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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) .

101.

Speech synthesis is

A. The ability to input data directly into a computer system by speaking to it
B. The ability to output data directly from a computer system in spoken words
C. Processing of voice in computer systems
D. None of these.
Answer» B. The ability to output data directly from a computer system in spoken words
102.

A technique used to reduce the speed mismatch between slow speed I/O devices and fast CPU is called

A. Spooling
B. Paging
C. Segmentation
D. None of these
Answer» A. Spooling
103.

Storing programs on disk and then transferring these programs into main storage as and when they are needed. The technique is used to process large programs or several programs with limited memory is called

A. Swapping
B. Spooling
C. Paging
D. Segmentation
Answer» A. Swapping
104.

A symbol to indicate beginning (START), ending (STOP) and pauses (HALT) in program logic flow are referred as

A. Terminal symbol
B. Decision symbol
C. Processing symbol
D. None of these
Answer» A. Terminal symbol
105.

Portability is program ability to run on

A. dissimilar machines with minimum modification
B. similar machines with maximum modification
C. dissimilar machines with maximum modification
D. similar machines with maximum modification
Answer» A. dissimilar machines with minimum modification
106.

A protocol that specifies how a personal computer can connect to a mail server on the Internet and download E-mail is known as

A. Post office protocol
B. System protocol
C. Network protocol
D. None of these
Answer» A. Post office protocol
107.

A unit of a computer system that interprets instructions and executes them is known as

A. Processor
B. Storage
C. Peripherals
D. None of these
Answer» A. Processor
108.

A register in CPU used to store the address of the next instruction to be executed is known as

A. Program counter
B. Program library
C. Programmer
D. None of these
Answer» A. Program counter
109.

One who designs, writes, tests and maintenance computer programs is called

A. Programmer
B. Operator
C. User
D. None of these
Answer» A. Programmer
110.

Which of the following terms applies to communication between two computer systems?

A. computer literacy
B. power supply
C. applications software
D. connectivity
Answer» D. connectivity
111.

A memory in CPU that holds program instructions, input data, intermediate results and the output information produced during processing is

A. Secondary memory
B. Primary memory
C. Auxiliary memory
D. None of these
Answer» B. Primary memory
112.

A collection of complete programs, subroutines, and program modules that have already been developed, tested and documented to be used by programming projects.

A. Program counter
B. Program library
C. Programmer
D. None of these
Answer» B. Program library
113.

The following typically happens in the output phase of a computer based information system

A. Data is put into the computer for processing
B. Information is produced in hardcopy / softcopy form
C. Mathematical calculations are performed
D. All of the above.
Answer» B. Information is produced in hardcopy / softcopy form
114.

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

A. system where computer is used to turn data into information
B. inputting data
C. processing data
D. data is put into the computer for processing
Answer» A. system where computer is used to turn data into information
115.

The following piece of hardware is used as input phase of a computer-based information system

A. Printer
B. Diskette
C. Monitor
D. Keyboard
Answer» D. Keyboard
116.

Software instructions intended to satisfy a user specific processing needs are called

A. systems software
B. microcomputer
C. documentation
D. applications software
Answer» D. applications software
117.

A term used for diskette is

A. disk cartridge
B. disk pack
C. floppy disk
D. none of these
Answer» C. floppy disk
118.

Following is true for the digital computer

A. Information is in form of a string of binary digits
B. It can be used as analog processor
C. It is less accurate than the analog computer
D. None of these.
Answer» A. Information is in form of a string of binary digits
119.

Comparing with secondary storage, primary storage is

A. slow and inexpensive
B. fast and inexpensive
C. fast and expensive
D. slow and expensive
Answer» C. fast and expensive
120.

CPU performs read/write operations at any point in time in

A. ROM
B. PROM
C. EPROM
D. RAM
Answer» C. EPROM
121.

Following is not the from of secondary storage

A. Magnetic tape
B. CD’s
C. Disk
D. Hard disk
Answer» D. Hard disk
122.

Technique of placing software/programs in a ROM semiconductor chip is called

A. PROM
B. EPROM
C. firm ware
D. microprocessor
Answer» C. firm ware
123.

Following is not true for magnetic tape

A. low cost
B. direct-access storage medium
C. compact and portable
D. highly reliable
Answer» B. direct-access storage medium
124.

The following is an nonvolatile memory

A. ROM
B. RAM
C. LSI
D. VLSI
Answer» A. ROM
125.

The ________ can be programmed one time by either the manufacturer or the computer user. Once programmed, it cannot be modified.

A. RAM
B. ROM
C. PROM
D. EPROM
Answer» C. PROM
126.

Which of the following is not true of a magnetic disk?

