Computer Awareness Important MCQ,s JOA IT 939

 

Computer Awareness Questions

Fundamentals of Computer 100 MCQs

Q.1. A technique used by codes to convert an analog signal into a digital bit stream is known as

A.        Pulse code modulation

B.        Pulse stretcher

C.        Query processing

D.        Queue management

Ans. A

 

Q.2.  An optical input device that interprets pencil marks on paper media is

A.        O.M.R

B.        Punch card reader

C.        Optical scanners

D.        Magnetic tape

 

Ans. A

        

Q.3.  Any device that performs signal conversion is

A.        Modulator

B.        Modem

C.        Keyboard

D.        Plotter

 

Ans. B

 

Q.4. Which of the following computer language is used for artificial intelligence?

 A.          FORTRAN

 B.          PROLOG

 C.          C

 D.          COBOL

 

Ans. B

 

Q.5.  The binary system uses powers of

A.        2

B.        10

C.        8

D.        16

 

Ans. A

Q.6. Which part interprets program instructions and initiate control operations.

A.        Input

B.        Storage unit

C.        Logic unit

D.        Control unit

 

Ans. D

Q.7. A computer program that converts assembly language to machine language is

A.        Compiler

B.        Interpreter

C.        Assembler

D.        Comparator

 

Ans. C

 

Q.8. The time required for the fetching and execution of one simple machine instruction is

A.        Delay time

B.        CPU cycle

C.        Real time

D.        Seek time

 

Ans. B

 

Q.9. Any type of storage that is used for holding information between steps in its processing is

A.        CPU

B.        Primary storage

C.        Intermediate storage

D.        Internal storage

 

Ans. C

 

Q.10.  A common boundary between two systems is called

A.        Interdiction

B.        Interface

C.        Surface

D.        None of the above

 

Ans. B

 

Q.11 Which type of system puts the user into direct conversation with the computer through a keyboard?

A.        Real time processing

B.        Interactive computer

C.        Batch processing

D.        Time sharing

 

Ans. B

 

Q.12 A single packet on a data link is known as

A.        Path

B.        Frame

C.        Block

D.        Group

 

Ans. B

 

Q.13 The process of communicating with a file from a terminal is

A.        Interactive

B.        Interrogation

C.        Heuristic

D.        All of the above

 

Ans. B

 

Q.14 The examination and changing of single bits or small groups of his within a word is called

A.        Bit

B.        Byte

C.        Bit manipulation

D.        Bit slice

 

Ans. C

 

Q.15 Which computer has been designed to be as compact as possible?

A.        Mini

B.        Super computer

C.        Micro computer

D.        Mainframe

 

Ans. C

 

Q.16 Which method is used to connect a remote computer?

A.        Device

B.        Dialup

C.        Diagnostic

D.        Logic circuit

 

Ans. B

 

Q.17 The symbols used in an assembly language are

A.        Codes

B.        Mnemonics

C.        Assembler

D.        All of the above

 

Ans. B

Q.18 The 2's complement of a binary no. is obtained by adding.....to its 1's complement. 

A.        0

B.        1

C.        10

D.        12

 

Ans. 1

 

Q.19 Which of the following is still useful for adding numbers?

 A.        EDSAC

B.        ENIAC

C.        Abacus

D.        UNIVAC

 

 

Ans. C

 

Q.20 ASCII stands for

A.        American standard code for information interchange

 

B.        All purpose scientific code for information interchange

 

C.        American security code for information interchange

 

D.        American Scientific code for information interchange

 

Ans. A

  

Q.21 Compilers and interpreters are themselves

A.        High-level language

B.        Codes

C.        Programs

D.        Mnemonics

 

Ans. C

 

Q.22 A compiler means

 A.        A person who compiles source programs

B.        The same thing as a programmer

C.        Keypunch operator

D.        A program which translates source program into object program

 

Ans. D

Q.23 Compression of digital data for efficient storage is

 A.        Buffer

B.        CPU

C.        Packing

D.        Field

 

Ans. C

 

 Q.24 Computer memory consists of

 A.        RAM

B.        ROM

C.        PROM

D.        All of the above

 

Ans. D

 

Q.25 A path by which communication is achieved between a central processor and other devices is called

 A.        Audit trail

B.        Network

C.        Bus

D.        Channel

 

Ans. C

            

Q.26 A memory that does not change its contents without external causes is known as

A.        Dynamic memory

B.        Static memory

C.        RAM

D.        EEPROM

 

Ans. B

 

Q.27 The organisation and interconnection of the various components of a computer system is

A.        Architecture

B.        Networks

C.        Graphics

D.        Designing

 

Ans. A

 

Q.28 Which of the following is the coding of data so that is can't be easily understood if intercepted.

