4320 + Mcqs in Computer Science Page 74 McqOptions

3651.	Memories in which any location can be reached in a fixed (and short) amount of time after specifying its address is called
A.	sequential-access memory
B.	random-access memory
C.	secondary memory
D.	mass storage
E.	None of the above
Answer» C. secondary memory

Discussion

3652.	How many operations per second can perform by a modern fast mainframe digital computer.
A.	1000
B.	100,000
C.	10,00,000
D.	1,00,00,00,000
E.	None of the above
Answer» E. None of the above

Discussion

3653.	A connection between two end points, either physical or logical, over which data may travel in both directions simultaneously is called _____
A.	Dump point
B.	Datalink
C.	Duplex
D.	Networks
E.	None of the above
Answer» D. Networks

Discussion

3654.	Which is part of a computer system, enables human operators to communicate with the computer.
A.	Console
B.	Keyboard
C.	Printer
D.	CPU
E.	None of the above
Answer» B. Keyboard

Discussion

3655.	Who invented the microprocessor?
A.	Marcian E Hoff
B.	Herman H Goldstein
C.	Joseph Jacquard
D.	All of the above
E.	None of the above
Answer» B. Herman H Goldstein

Discussion

3656.	What is the number of bits needed for an address in a 4 K memory?
A.	16
B.	8
C.	12
D.	4
E.	None of the above
Answer» D. 4

Discussion

3657.	The physical equipment made oi various metals, silicon and plastic components that make up the parts of a computer is called
A.	micro
B.	peripheral
C.	hardware
D.	disk drive
E.	None of the above
Answer» D. disk drive

Discussion

3658.	A memory that contains a fine pattern of data permanently defined is
A.	RAM
B.	EPROM
C.	ROM
D.	PROM
E.	None of the above
Answer» D. PROM

Discussion

3659.	Who launched IBM's First PC in 1981?
A.	Dean Cline
B.	C.B. Rogers Jr.
C.	John F. Akers
D.	David Svenson
E.	None of the above
Answer» C. John F. Akers

Discussion

3660.	The CPU is made up of control unit ALU and
A.	Memory
B.	Input-Output
C.	Register unit
D.	All of the above
E.	None of the above
Answer» B. Input-Output

Discussion

3661.	In digital computer, all the expressions are coded into
A.	Octal digits
B.	Binary digits
C.	Hexadecimal digits
D.	Decimal cligits
E.	None of the above
Answer» C. Hexadecimal digits

Discussion

3662.	In computer terminology a compiler means
A.	a person who computes source programs
B.	the same thing as a programmer
C.	key punch operator
D.	a program which translates source program into object program
Answer» E.

Discussion

3663.	A computer performs operations by comparing data items and then, depending on the results, follows predetermined course of action. What are such operations called?
A.	Sequential
B.	Logical
C.	Digital
D.	Physical
E.	None of the above
Answer» C. Digital

Discussion

3664.	Which part of computer performs functions similar to the cerebrums of the above cardiac and nervous system of a human body.
A.	ALU
B.	Input device
C.	CPU
D.	Control unit
E.	None of the above
Answer» D. Control unit

Discussion

3665.	A magnetic tape volume that is used on a data processing operation without any change to its contents is
A.	Magnetic disk
B.	Punched paper tape
C.	Master tape
D.	Card reader
E.	None of the above
Answer» D. Card reader

Discussion

3666.	An output device that converts data from a binary format in main storage to coded hole patterns punched into a paper tape is
A.	Paper tape punch
B.	Punched paper tape
C.	Magnetic disk
D.	Magnetic tape.
E.	None of the above
Answer» B. Punched paper tape

Discussion

3667.	A file that includes an index directory to facilitate random access is
A.	Sequential file
B.	Indexed file
C.	Random file
D.	Serial file
E.	None of the above
Answer» C. Random file

Discussion

3668.	The data bus in 8080A/8085 microprocessor is a group of
A.	eight bidirectional lines that are used to transfer 8 bits between the microprocessor and its I/O and memory
B.	sixteen bidirectional lines that are used for data transfer between the microprocessor and memory
C.	eight unidirectional lines that are used for I/O devices
D.	eight lines used to transfer data among the registers
E.	None of the above
Answer» B. sixteen bidirectional lines that are used for data transfer between the microprocessor and memory

Discussion

3669.	Control of computer system or subsystem operation by an operator who may intervene at arbitrary times is
A.	Manual control
B.	Mapping
C.	Shift register
D.	ALU
E.	None of the above
Answer» B. Mapping

Discussion

3670.	Which of the following is not a standard synchronous communication protocol?
A.	SDLC
B.	SMTP
C.	SLIP
D.	PAS
E.	None of the above
Answer» E. None of the above

Discussion

3671.	The network layer, in reference to the OSI model, provide
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» D. All of the above

