2100+ Important Computer MCQs For Competitive Exams part-1 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) , Indian Administrative Service (IAS) .

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351.	CLASS is the acronym for
A.	Computer, Language and School Studies
B.	Computer, Literacy and Studies in Schools
C.	Computer, Language and Secondary Schools
D.	Computer, Learning and School Studies
E.	None of these
Answer» B. Computer, Literacy and Studies in Schools

discuss

352.	SITE stands for
A.	Satellite Instructional Technology and Engineering
B.	State Institute of Teacher Education
C.	Satellite Instructional Television Experiment
D.	State Institute of Technology and Engineering
E.	None of these
Answer» C. Satellite Instructional Television Experiment

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353.	Cloud computing means
A.	Computing using the satellite
B.	Computing using cloud chamber technology
C.	Computing which results in errors
D.	Shifting computing power from offline PCs and Laptops onto the Web
E.	None of these
Answer» D. Shifting computing power from offline PCs and Laptops onto the Web

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354.	The ‘C’ language is
A.	Context free language
B.	Context sensitive language
C.	Regular language
D.	Assembly language
E.	None of these
Answer» A. Context free language

discuss

355.	What is the size of the Unicode character in Windows Operating System?
A.	8-bits
B.	16-bits
C.	32-bits
D.	64-bits
E.	None of these
Answer» C. 32-bits

discuss

356.	Data Encryption Techniques are particularly used for
A.	protecting data in Data Communication System.
B.	reduce Storage Space Requirement
C.	enhances Data Integrity.
D.	decreases Data Integrity
E.	None of these
Answer» A. protecting data in Data Communication System.

discuss

357.	_ is an “umbrella” activity that is applied throughout the software engineering process.
A.	Debugging
B.	Testing
C.	Designing
D.	Software Quality Assurance
E.	None of these
Answer» D. Software Quality Assurance

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358.	Use of icons and windows are characteristic of a interface
A.	command-driven
B.	windows-oriented
C.	graphical-user
D.	menu-driven
E.	None of these
Answer» C. graphical-user

discuss

359.	The essential difference between an operating system like Linux and one like Windows is that
A.	Windows can run with an Intel processor, whereas Linux cannot
B.	Linux is proprietary, whereas Windows is not
C.	Any programmer can modify Linux code, which is not permitted with Windows
D.	there are multiple versions of Linux, but only one version of Windows
E.	None of these
Answer» C. Any programmer can modify Linux code, which is not permitted with Windows

discuss

360.	The category of operating system that you most likely have running on your PDA computer is a ………..operating system
A.	real-time
B.	single-user, single-task
C.	single-user, multi-task
D.	multi-user, multi-task
E.	None of these
Answer» B. single-user, single-task

discuss

361.	The barcode which is used on all types of items is read by a scanning device directly into the computer. What is the name of this scanning device?
A.	Laser Scanner
B.	Wand
C.	OCR
D.	MICR
E.	None of these
Answer» A. Laser Scanner

discuss

362.	Which of the following is not a method to preserve the security and integrity of information?
A.	Antivirus software
B.	Firewall
C.	Phishing
D.	Disk Encryption
E.	Backup
Answer» C. Phishing

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363.	In computer science, by information we mean
A.	Any output coming out from computer
B.	Processed data put in an intelligent form
C.	A report printed by the computer
D.	Plural of data
E.	None of these
Answer» B. Processed data put in an intelligent form

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364.	Which of the following features distinguishes a database file from a mere collection of data
A.	Database enables data to be organized for effective use much faster
B.	It organizes data in rows and columns
C.	It gives reference name to each file created
D.	It provides search facility
E.	None of these
Answer» A. Database enables data to be organized for effective use much faster

discuss

365.	Who coordinates the sequencing of events within the central processor of a computer?
A.	Logic unit
B.	Arithmetic unit
C.	Register
D.	Control Unit
E.	None of these
Answer» D. Control Unit

discuss

366.	The microprocessor of a computer cannot operate on any information if that information is not in its
A.	secondary storage
B.	main storage
C.	ALU
D.	Logic unit
E.	None of these
Answer» B. main storage

