4320 + Mcqs in Computer Science McqOptions

1.	A communications device that combines transmissions from several 1/ O devices into one line is a:
A.	concentrator
B.	modifier
C.	multiplexer
D.	full-duplex line
E.	None of the above
Answer» D. full-duplex line

Discussion

2.	Which of the following program is used to copy files to or from another UNIX timesharing system over a single link?
A.	VMTP
B.	TFTP
C.	UUCP
D.	UART
E.	None of the above
Answer» D. UART

Discussion

3.	A computer that handles resource sharing and network management in a local area network. Select the best fit for answer:
A.	Network Server
B.	Virtual Private Network
C.	Network operating system
D.	OSI
Answer» B. Virtual Private Network

Discussion

4.	Which of the following signals is not standard RS - 232-C signal?
A.	VDR
B.	RTS
C.	CTS
D.	DSR
E.	None of the above
Answer» B. RTS

Discussion

5.	What is the default subnet mask for a class B network?
A.	127.0.01
B.	255.0.0.0
C.	255.255.0.0
D.	255.255.255.0
E.	None of the above
Answer» D. 255.255.255.0

Discussion

6.	How many pairs of stations can simultaneously communicate on Ethernet LAN?
A.	1
B.	2
C.	3
D.	multiple
E.	None of the above
Answer» B. 2

Discussion

7.	The data-link layer, in reference to the OSI model, specifies
A.	data link procedures that provide for the exchange of data via frames that can be sent and received
B.	the interface between the X.25 network and packet mode device
C.	the virtual circuit interface to packet-switched service
D.	All of the above
E.	None of the above
Answer» B. the interface between the X.25 network and packet mode device

Discussion

8.	Which of the following is an example of bounded medium?
A.	Coaxial cable
B.	Wave guide
C.	Fiber optic cable {d) All of the above
D.	None of the above
Answer» E.

Discussion

9.	With an IP address starting at 200, you currently have 10 subnets. What subnet mask should you use to maximize the number of available hosts?
A.	192
B.	224
C.	240
D.	248
E.	252
Answer» D. 248

Discussion

10.	Which of the following digits are known as the terminal number of the Network User Address (NUA)?
A.	5-7
B.	1-4
C.	8-12
D.	13-14
E.	None of the above
Answer» D. 13-14

Discussion

11.	To locate a data item for storage is
A.	Field
B.	Feed
C.	Database
D.	Fetch
E.	None of the above
Answer» E. None of the above

Discussion

12.	Bit map terminal
A.	support displays containing multiple windows
B.	requires considerable amount of video RAM
C.	requires tremendous amount of copying and hence low performance
D.	All of the above
E.	None of the above
Answer» E. None of the above

Discussion

13.	The first firm to mass-market a microcomputer as a personal computer was
A.	IBM
B.	Sperry Univac
C.	Radio Shack
D.	Data General Corporation
E.	None of the above
Answer» D. Data General Corporation

Discussion

14.	When did IBM close the last of its punched card manufacturing plant?
A.	June, 1989
B.	December, 1984
C.	March, 1982
D.	November, 1979
E.	None of the above
Answer» C. March, 1982

Discussion

15.	What digits are representative of all binary numbers?
A.	0
B.	1
C.	Both (a) and (b)
D.	3
E.	None of the above
Answer» D. 3

Discussion

16.	The terminal device often used in checking charge cards that offers both a limited keyboard input and visual output is the:
A.	Intelligent terminal
B.	POS terminal
C.	Video display terminal
D.	Audio response unit
E.	None of the above
Answer» D. Audio response unit

Discussion

17.	The flow and timing to data to and from the microprocessor is regulated by
A.	control pins
B.	address pins
C.	data pins
D.	power pins
E.	None of the above
Answer» B. address pins

Discussion

18.	What type of memory is not directly addressable by the CPU and requires special software called EMS (expanded memory specification)?
A.	Extended
B.	Expanded
C.	Base
D.	Conventional
E.	Basic system
Answer» C. Base

Discussion

19.	Programmed instructions to the computer is known as
A.	Data
B.	Code
C.	Documentation
D.	Database
E.	None of the above
Answer» C. Documentation

Discussion

20.	A device that can accept data, hold them&deliver them on demand at a later time is known as
A.	Buffer
B.	Memory
C.	CPU
D.	Register
E.	None of the above
Answer» C. CPU

Discussion

21.	Sequential file organization is most appropriate for which of the following applications?
A.	grocery-store checkout
B.	bank checking accounts
C.	payroll
D.	airline reservations
E.	None of the above
Answer» D. airline reservations