Discussion

3672.	In OSI network architecture, the routing is performed by
A.	network layer
B.	data link layer
C.	transport layer
D.	session layer
E.	None of the above
Answer» B. data link layer

Discussion

3673.	Which of the following communications lines is best suited to interactive processing applications?
A.	narrowband channels
B.	simplex lines
C.	full-duplex lines
D.	mixed band channels
E.	None of the above
Answer» D. mixed band channels

Discussion

3674.	Bulletin board system
A.	is a public access message system
B.	is a modem capable of accepting commands
C.	converts analog signals to digital signals
D.	converts digital signals to analog signals
E.	None of the above
Answer» B. is a modem capable of accepting commands

Discussion

3675.	In OSI model, which of the following layer provides error-free delivery of data?
A.	Data link
B.	Network
C.	transport
D.	Session
E.	None of the above
Answer» D. Session

Discussion

3676.	Error detection at the data link level is achieved by?
A.	Bit stuffing
B.	Hamming codes
C.	Cyclic Redundancy codes
D.	Equalization
E.	None of the above
Answer» D. Equalization

Discussion

3677.	The area of coverage of a satellite radio beam is known as
A.	Footprint
B.	Circular polarization
C.	Beam width
D.	Identity
E.	None of the above
Answer» B. Circular polarization

Discussion

3678.	Which of the following data transmission media has the largest terrestrial range without the use of repeaters or other devices?
A.	Hardwiring
B.	Microwave
C.	Satellite
D.	Laser
E.	None of the above
Answer» D. Laser

Discussion

3679.	A batch processing terminal would not include a
A.	CPU
B.	card reader
C.	card punch
D.	line printer
E.	None of the above
Answer» B. card reader

Discussion

3680.	Packet Switch Stream (PSS) was introduced in
A.	the US in 1961 (&) the UK in 1981
B.	the UK in 1980
C.	the US in 1961
D.	None of the above
Answer» C. the US in 1961

Discussion

3681.	The physical layer of a network
A.	defines the electrical characteristics of signals passed between the computer and communication devices
B.	controls error detection and correction
C.	constructs packets of data and sends them across the network
D.	All of the above
E.	None of the above
Answer» B. controls error detection and correction

Discussion

3682.	Which of the following allows devices on one network to communicate with devices on another network?
A.	multiplexer
B.	gateway
C.	t-switch
D.	modern
E.	None of the above
Answer» C. t-switch

Discussion

3683.	An error detecting code is which code is the remainder resulting from dividing the bits to be checked by a predetermined binary number, is known as
A.	Cyclic redundancy check
B.	Checksum
C.	Error detecting code
D.	Error rate
E.	None of the above
Answer» B. Checksum

Discussion

3684.	A distributed data processing configuration in which all activities must pass through a centrally located computer is called a:
A.	ring network
B.	spider network
C.	hierarchical network
D.	data control network
E.	None of the above
Answer» C. hierarchical network

Discussion

3685.	The size or magnitude of a voltage or current waveform is
A.	Amplitude
B.	Aloha
C.	Angle Modulation
D.	Attenuation
E.	None of the above
Answer» B. Aloha

Discussion

3686.	Which of the following is not a transmission medium?
A.	telephone lines
B.	coaxial cable
C.	modem
D.	microwave systems
E.	satellite systems
Answer» D. microwave systems

Discussion

3687.	After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?
A.	Telex
B.	Word processor
C.	Facsimile
D.	Electronic mail
E.	None of the above
Answer» D. Electronic mail

Discussion

3688.	Which file transfer protocol uses UDP?
A.	NFS
B.	TELNET
C.	TFTP
D.	FTP
E.	None of the above
Answer» D. FTP

Discussion

3689.	You are working with a class C network. You are required to configure it for five subnets, each of which will support 25 nodes. What subnet should you use?
A.	255.255.255.0
B.	255.255.255.224
C.	255.255.255.240
D.	255.255.255.248
E.	255.255.255.252
Answer» C. 255.255.255.240

Discussion

3690.	A network designer wants to connect 5 routers as point-to-point simplex line. Then the total number of lines required would be
A.	5
B.	10
C.	20
D.	32
E.	None of the above
Answer» C. 20

Discussion

3691.	Which of the following medium access control technique is used for bus/tree?
A.	token ring
B.	token bus
C.	CSMA
D.	MAC
E.	None of the above
Answer» C. CSMA

Discussion

3692.	Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.
A.	Network collisions occur
B.	Repeaters cannot increase the signal strength sufficiently
C.	Cable terminators do not reflect the signal properly
D.	Cable terminators do not absorb the signal properly
E.	"Line echo" occurs due to the impedance of the cable
Answer» B. Repeaters cannot increase the signal strength sufficiently