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367.	Where have the program and data to be located before the ALU and control unit of a computer can operate on it?
A.	Internal memory
B.	Secondary memory
C.	Microprocessor
D.	Magnetic tapes
E.	None of these
Answer» A. Internal memory

discuss

368.	The only things moving around inside a computer are
A.	Is and Os
B.	electrons
C.	bytes
D.	proton
E.	None of these
Answer» B. electrons

discuss

369.	The data between the computer and peripherals always passes via in input/output
A.	port
B.	A/D converter
C.	D/A converter
D.	buffer memory
E.	None of these
Answer» A. port

discuss

370.	Preparing a magnetic disk for data storage is called
A.	booting
B.	formatting
C.	debugging
D.	commissioning
E.	None of these
Answer» B. formatting

discuss

371.	How many full adders are needed to add two 4-bit numbers with a parallel adder?
A.	8
B.	4
C.	2
D.	16
E.	None of these
Answer» B. 4

discuss

372.	If you see a diskette with a piece of foil covering its notch, it is said to be
A.	write-protected
B.	copy-protected
C.	write-enabled
D.	foil-covered
E.	None of these
Answer» A. write-protected

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373.	What is the name of the screen symbol that shows the placement of the next character?
A.	Mouse
B.	Cursor
C.	Track ball
D.	Graphic tablet
E.	None of these
Answer» B. Cursor

discuss

374.	Point out the odd item amongst the following
A.	computer mouse
B.	touchpad
C.	light pen
D.	printer
E.	None of these
Answer» D. printer

discuss

375.	The very small and cheap computer built into many home devices is called computer. memory, tape or disk memory is
A.	slower and more expensive
B.	slower and less expensive
C.	faster and more expensive
D.	faster and less expensive
E.	None of these
Answer» B. slower and less expensive

discuss

376.	What is the main advantage of magnetic core memory over semiconductor RAM memory?
A.	More compact and smaller
B.	More economical
C.	A it does not have to write after reading
D.	Non-volatile
E.	None of these
Answer» D. Non-volatile

discuss

377.	Which of the following memories contains a thin film of magnetic material sandwitched between two permanent bias magnets?
A.	ROM
B.	Magnetic disk
C.	Core memory
D.	Bubble memory
E.	None of these
Answer» C. Core memory

discuss ⁽¹⁾

378.	The minimum time delay required between the initiation of two successive memory operations is known as
A.	memory cycle time
B.	memory access time
C.	transmission time
D.	waiting time
E.	None of these
Answer» A. memory cycle time

discuss

379.	When the time to establish link is large and the size of data is small, the preferred mode of data transfer is
A.	circuit switching
B.	packet switching
C.	time division multiplexing
D.	All of these
E.	None of these
Answer» B. packet switching

discuss

380.	In circuit switching
A.	data is stored at intermediate nodes
B.	transmission path is set before data transfer
C.	dedicated communication link is not required
D.	All of these
E.	None of these
Answer» B. transmission path is set before data transfer

discuss

381.	Which of the following PC user must have a special hardware device that is to linkup with a bulletin board system?
A.	ALU
B.	Control Unit
C.	Modem
D.	Light Pen
E.	None of these
Answer» C. Modem

discuss

382.	A single primary storage location in the processor unit
A.	can hold several different data items at the same time
B.	can hold data items but not program instructions
C.	is identified by a built-in and unique number called an address
D.	is identified by a number that varies with the contents in the location.
E.	None of these
Answer» C. is identified by a built-in and unique number called an address

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383.	A large computer designed to handle complex scientific calculations
A.	may use only a firmed word-length storage approach
B.	will likely require a character addressable storage unit
C.	must use fixed length words of four character each
D.	will not use numbered address locations
E.	None of these
Answer» A. may use only a firmed word-length storage approach

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384.	Methods used to organize and physically store disk data are cylinder and
A.	sector
B.	surface
C.	track
D.	hib
E.	None of these
Answer» A. sector

discuss

385.	Magnetic storage chips have no moving parts, and they provide nonvolatile direct- access storage of data.
A.	Tape
B.	Disk
C.	Ink character
D.	Bus
E.	None of these
Answer» A. Tape

discuss

386.	A class of random access memory that requires periodic servicing in order for, the contents to remain valid is
A.	Static RAM
B.	Dynamic RAM
C.	PROM
D.	EPROM
E.	None of these
Answer» B. Dynamic RAM

discuss

387.	A sequence of microinstruction is
A.	machine code
B.	microcode
C.	mnemonics
D.	gray code
E.	None of these
Answer» B. microcode

discuss

388.	A specific part of an arithmetic and logic unit that is used to perform the operation of multiplication is
A.	multiplier
B.	multiplener
C.	multivibrator
D.	quantization
E.	None of these
Answer» A. multiplier

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389.	Which of the following belongs to the first generation of computer?
A.	HNIAC
B.	IBM 1401
C.	IBM 8090
D.	UNI VAC
E.	None of these
Answer» D. UNI VAC

