计算机科学引论答案

Computing Essentials 2008练习答案

Chapter 1: Information Technology, The Internet, and You

Crossword Puzzle Answers:

Across

Num. Clue Answer

1 The most essential part of an information system. People

7 Coordinates computer resources. Operating System

10 Modifies signals for processing. Modem

12 Data that has been processed by the computer. Information

13 Unprocessed facts. Data

14 Notebook computer that accepts handwritten input.. Tablet PC

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Num. Clue Answer

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2 Uses computers to become more productive.

End User

3 Rules or guidelines to follow when using software, hardware, and data.

Procedures

4 Created by word processors.

Document Files

5 Specialized programs that allow input and output devices to communicate.

Device Drivers

6 Created by database management programs.

Database Files

8 The physical equipment of a microcomputer.

Hardware

9 The world’s largest computer network.

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Internet

13 Provides step-by-step instructions to the computer.

Software

Multiple Choice Answers

B B A B D D A C D D

Matching Answers

E F I H A C G B D J

Chapter 2: The Internet, The Web, and Electronic Commerce

Crossword Puzzle Answers:

Across

Num. Clue Answer

2 Provide users a connection to the Internet. ISP

3 Unwelcome e-mail. Spam

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5 Explore the Web. Surf

7 Internet uploading and downloading service. FTP

8 Steals credit card information. Carder

9 A file, such as a document or worksheet, that is attached to an e-mail message. Attachment

10 Involves the sale of a product to another business. B2B

13 Connection to Web resources. Link

15 Process of transferring information from a remote computer to the

Download

computer one is using.

Down

Num. Clue Answer

1 The sites that a search engine returns after running a keyword search.

Hits

4 Special program written in Java. Applet

5 Locates information online. Search Engine

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6 Location of Web resource. URL

11 Program that provides access to Web Browser

12 Used to block certain sites. Filter

14 Provides high-speed connection using existing telephone lines. Num Multiple Choice Answers

D A C C A A A A D B

Matching Answers

i d g e f c h j a b

Chapter 3: Basic Application Software

Crossword Puzzle Answers:

Across

Num. Clue Answer

4 Rectangular area that contains messages. Window

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.

DSL5 System to organize and retrieve data. DBMS

8 Collection of individual applications. Software Suite

10 Rearrange records using a field. Sort

11 Formed by intersection of row and column. Cell

14 Collection of related data. Database

16 Flyer, report, newsletter, Web page. Document

17 These make up a presentation. Slides

18 Question or request for data in a database. Query

Down

Num. Clue Answer

1 List of commands. Menu

2 Rectangular grid of rows and columns used in programs

Worksheet

3 Has records and fields. Table

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Excel.like .

6 Controls format and placement of slides. Master Slide

7 Requests user input. Dialog Box

9 Moves insertion point to next line. Word Wrap

12 Series of cells. Range

13 A vertical block of cells one cell wide. Column

15 Contain buttons and menus. Toolbars

Num Multiple Choice Answers

D D B D D A B B C D

Matching Answers

j a c h b d i e g f

Chapter 5: System Software

Crossword Puzzle Answers:

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Num. Clue Answer

5 Program that makes copies of files in case of damage or loss. Backup

6 Boot that occurs when the computer is already on. Warm boot

8 Combination of several utility programs in one package. Utility Suite

9 Allows communication between devices and the operating system. Driver

11 Concentric rings on a disk. Tracks

12 Used to control and coordinate networked computers. NOS

Down

Num. Clue Answer

1 Location to store related files. Folder

2 Computer that coordinates all communication between other computers.

Network server

3 Uses graphical elements to communicate with the operating system.

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GUI

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4 Broken-up file stored in different sectors. Fragmented

5 Starting or restarting a computer. Booting

7 Operating system with over 80 percent of the market. Windows

10 Graphic objects on the desktop used to represent programs and other

files. Icons

Num Multiple Choice Answers

C D C A A A C B B A C

Matching Answers

j d f b g h a e i c

Chapter 7: Input and Output

Crossword Puzzle Answers:

Across

Num. Clue Answer

6 Used to grade multiple choice exams. OMR

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9 Specialized digital camera that broadcasts images over the Internet.

