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Which of the following is the product of data processing ?
A. information
B. data
C. software program
D. system
Ans. A
The process of putting data into a storage location is called
A. reading
B. writing
C. controlling
D. hand shaking
Ans. B
The process of copying data from a memory location is called
A. reading
B. writing
C. controlling
D. booting
Ans. A
A list of instructions used by a computer is called
A. program
B. CPU
C. text
D. output
Ans. A
The application layer of the OSI model is the
A. seventh layer
B. sixth layer
C. fifth layer
D. fourth layer
Ans. A
Working of the WAN generally involves
A. Satellite
B. frame delay
C. ATM
D. user agent
Ans. A
Which of the following technique provides dedicated communication channel between two stations.
A. switch network
B. circuit switching
C. packet switching
D. none of these
Ans. B
End-to-end conncectivity is provided from host-to-host in
A. network layer
B. session layer
C. data link layer
D. transport layer
Ans. D
Base band is
A. transmission of signals without modulation
B. a signal all of whose energy is contained within a finite frequency range
C. the simultaneous transmission of data to a number of stations
D. All of the above
Ans. A
The simultaneous transmission of data to a number of stations is known as
A. broad cast
B. bandwidth
C. Aloha
D. analog transmission
Ans. A
The communication mode that supports data in both directions
A. simplex
B. half duplex
C. duplex
D. multiplex
Ans. B
Modulation is the process of
A. sending a file from one computer to another computer
B. converting digital signals to analog signals
C. converting analog signals to digital signals
D. echoing every character that is received
Ans. B
A distributed network configuration in which all data/information pass through a central computer is
A. bus network
B. star network
C. duplex
D. multiplex
Ans. D
To connect a computer with a device in the same room, you might be likely to use
A. a coaxial cable
B. a dedicated time
C. a ground station
D. All of the above
Ans. A
Administrative supervision of database activities is the responsibility of the
A. data base administrator
B. DP Manager
C. DB Manager
D. VP-DP administrator
Ans. A
Which of the following component of a computer system is the most important to a data base management system ?
A. mouse
B. high resolution video display
C. printer
D. high speed, large capacity disk
Ans. D
What is the ser ious pr oblem(s) of file management systems ?
A. data redundancy
B. difficult to update
C. program dependence
D. All of the above
Ans. D
Which of the following contains complete record of all activity that affected the contents of a database during a certain period of time ?
A. master file
B. transaction file
C. report
D. query file
Ans. B
In a database, related fields are grouped to form
A. record
B. file
C. bank
D. field group
Ans. A
A table consists of
A. fields and columns
B. rows and columns
C. rows and cells
D. None of these
Ans. B
The purpose of an index is to provide ……….. to the file it is indexing
A. strorage area
B. access path
C. name
D. number
Ans. B
The database environment has all of the following components execpt
A. users
B. separate files
C. database
D. database adinistrator
Ans. B
When changes occur in a data item, if every file which contains that field should not be updated then, it leads to
A. data redundancy
B. data inconsistancy
C. data security
D. data loss
Ans. B
Which of the following is an advantage of the database approach ?
A. elimination of data redundancy
B. ability to associate related data
C. increased security
D. All of the above
Ans. D
When the same data field is stored more than once in a file, then it leads to
A. data redundancy
B. data inconsistancy
C. data dependancy
D. data independancy
Ans. A
Data security threats include
A. privacy invasion
B. hardware failure
C. fraudulent manipulation of data
D. All of the above
Ans. D
Updating a database means
A. revising a file structure
B. reorganizing the database
C. modifying or adding records
D. all of the above
Ans. D
Firmware means
A. software
B. hardware
C. software available on hardware
D. None of these
Ans. C
For each instructions of program in memory the CPU goes through a
A. decode – fetch – execute sequence
B. execute – store – decode sequence
C. fetch – decode – execute sequence
D. fetch – execute – decode sequence
Ans. C
Which of the following is the ascending order of data hierarchy
A. bit – byte – record – field – data base – file
B. bit – byte – field – record – file – database
C. bit – byte – file – field – record – database
D. bit – record – byte – field – file – database
Ans. B