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390.	A typical modern computer uses
A.	LSI chips
B.	vacuum tubes
C.	valves
D.	All these
E.	None of these
Answer» A. LSI chips

discuss

391.	Which kind of hardware is used the most in the input phase of a computer-based information system?
A.	Keyboard
B.	Printer
C.	Monitor
D.	Hard disk
E.	None of these
Answer» A. Keyboard

discuss

392.	Which kind of device allows the user to add components and capabilities to a computer system?
A.	System boards
B.	Storage devices
C.	Input devices
D.	Expansion slots
E.	None of these
Answer» D. Expansion slots

discuss

393.	Which of the following persons probably has the least amount of technical knowledge?
A.	User
B.	Computer operator
C.	System Analyst
D.	Programmer
E.	None of these
Answer» A. User

discuss

394.	Which of the following is not true for primary storage?
A.	Information must be transferred to primary storage
B.	It is relatively more expensive
C.	It allows very fast access to data
D.	It is less expensive
E.	None of these
Answer» E. None of these

discuss

395.	In a generic microprocessor, instruction cycle time is
A.	shorter than machine cycle time
B.	larger than machine cycle time
C.	exactly double the machine cycle time
D.	exactly the same as the machine cycle time
E.	None of these
Answer» B. larger than machine cycle time

discuss

396.	The cyclic codes are used in
A.	arithmetic and logical computations
B.	data transfer
C.	continuously varying signal representation
D.	All of these
E.	None of these
Answer» C. continuously varying signal representation

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397.	The operation of a digital computer is based on principle.
A.	Counting
B.	Measuring
C.	Electronic
D.	Logical
E.	None of these
Answer» A. Counting

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398.	The personal computers are also called
A.	desk top computers
B.	palmtop computers
C.	advanced computers
D.	portable computers
E.	None of these
Answer» A. desk top computers

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399.	Which of the following is a group of related characters that are treated as a single unit?
A.	Array
B.	File
C.	Field
D.	Block
E.	None of these
Answer» C. Field

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400.	The person who writes instruction that tell the computer how to handle input information is
A.	data entry operator
B.	computer programmer
C.	computer operator
D.	keypunch operator
E.	None of these
Answer» B. computer programmer

discuss

2100+ Important Computer MCQs For Competitive Exams part-1 Solved MCQs

CLASS is the acronym for

SITE stands for

Cloud computing means

The ‘C’ language is

What is the size of the Unicode character in Windows Operating System?

Data Encryption Techniques are particularly used for

_ is an “umbrella” activity that is applied throughout the software engineering process.

Use of icons and windows are characteristic of a interface

The essential difference between an operating system like Linux and one like Windows is that

The category of operating system that you most likely have running on your PDA computer is a ………..operating system

The barcode which is used on all types of items is read by a scanning device directly into the computer. What is the name of this scanning device?

Which of the following is not a method to preserve the security and integrity of information?

In computer science, by information we mean

Which of the following features distinguishes a database file from a mere collection of data

Who coordinates the sequencing of events within the central processor of a computer?

The microprocessor of a computer cannot operate on any information if that information is not in its

Where have the program and data to be located before the ALU and control unit of a computer can operate on it?

The only things moving around inside a computer are

The data between the computer and peripherals always passes via in input/output

Preparing a magnetic disk for data storage is called

How many full adders are needed to add two 4-bit numbers with a parallel adder?

If you see a diskette with a piece of foil covering its notch, it is said to be

What is the name of the screen symbol that shows the placement of the next character?

Point out the odd item amongst the following

The very small and cheap computer built into many home devices is called computer. memory, tape or disk memory is

What is the main advantage of magnetic core memory over semiconductor RAM memory?

Which of the following memories contains a thin film of magnetic material sandwitched between two permanent bias magnets?

The minimum time delay required between the initiation of two successive memory operations is known as

When the time to establish link is large and the size of data is small, the preferred mode of data transfer is

In circuit switching

Which of the following PC user must have a special hardware device that is to linkup with a bulletin board system?

A single primary storage location in the processor unit

A large computer designed to handle complex scientific calculations

Methods used to organize and physically store disk data are cylinder and

Magnetic storage chips have no moving parts, and they provide nonvolatile direct- access storage of data.

A class of random access memory that requires periodic servicing in order for, the contents to remain valid is

A sequence of microinstruction is

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

Which of the following belongs to the first generation of computer?

A typical modern computer uses

Which kind of hardware is used the most in the input phase of a computer-based information system?

Which kind of device allows the user to add components and capabilities to a computer system?

Which of the following persons probably has the least amount of technical knowledge?

Which of the following is not true for primary storage?

In a generic microprocessor, instruction cycle time is

The cyclic codes are used in

The operation of a digital computer is based on principle.

The personal computers are also called

Which of the following is a group of related characters that are treated as a single unit?

The person who writes instruction that tell the computer how to handle input information is