WebCam

10 Records images digitally on a disk. Digital camera

13 Most popular input device used for computer games. Joystick

14 Delivers much clearer picture than regular TV. HDTV

16 Resolution is expressed as a matrix of these dots. Pixel

17 Keyboard that rolls up for storage and transport. Flexible

Down

Num. Clue Answer

1 The distance between each pixel. Dot pitch

2 Most commonly used way to input data. Keyboard

3 Button rotated to scroll through information displayed on the monitor.

Wheel Button

4 Most widely used type of mouse. Mechanical

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5 Type of terminal that does no processing. Dumb

7 Number of times a screen is redrawn each second. Refresh rate

8 Measure of resolution. dpi

11 Keys that turn features on and off. Toggle

12 Translates processed information into hard copy. Printer

15 Bar code system used in supermarkets. UPC

Num Multiple Choice Answers

A B A B D A D C D B

Matching Answers

i e f j a b g d c h

Chapter 9: Communications and Networks

Crossword Puzzle Answers:

Across

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Num. Clue Answer

5 Interprets and routs incoming radio frequencies. Base station

7 Continuous electronic waves. Analog

9 Configuration of a network. topology

10 Network interface card. NIC

11 Transfer speed or transfer rate. bps

12 Short range wireless communication standard. bluetooth

14 Measurement of the width of the communication channel. bandwidth

Down

Num. Clue Answer

1 Node that requests and uses resources available from other nodes. client

2 Each device in the network handles its own communications. Bus network

3 Device that allows links between LANs. Network gateway

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4 Process that converts digital to analog. modulation

6 Pieces of a message sent over the Internet. packets

8 Global positioning system. GPS

13 Any device that is connected to a network. node

15 Uses existing telephone lines to provide high-speed

DSL

16 Central node for other nodes. hub

Num Multiple Choice Answers

C B A D C D B B D D

Matching Answers

g b a i h e c j d f

Chapter 11: Information Systems

Crossword Puzzle Answers:

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connections.

.

Num. Clue Answer

3 Level of management concerned with strategic planning. Top

5 Identifies, investigates, and develops new products and services. Research

9 Report produced upon request. Demand

10 Someone who makes decisions in a DSS. User

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Model that helps middle-level managers in long-range planning.

Tactical

12

Information worker involved in the creation of information.

Knowledge worker

14 Concerned with calculating employee paychecks. Payroll

16 Specialized information system that knowledge workers use. KWS

17 Keeps track of summaries of all foregoing transactions. General ledger

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Num. Clue Answer

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1 The buying of materials and services. Purchasing

2 Plans, prices, promotes, sells, and distributes goods and services.

Marketing

4 Form that shows supply and order information. Purchase order

6 Report that calls attention to unusual events. Exception

7 Help top-level managers oversee operations and develop plans. ESS

8 Information worker that distributes information. Data worker

13 Use data from TPS to support middle managers. MIS

15 Level of management concerned with decision making. Middle

Num Multiple Choice Answers

B B A D D A C C CC B

Matching Answers

h j f d g b a c i e

Chapter 13: Systems Analysis and Design

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Crossword Puzzle Answers:

Across

Num. Clue Answer

3 Systems implementation Conversion

8 Collection of activities and elements organized to accomplish a goal.

System

9 Build a model that can be modified before the system is installed.

Prototyping

10 Automated design tool. CASE

12

Pilot

Approach where new system is tried in only one part of an organization.

14

Shows levels of management and formal lines of authority.

Organization chart

15 List of questions. Checklist

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Num. Clue Answer

1 1st step in the design phase. Feasibility

2 Study an organization’s systems. Systems analysis

4 System’s performance is compared to the original specifications.

System audit

5 Approach where new system is implemented slowly over time. Phased

6 Conversion done by abandoning old system and starting the new. Direct approach

7 Diagram that shows the information flow within an organization. Data flow

11 chart

Shows the relationship between input and output documents. Grid

12 Old and new systems are operated side by side. Parallel

13

The most commonly overlooked activity in the implementation phase.

Training

Num Multiple Choice Answers

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A D A C D D A D A C

Matching Answers

g h f d c a b i j e

Chapter 15: Your Future and Information Technology

Crossword Puzzle Answers:

Across

Num. Clue Answer

4 Inputs customer information and other data. Data entry worker

6 Repairs and installs computer components and systems. Computer Technician

8 Acting in anticipation of future problems, needs, or changes. Proactive

9 Develops and maintains Web sites. Webmaster

10 Plans and designs information systems. System analyst

11

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Prepares instruction manuals and technical reports. Technical writer

.

12 Designs, tests, and researches encryption procedures. Cryptographer

Down

Num. Clue Answer

1 Person that is unfamiliar with computers. Na?ve

2 Creates, tests, and troubleshoots computer programs. Programmer

3 Person that feels learning about computers is an imposition. Frustrated

4 Creates and formats publication-ready material. Desktop publisher

5 Instructs users on the latest software and hardware. Computer trainer

7 Person that feels the idea of using a microcomputer is overrated. Cynic

Num Multiple Choice Answers

D B A D C D C A D B

Matching Answers

d j h a e i b g c f

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