Discussion

22.	A half byte is know is
A.	Data
B.	Bit
C.	Half byte
D.	Nibble
E.	None of the above
Answer» E. None of the above

Discussion

23.	A machine associated with card-based data processing is
A.	Codomain
B.	Collator
C.	Cartridge
D.	Digitizer
E.	None of the above
Answer» C. Cartridge

Discussion

24.	Which of the following is used as "Input device" for the computer?
A.	Printer
B.	VDU
C.	TV
D.	Light pen
E.	None of the above
Answer» E. None of the above

Discussion

25.	The equipment with which the computer talks to its users is called a
A.	word processor
B.	peripheral
C.	software
D.	diskette
E.	None of the above
Answer» C. software

Discussion

26.	A computer-controlled device for training exercises that duplicates the work environment is a:
A.	simulator
B.	duplicator
C.	trainer
D.	COM device
E.	None of the above
Answer» B. duplicator

Discussion

27.	A computer program that converts an entire program into machine language at one time is called a/an
A.	interpreter
B.	simulator
C.	compiler
D.	commander
E.	None of the above
Answer» D. commander

Discussion

28.	The computer translates the condition of each switch to a number. What number is represented by the OFF state?
A.	-7
B.	-3.75
C.	1
D.	0
E.	-22
Answer» E. -22

Discussion

29.	File specification books are created primarily for the use of
A.	systems analysts
B.	programmers
C.	operators
D.	managers
E.	None of the above
Answer» C. operators

Discussion

30.	What is the name of the chip which has more than once processor on it?
A.	Parallel chip
B.	Multi-processor chip
C.	Transputer
D.	Parallel processor
E.	None of the above
Answer» D. Parallel processor

Discussion

31.	Which of the following languages is often translated to pseudo code?
A.	Assembly
B.	FORTRAN
C.	PASCAL
D.	BASIC
E.	None of the above
Answer» D. BASIC

Discussion

32.	Which memory stores the values of variables.
A.	SAM
B.	ROM
C.	RAM
D.	PROM
E.	None of the above
Answer» D. PROM

Discussion

33.	The process used to set up a programs once the system is operational is
A.	Operating system
B.	Black bon
C.	Boot strap
D.	Utility
E.	None of the above
Answer» D. Utility

Discussion

34.	The _____ provides a path between the CPU and peripheral devices, which are connected via interface cards.
A.	computer
B.	expansion bus
C.	memory
D.	CPU
E.	None of the above
Answer» C. memory

Discussion

35.	Tiny rings made of magnetic material that can be polarised to represent binary 1 or 0 is called
A.	Magnetic core
B.	Magnetic disk
C.	Card punch
D.	Floppy disk
E.	None of the above
Answer» B. Magnetic disk

Discussion

36.	The hexadecimal number system is widely used in analyzing and programming ______
A.	registers
B.	chips
C.	microprocessors
D.	vacuum tube
E.	None of the above
Answer» D. vacuum tube

Discussion

37.	A combinational logic circuit which is used to send data coming from a single source to two or more separate destinations is called as
A.	decoder
B.	encoder
C.	multiplexer
D.	demultiplexer
E.	None of the above
Answer» E. None of the above

Discussion

38.	How many full and half-adders are required to add 16-bit numbers?
A.	8 half-adders, 8 full-adders
B.	1 half-adders, 15 full-adders
C.	16 half-adders, no full-adders
D.	4 half-adders, 12 full-adders
E.	None of the above
Answer» C. 16 half-adders, no full-adders

Discussion

39.	Names, numbers, and other information needed to solve a problem are called _____
A.	program
B.	instruction
C.	data
D.	controls
E.	None of the above
Answer» D. controls

Discussion

40.	A typical microcomputer may have up to 65,536 registers in its memory. Each of these registers, usually called a _____
A.	address
B.	memory location
C.	registers
D.	chip
E.	None of the above
Answer» C. registers

Discussion

41.	An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ parity.
A.	odd, even
B.	high, low
C.	low, high
D.	even, odd
E.	None of the above
Answer» B. high, low

Discussion

42.	A gate is a logic circuit with one or more input signals but _____ output signal.
A.	two
B.	double
C.	one
D.	more than one
E.	None of the above
Answer» D. more than one

Discussion

43.	The term sum-of-products in boolean algebra means
A.	The AND function of several OR functions
B.	The OR function of several AND functions
C.	The OR function of several OR functions
D.	The AND function of several AND functions
E.	None of the above
Answer» C. The OR function of several OR functions

