In computer based information system (CBIS), DFD stands for:

DFD stands for ___

A

data file dish

B

data flow daigram

C

disk flat database

D

disk file database

The Data flow diagram (DFD) shows;

A

the flow of data

B

the processes

C

the areas where they are stored.

D

All of the above

E

None of the above

Which of the following symbols is (are) not the Data Flow Diagram (DFD):

A

a square

B

an open rectangle

C

a circle

D

a triangle

E

a bubble

Consider a company that assembles computers. The probability of a faulty assembly of any computer is p. The company therefore subjects each computer to a testing process. This testing process gives the correct result for any computer with a probability of q. What is the probability of a computer being declared faulty?

A

pq + (1 - p) (1 - q)

B

(1 - q)p

C

(1 - p)q

D

pq

A large computer information system maintains many different computer files. Which amongst them is called a perpetual file?

A

Specialized file

B

Log file

C

Master file

D

Update file

E

None of the above

The value of a computer is depreciated over five years for tax purposes (meaning that at the end of five years , the computer is worth $0). If a business paid $ 2,100 for a computer, how much will it have depreciated after 2 years?

A

$840

B

$ 1,050

C

$ 820

D

$ 420

You create home directories for users Jan and Kim on a Windows NT Server computer. Jan works on a Windows NT Workstation computer. Kim works on a Microsoft Windows for Workgroups computer. After they log on, Jan can access her home directory, but Kim cannot access her home directory. What should you do?

A

Start the Replication service on Kim's Windows for Workgroups computer

B

Relocate Kim's home directory to her Windows for Workgroups computer

C

Map a drive on Kim's Windows for Workgroups computer to her home directory on the server

D

You cannot do this. Home directories can be accessed only by Windows NT computers

A _____ is a formalized computer information system that can integrate data from various sources to provide the information necessary for management decision making.

A

prompt

B

passwords

C

MIS

D

Tactical

E

None of the above

Which of the following best describes a computer-based information system?

A

A system in which a computer is used to turn data into information

B

Inputting data

C

Processing data

D

Performing complex mathematical calculations

E

Data is put into the computer for processing

Which of the following isn't used in the storage phase of a computer-based information system?

A

Magnetic

B

Keyboard

C

Diskette

D

Hard disk

E

None of the above

In computer based information system (CBIS), DFD stands for:

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