A.        Bar-code

B.        Decoder

C.        Encryption

D.        Mnemonics

 

Ans. C

Q.29 RAM is used as a short memory because it is 

A.        Volatile

B.        Has small capacity

C.        Is very expensive

D.        Is programmable

 

Ans. A

Q.30 Which is a device that changes information into digital form? 

A.        Modem

B.        Digitizer

C.        Mouse

D.        Light pen

 

Ans. B

 

Q.31 The first generation of computers available was based on the bit micro processors.

A.        4

B.        8

C.        16

D.        64

 

Ans. B

 

Q.32 The complete picture of data stored in database is known as

A.        Record

B.        Schema

C.        System flowchart

D.        DBMS

 

Ans. B

 

Q.33 A language which is close to that used within the computer is

A.        High-level language

B.        Assembly language

C.        Low-level language

D.        All of the above

 

Ans. C

 

Q.34 A pen shaped device which can sense light, and is used to point at spots on a video screen.

A.        Mouse

B.        Light pen

C.        Joystick

D.        Plotter

 

Ans. B

 

Q.35 Which printer uses a combination of laser-beam & electro photographic techniques.

A.        Laser printers

B.        Dot-Matrix

C.        Line printer

D.        Daisy wheel

 

Ans. A

 

Q.36. 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

 

Ans. A

 

Q.37 Control Unit of a digital computer is often called the

A.        Clock

B.        Nerve center

C.        ICs

D.        All of the above

 

Ans. B

 

Q.38. Human beings are referred to as Homosapiens. Which device is called Silico sapiens?

A.        Monitor

B.        Hardware

C.        Robot

D.        Computer

 

Ans. D

 

Q.39. Time during which a job is processed by the computer is

A.        Delay time

B.        Real time

C.        Execution time

D.        Down time

 

Ans. C

 

Q.40.  What is the name given to the molecular-scale computer?

A.        Femtocomputer

B.        Nanocomputer

C.        Supercomputer

D.        Microcomputer

 

Ans. B

 

Q.41 The two kinds of main Memory are:

A.        Primary and secondary

B.        Random and sequential

C.        ROM and RAM

D.        All of the above

 

 

Ans. C

 

Q.42 Programs designed to perform specific tasks is known as

A.        System software

B.        Application software

C.        Utility programs

D.        Operating system

 

Ans.  B

  

Q.43 The ALU of a computer normally contains a number of high speed storage elements called

A.        semiconductor memory

B.        registers

C.        hard disk

D.        magnetic disk

 

Ans. B

Q.44 The first electronic digital computer contained?

A.        Electronic valves

B.        Vacuum tubes

C.        Transistors

D.        Semiconductor memory

 

Ans. B

 

Q.45 The memory which is ultraviolet light erasable and electrically programmable is

A.        ROM

B.        PROM

C.        RAM

D.        EPROM

 

Ans. D

 

Q.46 The arranging of data in a logical sequence is called:

A.        sorting

B.        classifying

C.        reproducing

D.        summarizing

 

Ans. A

 

Q.47 A computer has a 1024K memory. What does the letter K stand for

A.        Kilometre

B.        Thousand

C.        1024

D.        MB

 

Ans. C

Q.48 The system unit of a personal computer typically contains all of the following except: 

A.        microprocessor

B.        disk controller

C.        serial interface

D.        modem

 

Ans. D

 

Q.49  1024 bytes represent a

A.        Megabyte

B.        Gigabyte

C.        Kilobyte

D.        None of the above

 

Ans. C

 

Q.50 The transistorised computer circuits were introduced in the

A.        First generation

B.        Second generation

C.        Third generation

D.        Fourth generation

 

Ans. B

 

Q.51 Who is the creator of the PASCAL language?

A.        Niklaus Wirth

B.        Dijkstra

C.        Donald Knuth

D.        Basic Pascal

 

Ans. A

 

Q.52 What is the name of the logic circuit which can add two binary digits?