Discussion

44.	A shift register can be used for:
A.	parallel to serial conversion
B.	serial to parallel conversion
C.	digital delay line
D.	all of the above
E.	None of the above
Answer» E. None of the above

Discussion

45.	What table shows the electrical state of a digital circuit's output for every possible combination of electrical states in the inputs?
A.	Function table
B.	Truth table
C.	Routing table
D.	ASCII table
E.	None of the above
Answer» C. Routing table

Discussion

46.	What is the hexadecimal equivalent of a binary number 10101111
A.	AF
B.	9E
C.	8C
D.	All of the above
E.	None of the above
Answer» B. 9E

Discussion

47.	A combinational logic circuit which generates particular binary word or number is
A.	decoder
B.	multiplexer
C.	encoder
D.	demultiplexer
E.	None of the above
Answer» C. encoder

Discussion

48.	The 1's compliment of binary number 11010 is:
A.	00101
B.	00010
C.	00110
D.	11101
E.	None of the above
Answer» B. 00010

Discussion

49.	A flip-flop can store:
A.	1 bits of data
B.	2 bits of data
C.	3 bits of data
D.	4 bits of data
E.	None of the above
Answer» B. 2 bits of data

Discussion

50.	A logic circuit which is used to change a BCD number into an equivalent decimal number is
A.	decoder
B.	encoder
C.	multiplexer
D.	code converter
E.	None of the above
Answer» B. encoder

Discussion

Explore topic-wise MCQs in Testing Subject.

A communications device that combines transmissions from several 1/ O devices into one line is a:

Which of the following program is used to copy files to or from another UNIX timesharing system over a single link?

A computer that handles resource sharing and network management in a local area network. Select the best fit for answer:

Which of the following signals is not standard RS - 232-C signal?

What is the default subnet mask for a class B network?

How many pairs of stations can simultaneously communicate on Ethernet LAN?

The data-link layer, in reference to the OSI model, specifies

Which of the following is an example of bounded medium?

With an IP address starting at 200, you currently have 10 subnets. What subnet mask should you use to maximize the number of available hosts?

Which of the following digits are known as the terminal number of the Network User Address (NUA)?

To locate a data item for storage is

Bit map terminal

The first firm to mass-market a microcomputer as a personal computer was

When did IBM close the last of its punched card manufacturing plant?

What digits are representative of all binary numbers?

The terminal device often used in checking charge cards that offers both a limited keyboard input and visual output is the:

The flow and timing to data to and from the microprocessor is regulated by

What type of memory is not directly addressable by the CPU and requires special software called EMS (expanded memory specification)?

Programmed instructions to the computer is known as

A device that can accept data, hold them&amp;deliver them on demand at a later time is known as

Sequential file organization is most appropriate for which of the following applications?

A half byte is know is

A machine associated with card-based data processing is

Which of the following is used as "Input device" for the computer?

The equipment with which the computer talks to its users is called a

A computer-controlled device for training exercises that duplicates the work environment is a:

A computer program that converts an entire program into machine language at one time is called a/an

The computer translates the condition of each switch to a number. What number is represented by the OFF state?

File specification books are created primarily for the use of

What is the name of the chip which has more than once processor on it?

Which of the following languages is often translated to pseudo code?

Which memory stores the values of variables.

The process used to set up a programs once the system is operational is

The _____ provides a path between the CPU and peripheral devices, which are connected via interface cards.

Tiny rings made of magnetic material that can be polarised to represent binary 1 or 0 is called

The hexadecimal number system is widely used in analyzing and programming ______

A combinational logic circuit which is used to send data coming from a single source to two or more separate destinations is called as

How many full and half-adders are required to add 16-bit numbers?

Names, numbers, and other information needed to solve a problem are called _____

A typical microcomputer may have up to 65,536 registers in its memory. Each of these registers, usually called a _____

An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ parity.

A gate is a logic circuit with one or more input signals but _____ output signal.

The term sum-of-products in boolean algebra means

A shift register can be used for:

What table shows the electrical state of a digital circuit's output for every possible combination of electrical states in the inputs?

What is the hexadecimal equivalent of a binary number 10101111

A combinational logic circuit which generates particular binary word or number is

The 1's compliment of binary number 11010 is:

A flip-flop can store:

A logic circuit which is used to change a BCD number into an equivalent decimal number is

A device that can accept data, hold them&deliver them on demand at a later time is known as

An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _ An XOR gate can test each received word for parity rejecting words with _ parity.