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170+ Computer Awareness Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Common Topics in Competitive and Entrance exams , Union Public Service Commission (UPSC) .

1.

The following device allows the user to add external components to a computer system

A. Storage devices
B. Keyboards
C. Ports/ system boards
D. Diskettes
Answer» C. Ports/ system boards
2.

Software that manages data in more than one file at a time and these files are treated as tables with rows and columns rather than as lists of records is

A. Relational Data Base Management Package
B. Data Base Management Package
C. Documentation Package
D. None of these
Answer» A. Relational Data Base Management Package
3.

A program that remains in the memory while other programs are executing

A. Resident Program
B. Non-Resident Program
C. Permanent Program
D. None of these
Answer» A. Resident Program
4.

The total time elapsed between submission of command and data to a computer and getting the result of computation is the

A. Access time
B. Response time
C. Entrance time
D. None of these
Answer» B. Response time
5.

An automatic machine that is made to perform routine human tasks is

A. Computer
B. Robot
C. Tanker
D. None of these
Answer» B. Robot
6.

The time required to complete a single, continuous execution of an object program is called

A. Run time
B. Access time
C. Random time
D. Response time
Answer» A. Run time
7.

Computer network is a

A. A distributed data processing system
B. Multiple computers are linked together for the purpose of data communication and resource sharing
C. Both A & B are false
D. Both A & B are true
Answer» D. Both A & B are true
8.

A process of collecting, organizing, storing and otherwise maintaining a complete historical record of programs and other documents used or prepared during the different phases of the system is called

A. Documentation
B. Document reader
C. Data process
D. None of these
Answer» A. Documentation
9.

What are connector symbol?

A. They are used in a flowchart
B. It represents a junction in a flow line
C. Often used to transfer flow between different pages of a lengthy chart
D. All the above
Answer» D. All the above
10.

Console is

A. A device that enables human operators to communicate with the computer
B. A device that enables human operators not to communicate with the computer
C. Communication between computers
D. None of these
Answer» A. A device that enables human operators to communicate with the computer
11.

Constant is a value written into a program instruction

A. that does not change during the execution of the program
B. that can change during the execution of the program
C. that can vary during the execution of the program
D. none of these
Answer» A. that does not change during the execution of the program
12.

A removable direct-access storage medium containing multiple magnetic disks mounted vertically on a single-shaft is referred as

A. Tape pack
B. Disk pack
C. Cylinder
D. None of these
Answer» B. Disk pack
13.

Diskette is a

A. A low-cost, thin flexible magnetic disk storage device
B. High volume storage device
C. Primary storage device
D. None of these
Answer» A. A low-cost, thin flexible magnetic disk storage device
14.

An optical input device that is used to read documents printed in a special type font is known as

A. Document reader
B. Documentation
C. Printer
D. None of these
Answer» A. Document reader
15.

For checking spelling one uses

A. Dictionary Disk
B. Index disk
C. Directory
D. None of these
Answer» A. Dictionary Disk
16.

A storage devices where the access time is effectively independent of the location of the data is referred as

A. Direct access
B. Secondary storage
C. Primary storag
D. None of these
Answer» A. Direct access
17.

Diagnostic routines is a

A. Programs used to print error messages
B. Indicates system problems and improper program instructions.
C. Both A & B are true
D. None of these
Answer» C. Both A & B are true
18.

The term DBMS is referred to

A. Data Base Management system
B. The software used for the management, maintenance and retrieval of the data stored in a data base
C. Both A & B are true
D. None of these
Answer» C. Both A & B are true
19.

The speed at which data is transferred from the main memory to another medium on which data are recorded is referred as

A. Data transfer rate
B. Byte
C. Buds
D. None of these
Answer» A. Data transfer rate
20.

The time period during which a computer is malfunctioning or not operating correctly due to machine failures is referred as

A. Downtime
B. Uptime
C. Runtime
D. None of these
Answer» A. Downtime
21.

Automatic execution of high-priority computer programs that have been designed to pre- empt the use of computer resources is referred as

A. Foreground processing
B. background processing
C. black processing
D. white processing
Answer» A. Foreground processing
22.

Digitizer is an input device

A. Used to convert graphic and pictorial data into binary inputs for a digital computer
B. Used to convert graphic and pictorial data into analog inputs for a digital computer.
C. Used for debugging
D. None of these
Answer» A. Used to convert graphic and pictorial data into binary inputs for a digital computer
23.

A flat, circular plate coated with a magnetic material on which data can be stored by magnetization of portions of the flat surface is

A. Disk
B. Tape
C. Pen drive
D. None of these
Answer» A. Disk
24.

Disk operating system is referred for

A. DOS
B. Operating system which contains the disk-oriented commands and uses disk devices for permanent storage
C. Both A & B
D. None of these
Answer» C. Both A & B
25.

