or land.
organizational Internet storage (228)
High-speed Internet connection to a dedicated remote organizational Internet drive site.
PC Card hard disk (217)
Credit card-size hard-disk cartridges available for
notebook computers with typical capacities
up to 5 gigabytes.
pit (220)
The bumpy areas that optical discs u to reprent 1s and 0s.
primary storage (214)
RAM or memory, where data is stored before being procesd.
RAID system (228)
A system that enhances organizational curity by constantly making backup copies of files moving across the organization’s networks.
redundant array of inexpensive disks (RAID) (219)
improve performance by expanding external storage, improving access speed, and providing reliable storage.
condary storage (214)
Provides permanent or nonvolatile storage
condary storage device (214)
Hardware where data and programs can be retained after the computer has been shut off. (e also storage device)
ctor (215)
A wedge-shaped ctions of a track, part of how files are stored and organized on a  flexible disk
quential access (226)
The type of storage and retrieval system ud by magnetic tape.
shutter (215)
Part of a diskette that slides to the side to expo the recording surface.
software engineer (228)
A computer professional who analyzes urs’ needs and creates application software.
solid-state storage (223)
Storage devices have no moving parts.
storage device (214)
Hardware where data and programs can be retained after the computer has been shut off. (e also condary storage device)
tape cartridge (227)
The type of magnetic tape technology ud by mainframes today
tape library (228)
A device that provides automatic access to data archived on a large collection or library of tapes.
track (215)
Rings of concentric circles without visible grooves, part of how files are stored and organized on a  flexible disk
USB drive (226)
The size of a key chain; the hard drives connect to a computer’s USB port enabling a transfer of files; has a capacity of 2GB.
write-protection notch (215)
A slide on a diskette that opens and clos. When clod, files can be saved to the disk. When open, files cannot.

Crossword Puzzle Answers:
Across
Num.
Clue
Answer
5
Improves hard-disk performance by anticipating data needs.
Disk caching
6
Web-bad storage.
Internet drive
7
Invisible wedge-shaped division of a track.
Sector
8
Portable and removable storage device.
Floppy
10
Runs through each track of a stack of platters.
Cylinder
11
How tightly the bits can be packed next to each other.
Density
Down
Num.
Clue
Answer
1
Ring of concentric circles without visible grooves.
Track
2
奥巴马辩论
Grouped disk drives treated as one hard disk by the computer system.
RAID
3
Measures the amount of time required to retrieve data.
Access time
4
Reprent 1s and 0s.
Pits and lands
9
Disk with 500 times the storage as a standard floppy.
Zip
Num
Multiple Choice Answers
Matching Answers
comforter
1
A
G
2
A
A
3
C
J
4
A
I
5
C
D
6
A
B
7
C
H
8
D
C
9
D
F
10
C
E
Open Ended Questions:
1. Discuss the traditional and high-capacity floppy disks.
The traditional floppy disk is the 1.44 MB 31/2-inch disk. The most common type is labeled 2HD, which means “two-sided, high-density” and have a capacity of 1.44 MB. Floppy disks have a thin exterior jacket made of hard plastic to protect the flexible disk inside.

High-capacity disks, also known as floppy-disk cartridges, are rapidly replacing the traditional floppy disk.  They are 31/2 inches in diameter, and are able to store more information, are thicker, and require special disk drives.

2. What are the three types of hard disks? Describe three ways to improve hard-disk performance.
There are three types of hard disks: internal hard disk, hard-disk cartridge, and hard-disk pack.


Three ways to improve the performance of hard disks are disk caching, redundant arrays of inexpensive disks, and file compression/decompression.  Disk caching improves processing by acting as a temporary high-speed holding area between a condary storage device and the CPU.  Redundant arrays of inexpensive disks (RAID) improve performance by expanding external storage, improving access speed, and providing reliable storage.  File compression and file decompression increa storage capacity by reducing the amount of space required to store data and programs.
3. What are the two most common optical disc formats? What is hi def? Describe the basic types for each format.
The two most common optical disc formats are CD and DVD.  The next generation of optical disc is called hi def (high definition), with a far greater capacity than DVDs. 

CDs, DVDs, and hi def have three basic types: read only, write once, and rewriteable.
4. Discuss solid-state storage, Internet hard drives, and magnetic tape. What are the advantages and disadvantages of each?

Solid-state storage devices have no moving parts.  While this type of storage is more expensive than the others, it is more reliable and requires less power.

Internet hard drives are special rvice sites on the Web that provide urs with storage.  Advantages of Internet hard drives include low cost and the flexibility to access information from any location using the Internet.  Disadvantages are access speed is slower becau all information must travel across the Internet, and urs are dependent on the availability and curity procedures of the rvice site.

Magnetic tape stores data and programs by altering the electromagnetic charges on a recording surface. One of the cheapest forms of condary.  However, it us quential access methods so it is one of the slowest to access specific information.  Magnetic tape
is an effective and commonly ud tool for backing up data.
固态存储设备没有移动部件。而这种类型的存储更昂贵的比其他的,更可靠,需要更少的力量。网络硬盘是特殊服务网站,为用户提供存储。网络硬盘的优点包括:低成本、灵活地使用互联网从任何位置访问信息。缺点是访问速度慢,因为所有的信息都必须穿越互联网,和用户依赖于服务的可用性和安全程序的网站。磁带存储数据和程序通过改变电磁记录表面的指控。最便宜的形式的中学之一。然而,它使用顺序存取方法,这是最慢的访问特定的信息。磁带是一种有效和常用工具备份数据
5. Discuss mass storage, enterpri storage systems, and mass storage devices.
Mass storage refers to the tremendous amount of condary storage required by large organizations.  Enterpri storage systems are systems that large organizations u to promote efficient and safe u of data across the networks within their organizations.    Mass storage devices are specialized high-capacity condary storage devices designed to meet organizational demands for data.

Focus
四级成绩身份证查询Applying Technology
Expanding Your Knowledge
Writing About Technology
Ethical
CD-R and Music Files
Web Tools
iPods and Music from the Internet
How Music Is Downloaded from the Internet
Internet Hard Drives
Software Tools
iPod
USB Storage
File Compression
Writing Skills
Storage Trade-offs
talentsEthical focus
1. Writing About Technology exerci #1 korea什么意思CD-R and Music Files looks at the distribution of music on the Internet and the ethical problem of copying music that isn’t freely distributed.

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