A.        Full adder

B.        Half adder

C.        Buffer

D.        Register

 

Ans. B

 

Q.53    A memory bus is mainly used for communication between

A.        processor and memory

B.        processor and I/O devices

C.        I/O devices and memory

D.        input device and output device

 

Ans.  A

 

Q.54 To locate a data item for storage is

A.        Field

B.        Feed

C.        Database

D.        Fetch

 

Ans. D

 

Q.55 Which of the following devices can be used to directly input printed text?

A.        OCR

B.        OMR

C.        MICR

D.        All of the above

 

Ans. A

 

Q.56. Which part of the computer is used for calculating and comparing?

A.        Disk unit

B.        Control unit

C.        ALU

D.        Modem

 

Ans. C

 

Q.57 Dot-matrix is a type of

A.        Tape

B.        Printer

C.        Disk

D.        Bus

 

Ans. B

 

Q.58 Who designed the first general purpose electronic digital computer "ENIAC" ?

A.        Van-Neumann

B.        Joseph M Juoquard

C.        J. Presper Ecket and John W Mauchly

D.        All of the above

 

Ans. C

 

Q.59 A software package to perform calculations on data arranged in an array is

A.        System software

B.        Utility programs

C.        Electronic Spread sheet

D.        Application programs

 

Ans. C

 

Q.60 Which of the following chips can be reprogrammed with special electric pulses?

A.        EPROM

B.        PROM

C.        ROM

D.        EEPROM

 

Ans. D

 

Q.61 Which type device is a piece of equipment that receives information from a CPU?

A.        Input

B.        Output

C.        CPU

D.        Memory

 

Ans. B

 

Q.62 A temporary storage area, attached to the CPU, for I/O operations is a:

A.        chip

B.        buffer

C.        register

D.        core

 

Ans. B

 

Q.63 Which kind of devices allows the user to add components and capabilities to a computer system?

A.        Storage devices

B.        Input devices

C.        Output devices

D.        Expansion slots

 

Ans. D

 

Q.64 What was the name of the first stored program electronic computer which was built in 1949 at Cambridge University in England?

A.        EDVAC

B.        EDSAC

C.        UNIVAC

D.        MARK-I

 

Ans. B

           

Q.65 A computer with CPU speed around 100 million instructions per second & with the word length of around 64 bits is known as

A.        Super computer

B.        Mini computer

C.        Micro computer

D.        Mainframe computer

 

Ans. A

 

Q.66 The ALU of a central processing unit does the essential maths work for the computer. What does the control unit do?

A.        Communicates its results

B.        Activates the output device

C.        Monitors the flow of information

D.        Control the printer

 

Ans. C

 

Q.67 What does that acronym VGA stand for?

A.        Extended Graphics Adapter

B.        Enhanced Graphics Array

C.        Video Graphics Array

D.        Video Graphics Adaptor

 

Ans. C

 

Q.68 The storage locations in the internal storage of a CPU are called

A.        contents

B.        addresses

C.        locations

D.        mask

 

Ans. B

 

Q.69 A 32 bit microprocessor has the word length equal to

A.        2 bytes

B.        32 bytes

C.        4 bytes

D.       8 bytes

 

Ans. C

Q.70 In simplex transmission 

A.        Data format is simple

B.        Data transmission is one way

C.        Data can be transmitted to small distances only

D.        All of the above

 

Ans. B

 

Q.71. The process of writing computer instructions in a programming language is known as

A.        Coding

B.        Processing

C.        Programming

D.        File

 

Ans.  A

             

Q.72. A typical modern computer uses

A.        LSI chips

B.        Vacuum tubes

C.        Valves

D.        All the above

 

Ans. A

Q.73. The terminal device that functions as a cash register, computer terminal, and OCR reader is the: 

A.        Data collection terminal

B.        OCR register terminal

C.        Video display terminal

D.        POS terminal

 

Ans. D

           

Q.74. In MODEMS

A.        Several digital signals are multiplexed

B.        A digital signal changes some characteristic of a carrier wave

C.        Digital signal is amplified

D.        All of the above

 

Ans. B

 

Q.75. When an input electrical signal A=10100 is applied to a NOT gate, its output signal is

A.        01011

B.        10001

C.        10101

D.        00101

 

Ans. A

 

Q 76. Which of the following printer can be classified as a page-at-a-time printer?