A. Users can update records by writing over the old data
B. It provides sequential access to stored data
C. It is slow relative to magnetic tape
D. All of the above are true
Answer» B. It provides sequential access to stored data
127.

Which of the following was (were) not used in first-generation computers?

A. vacuum tubes
B. punch cards
C. magnetic core
D. all of the above
Answer» C. magnetic core
128.

Following is not true for Backup files

A. These are the files which are generated automatically in when one saves a document.
B. These files help in protecting the document due to out of order of the computer or power failure.
C. These files delete as soon as computer is turned off
D. None of these
Answer» C. These files delete as soon as computer is turned off
129.

An algebra that deals with logical propositions which are either true or false is referred as

A. Boolean algebra
B. Modern Algebra
C. Abstract Algebra
D. None of these
Answer» A. Boolean algebra
130.

Bandwidth is

A. The range of frequencies available for data transmission
B. Data transmission rate
C. Alternate for rubber band
D. None is true
Answer» A. The range of frequencies available for data transmission
131.

A coding structure in which characters are represented by means of a series of parallel bars is

A. Bar Code
B. Menu bar
C. Numeric bar
D. None of these
Answer» A. Bar Code
132.

In Broadband system a network system

A. Several analog signals share the same physical network channel.
B. Only digital signals share the same physical network channel.
C. Single analog signals share the same physical network channel.
D. None of these.
Answer» A. Several analog signals share the same physical network channel.
133.

Bit stands for

A. binary digit
B. one binary piece of information
C. Both A and B are true
D. None is true
Answer» C. Both A and B are true
134.

Broadband channel is the

A. The fastest carriers where data transfer rates is of 1 million baud (bits/secon(D) or more.
B. The slower carriers where data transfer rates is of 56k baud
C. Musical channel
D. None of these
Answer» A. The fastest carriers where data transfer rates is of 1 million baud (bits/secon(D) or more.
135.

BLOB is

A. Binary Large Object
B. A long bit string representing complex data
C. Object oriented language
D. Only A & B are true
Answer» D. Only A & B are true
136.

A group of related items / section of program coding treated as a unit is referred as

A. Block
B. Duplex
C. Street
D. None of these
Answer» A. Block
137.

An operation in which data is moved to a different location is referred as

A. Block move
B. Street move
C. Delete
D. None of these
Answer» A. Block move
138.

The following is responsible for number of logical records in a physical record

A. Blocking factor
B. Block
C. Boolean algebra
D. None of these
Answer» A. Blocking factor
139.

Boolean variable assumes

A. Values that are true only
B. Values that are false only
C. Values that are either true or false
D. None of these
Answer» C. Values that are either true or false
140.

Bubble Memory is

A. nonvolatile
B. volatile
C. permanent
D. None of these
Answer» A. nonvolatile
141.

In Nonvolatile memory device

A. Data contained in them is not lost when the power turned off
B. Data contained in them is lost when the power turned off.
C. data contained in them is permanent and not be rewrite
D. None of these
Answer» A. Data contained in them is not lost when the power turned off
142.

Following is true for Bubble Memory

A. A compact data storage device made of thin wafers of garnet (a semiconductor material) in a magnetic field.
B. Nonvolatile memory
C. Data contained in them is not lost when the power turned off
D. All are true
Answer» D. All are true
143.

Buffer is device/ storage area

A. Where data are temporarily stored
B. Where data is permanently stored
C. Where data error occurs
D. None of these
Answer» A. Where data are temporarily stored
144.

A network geometric arrangement in which a single connecting line is shared by a number of nodes is called

A. Car Topology
B. Bus Topology
C. Truck Topology
D. None of these
Answer» B. Bus Topology
145.

An error in a computer program is referred as

A. Bug
B. Bit
C. Virus
D. None of these
Answer» A. Bug
146.

Circuits that provide a communication path between two or more devices of a digital computer system is

A. Car
B. Bus
C. Truck
D. None of these
Answer» B. Bus
147.

A fixed number of adjacent bits that represent a particular character or symbol are referred as

A. Byte
B. Octal
C. Bubble
D. None of these
Answer» A. Byte
148.

Cache memory is a

A. Small buffer storage
B. Permanent storage
C. Main memory
D. None of these
Answer» A. Small buffer storage
149.

The total number of digits (symbols) available to represent numbers in a positional number system is referred as

A. Number system
B. Base
C. Power
D. None of these
Answer» B. Base
150.

Cache memory is

A. Smaller and faster than main storage
B. Bigger and slower then main storage
C. Smaller but slower than main memory
D. Bigger and faster than main memory
Answer» A. Smaller and faster than main storage

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