Discussion

3693.	In a _____ topology, if there are n devices in a network, each device has n - 1 ports for cables.
A.	ring
B.	bus
C.	star
D.	mesh
E.	None of the above
Answer» E. None of the above

Discussion

3694.	To avoid transmission errors, a check figure is calculated by the
A.	transmitting computer
B.	receiving computer
C.	both (a) and (b)
D.	Start and stop bit
E.	None of the above
Answer» D. Start and stop bit

Discussion

3695.	What is the first octet range for a class A IP address?
A.	1 - 126
B.	192 - 255
C.	192 - 223
D.	1 - 127
E.	128 - 191
Answer» B. 192 - 255

Discussion

3696.	The main difference between TCP and UDP is
A.	UDP is connection oriented where as TCP is datagram service
B.	TCP is an Internet protocol where as UDP is an ATM protocol
C.	UDP is a datagram where as TCP is a connection oriented service
D.	All of the above
Answer» D. All of the above

Discussion

3697.	A specific part of an arithmetic & logic unit that is used to perform the operation of multiplication is
A.	Multiplier
B.	Multiplener
C.	Multivibrator
D.	Quantization
E.	None of the above
Answer» B. Multiplener

Discussion

3698.	Which of the following is used for input and output both
A.	Graph plotter
B.	Teletype terminal
C.	Line printer
D.	All of the above
E.	None of the above
Answer» C. Line printer

Discussion

3699.	Character readers are those devices which read the characters printed on the source documents and then convert them directly into computer-usable input. Which of the following is not a character reader?
A.	OCR
B.	MICR
C.	OMR
D.	LCD
E.	None of the above
Answer» E. None of the above

Discussion

3700.	SPSS stands for
A.	Statistical Package for Systems Science
B.	Systems Package for Social Science
C.	Statistical Package for Sociai Science
D.	All of the above
E.	None of the above
Answer» D. All of the above

Discussion

Explore topic-wise MCQs in Engineering.

Memories in which any location can be reached in a fixed (and short) amount of time after specifying its address is called

How many operations per second can perform by a modern fast mainframe digital computer.

A connection between two end points, either physical or logical, over which data may travel in both directions simultaneously is called _____

Which is part of a computer system, enables human operators to communicate with the computer.

Who invented the microprocessor?

What is the number of bits needed for an address in a 4 K memory?

The physical equipment made oi various metals, silicon and plastic components that make up the parts of a computer is called

A memory that contains a fine pattern of data permanently defined is

Who launched IBM's First PC in 1981?

The CPU is made up of control unit ALU and

In digital computer, all the expressions are coded into

In computer terminology a compiler means

A computer performs operations by comparing data items and then, depending on the results, follows predetermined course of action. What are such operations called?

Which part of computer performs functions similar to the cerebrums of the above cardiac and nervous system of a human body.

A magnetic tape volume that is used on a data processing operation without any change to its contents is

An output device that converts data from a binary format in main storage to coded hole patterns punched into a paper tape is

A file that includes an index directory to facilitate random access is

The data bus in 8080A/8085 microprocessor is a group of

Control of computer system or subsystem operation by an operator who may intervene at arbitrary times is

Which of the following is not a standard synchronous communication protocol?

The network layer, in reference to the OSI model, provide

In OSI network architecture, the routing is performed by

Which of the following communications lines is best suited to interactive processing applications?

Bulletin board system

In OSI model, which of the following layer provides error-free delivery of data?

Error detection at the data link level is achieved by?

The area of coverage of a satellite radio beam is known as

Which of the following data transmission media has the largest terrestrial range without the use of repeaters or other devices?

A batch processing terminal would not include a

Packet Switch Stream (PSS) was introduced in

The physical layer of a network

Which of the following allows devices on one network to communicate with devices on another network?

An error detecting code is which code is the remainder resulting from dividing the bits to be checked by a predetermined binary number, is known as

A distributed data processing configuration in which all activities must pass through a centrally located computer is called a:

The size or magnitude of a voltage or current waveform is

Which of the following is not a transmission medium?

After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?

Which file transfer protocol uses UDP?

You are working with a class C network. You are required to configure it for five subnets, each of which will support 25 nodes. What subnet should you use?

A network designer wants to connect 5 routers as point-to-point simplex line. Then the total number of lines required would be

Which of the following medium access control technique is used for bus/tree?

Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.

In a _____ topology, if there are n devices in a network, each device has n - 1 ports for cables.

To avoid transmission errors, a check figure is calculated by the

What is the first octet range for a class A IP address?

The main difference between TCP and UDP is

A specific part of an arithmetic &amp; logic unit that is used to perform the operation of multiplication is

Which of the following is used for input and output both

Character readers are those devices which read the characters printed on the source documents and then convert them directly into computer-usable input. Which of the following is not a character reader?

SPSS stands for

A specific part of an arithmetic & logic unit that is used to perform the operation of multiplication is