A.        Laser printer

B.        Dot-matrix printer

C.        Thermal printer

D.        Inkjet printer

 

Ans. A

 

Q.77.  The first microprocessor built by the Intel Corpn. was called

A.        8008

B.        8080

C.        4004

D.        8800

 

Ans. C

 

Q.78.   Personal computers use a number of chips mounted on a main circuit board. What is the common name for such boards?

A.        Daughterboard

B.        Motherboard

C.        Fatherboard

D.        Breadboard

 

Ans. B

 

Q 79. The term gigabyte refers to

A.        1024 bytes

B.        1024 kilobytes

C.        1024 megabytes

D.        1024 gigabytes

 

Ans. C

 

Q.80.  The CPU chip used in a computer is partially made out of

A.        silica

B.        carbon

C.        copper

D.        gold

 

Ans. A

 

Q.81. The equipment with which the computer talks to its users is called a

A.        word processor

B.        peripheral

C.        software

D.        diskette

 

Ans. B

           

Q.82. A large number of computers in a wide geographical area can be efficiently connected using

A.        Twisted pair lines

B.        Coaxial cables

C.        Communications satellites

D.        All of the above

 

Ans. C

Q.83. In latest generation computers, the instructions are executed 

A.        Parallely only

B.        Sequentially only

C.        Both sequentially an parallely

D.        All of the above

 

Ans. C

 

Q.84. Which is used for manufacturing chips?

A.        Bus

B.        Control unit

C.        Semiconductors

D.        (a) and (b) only

 

Ans. C

 

Q.85. How many bits can be stored in the 8K RAM? 

A.        8000

B.        8192

C.        4000

D.        4096

 

Ans. B

 

Q.86. Which was the first computer to use transistors instead of vacuum tubes?

A.        Intel-650

B.        Burroughs E-101

C.        Datamatic-1000

D.        IBM-1401

 

Ans. D

 

Q.87.  A CPU's processing power is measured in:

A.        IPS

B.        CIPS

C.        MIPS

D.        nano-seconds

 

Ans. C

 

Q.88. Which of the following Indian companies designs and manufactures super- computers?

A.        C-DOT

B.        C-DAC

C.        CMC

D.        All of the above

 

Ans. B

 

Q.89.  Which of the following memories needs refresh?

A.        SRAM

B.        DRAM

C.        ROM

D.        All of the above

 

Ans. B

 

Q.90.  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

 

Ans. B

Q.91 The term MIPS refers to _____ 

A.        millions of instructions per second

B.        multiple instructions per second

C.        megabytes of instructions per seconds

D.        millions input processor set

 

Ans. A

 

Q.92. Who invented the microprocessor?

A.        Marcian E Hoff

B.        Herman H Goldstein

C.        Joseph Jacquard

D.        All of the above

 

Ans. A

 

Q.93.  The shifting of a program from one of the memory addresses to another is

A.        Data transmission

B.        Data collection

C.        Relocation

D.        Database

 

Ans. C

 

Q.94.  What was the computer conceived by Charles Babbage?

A.        Analytical Engine

B.        Arithmetic Machine

C.        Donald Knuth

D.        All of the above

 

Ans. A

Q.95.  Where was the India's first computer installed and when? 

A.        Institute of Social Science, Agra, 1955

B.        Indian Institute of Statistics, Delhi, 1957

C.        Indian Statistical Institute, Calcutta, 1955

D.        Indian Institute of Science, Bangalore, 1971

 

Ans. C

Q.96. Which of the following is the smallest visual element on a video monitor? 

A.       Character

B.        Pixel

C.        Byte

D.        Bit

 

Ans. B

 

Q.97. Which one of the following is not a form of data storage media?

A.          Database

B.          Magnetic tape

C.         Magnetic disc

D.         Optical disc

 

Ans. A

 

Q.98. What is the full form of USB?

A.          Unshielded System Board

B.          Universal System Board

C.          Unidentified System Bus

D.          Universal System Bus

 

 

Ans. D

 

Q.99. The speed of a modern printer is generally measured in __________.

A.        LPS

B.        PPM

C.        PPS

D.        DPI

 

Ans. B

 

Q.100. Which of the following statement is correct about the PCI?

A.          PCI is a hardware device.

B.          PCI is software that is used to transfer the    data.

C.          PCI is an interface of the OS.

D.         All of the these

 

 

Ans. A