Document reader is

A. An optical input device used to read documents
B. A device that arrange the documents
C. A device that is used to edit document
D. None of these
Answer» A. An optical input device used to read documents
26.

One or more identifying lines printed at the bottom of a page are referred as

A. Header
B. Footer
C. Index
D. None of these
Answer» B. Footer
27.

FORTRAN is

A. Formula Translation
B. A high-level mathematically oriented programming language
C. Both A & B
D. None of these
Answer» C. Both A & B
28.

A CPU designed specifically to handle the communications processing task with main purpose is to off-load communications processing task from the host computer so that the host computer can be dedicated for applications and data processing jobs.

A. Backend processor
B. Front-end processor
C. Node processor
D. None of these
Answer» B. Front-end processor
29.

An adder which adds three binary digits and outputs a result bit and a carry bit is referred as

A. Half adder
B. Quarter adder
C. Full adder
D. None of these
Answer» C. Full adder
30.

Emulator is a program that

A. Permits one computer to execute the machine-language instructions of another computer of a different make
B. Which is not broken down into smaller units
C. Permits one computer to execute the machine-language instructions of another computer of same make.
D. None of these
Answer» A. Permits one computer to execute the machine-language instructions of another computer of a different make
31.

EDP is referred to

A. Electronic Data Processing
B. Data processing through equipment that is predominantly electronic such as digital computer
C. Both A & B
D. None of these
Answer» C. Both A & B
32.

Internet banking is an example of

A. Electronic funds transfer (EFT)
B. EDP (Electronic Data Processing )
C. EBCDIC
D. ASCII
Answer» A. Electronic funds transfer (EFT)
33.

EBCDIC is

A. 6-bit coding system
B. 7-bit coding system
C. 8-bit coding system
D. 9-bit coding system
Answer» C. 8-bit coding system
34.

A data communication facility on which data can be transmitted in two directions is referred as

A. Duplex
B. Simplex
C. Triplex
D. None of these
Answer» A. Duplex
35.

Electronic Mail /Message System (EMMS) best suits to

A. Postal service
B. Telephone service
C. Telegraph service
D. None of these
Answer» A. Postal service
36.

Digital Computer is a computer

A. that works with discrete quantities
B. that works with analog quantities
C. Both A & B
D. None of these
Answer» A. that works with discrete quantities
37.

The subdivision of fields

A. always done to give the programmer greater flexibility
B. dependent on programming language used
C. never accomplished on fields containing numeric data
D. all the above
Answer» B. dependent on programming language used
38.

The checking operation performed on input is called

A. validation of data
B. verification of data
C. vilification of data
D. control of data
Answer» A. validation of data
39.

A device that attaches to both ends of an electrical bus and prevents reflection of echoes of signals that reach the end of the bus is called

A. Terminator
B. Connector
C. Processor
D. None of these
Answer» A. Terminator
40.

A device mounted on a communication satellite which receives, amplifies and retransmits signals’ from earth stations is called

A. Terminator
B. Connector
C. Processor
D. Transponder
Answer» D. Transponder
41.

Technique of using disk space to make programs believe that the system contains more random access memory (RAM) than is actually available is called

A. Virtual memory
B. Secondary memory
C. Primary memory
D. None of these
Answer» A. Virtual memory
42.

A term means that the application software is priced separately from the computer hardware is called

A. Unbundled
B. Bundled
C. Utility
D. None of these
Answer» A. Unbundled
43.

Following is not the operating system

A. UNIX
B. DOS
C. WINDOWS
D. BASIC
Answer» D. BASIC
44.

Which of the following is true concerning personal computers?

A. They have been most successful in the home.
B. They are user friendly
C. No specific programming technique required
D. All the above.
Answer» D. All the above.
45.

While buying a PC system, one should first

A. identify hardware components
B. define computing needs
C. both A and B
D. None of these
Answer» C. both A and B
46.

The microcomputers which have the same operating characteristics as the IBM microcomputers are called

A. IBM desk top
B. IBM PC
C. IBM advanced computers
D. None of theses
Answer» B. IBM PC
47.

The personal computers are also referred as

A. desk top micros
B. advanced computers
C. palmtop computers
D. all the above
Answer» A. desk top micros
48.

POS data-entry system is used extensively by

A. banking industry
B. grocery industry
C. railroad industry
D. word-processing industry
Answer» B. grocery industry
49.

Primary advantage of key-to-tape data-entry systems

A. A large percentage of editing can be performed at the time of data entry
B. Key verification is easily performed
C. The tape is reusable
D. Keying errors can be detected as they occur
Answer» C. The tape is reusable
50.

Maximum character EBCDIC can code

A. 8
B. 16
C. 64
D. 256
Answer» D. 256

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