General Computer Test - 19

 

1. Why do magnetic tape drives for minicomputers use vacuum columns?

(a)    For quick acceleration and deacceleration of the tape

(b)    For immediate starting and stopping of the tape

(c)     To avoid stress in the tape

(d)    To provide extra tape length

(e)    None of these

Ans : (c)

2. What is the name of the visible silver rectangle which separates the take-up portion of the magnetic tape from the data recording portion?

(a)    Load maker

(b)    Load marker

(c)     Tape separator

(d)    Tape marker

(e)    None of these

Ans : (a)

3. The data on the tracks on a magnetic disk are written as

(a)    up or down

(b)    tiny magnetic spots

(c)     0 or 1

(d)    high or low voltage

(e)    None of these

Ans : (b)

4. Which memory is nonvolatile and may be written only once?

(a)    RAM

(b)    EE-ROM

(c)     RAM

(d)    PROM

(e)    None of these

Ans : (d)

5. Which of the following statements is wrong?

(a)    An EPROM can be programmed, erased and reprogrammed by the user with an EPROM programming instrument

(b)    Magnetic tape is non volatile

(c)     Magnetic core and semiconductor memories

(d)    RAM is a type of volatile memory

(e)    None of these

Ans : (c)

6. For a memory system, the cycle time is

(a)    same as the access time

(b)    longer than the access time

(c)     shorter than the access time

(d)    submultiple of the access time

(e)    None of these

Ans : (b)

7. The process of fetching and executing instructions, one at a time, in the order of increasing addresses is known as

(a)    instruction execution

(b)    straight line sequencing

(c)     instruction fetch

(d)    random sequencing

(e)    None of these

Ans : (b)

8. Non-volatility is an important advantage of

(a)    CCD’s

(b)    magnetic tapes and disks

(c)     magnetic bubbles

(d)    both (b) and (c)

(e)    None of these

Ans : (d)

9. The general range of speed in revolutions per minute (rpm) at which floppy disks rotate is

(a)    2400-4700

(b)    390-600

(c)     150-250

(d)    300-600

(e)    None of these

Ans : (c)

10. Main memory contains

(a)    data

(b)    instructions

(c)     both (a) and (b)

(d)    either (a) and (b)

(e)    None of these

Ans : (c)

12. Which access method is used for obtaining a record from a cassette tape?

(a)    Direct

(b)    Sequential

(c)     Random

(d)    All of these

(e)    None of these

Ans : (b)

13. Two new types of semiconductor memories are

(a)    magnetic disks

(b)    charge-coupled devices

(c)     magnetic bubble memory

(d)    both (b) and (c)

(e)    None of these

Ans : (d)

14. The word ‘serial’ describes

(a)    an inexpensive card reader that reads one column at a time

(b)    a character-by-character transfer of data between an input/output or auxiliary storage unit and a channel

(c)     is a serial communication physical interface through which information transfers in or out one bit at a time

(d)    both (a) and (b)

(e)    None of these

Ans : (d)

15. The largest of the four conceptual areas of storage is likely to be the

(a)    program area

(b)    output area

(c)     working area

(d)    input area

(e)    None of these

Ans : (a)

16. In half-duplex data transmission

(a)    data can be transmitted in one direction only

(b)    data can be transmitted in both directions

(c)     data can be transmitted in both directions simultaneously

(d)    data cannot be transmitted

(e)    None of these

Ans : (b)

17. A lever used to control the movement of a cursor on a video screen is

(a)    keyboard

(b)    Joy stick

(c)     light pen

(d)    plotter

(e)    None of these

Ans : (b)

18. In synchronous transmission data from various users

(a)    require header

(b)    do not require header

(c)     sometimes require header

(d)    All of these

(e)    None of these

Ans : (b)

19. The personal computers are also called

(a)    desk top computers

(b)    palmtop computers

(c)     advanced computers

(d)    portable computers

(e)    None of these

Ans : (a)

20. To set a register or counter to the all-zero- state is

(a)    rerun

(b)    reset

(c)     remote

(d)    release

(e)    None of these

Ans : (b)

21. A device for entering X-Y co-ordinates is known as

(a)    card reader

(b)    cassette tape

(c)     multiplexer

(d)    joystick

(e)    None of these

Ans : (d)

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

(a)    EDSAC

(b)    ENIAC

(c)     Abacus

(d)    UNIVAC

(e)    None of these

Ans : (c)

23. Which unit decodes information and present to the user?

(a)    ALU

(b)    Storage unit

(c)     Output unit

(d)    Control unit

(e)    None of these

Ans : (c)

24. Main storage is also called

(a)    accumulator

(b)    control unit

(c)     register unit

(d)    memory

(e)    None of these

Ans : (d)

25. Most important advantage of an IC is its

(a)    easy replacement in case of circuit failure

(b)    extremely high reliability

(c)     reduced cost

(d)    low power consumption

(e)    None of these

Ans : (b)

General Computer Test - 18

 

1. Touchpads are particularly popular with microcomputer users who cannot

(a)    read

(b)    type

(c)     see

(d)    hear

(e)    None of these

Ans : (b)

2. A trackball is manipulated by

(a)    palm

(b)    foot

(c)     fingers

(d)    sound

(e)    None of these

Ans : (a)

3. The function of CPU is

(a)    to provide a hard copy

(b)    to read, interpret and process the information and instruction

(c)     to communicate with the operator

(d)    to provide external storage of text

(e)    None of these

Ans : (b)

4. Which one of the following is termed a combination input-output device?

(a)    VDT

(b)    Keyboard

(c)     Printer

(d)    Laser Jet

(e)    None of these

Ans : (a)

5. 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

Ans : (a)

6. The optical technique that uses lasers is

(a)    photodigital storage

(b)    EBAM storage

(c)     CCD storage

(d)    cryogenic storage

(e)    None of these

Ans : (a)

7. The disadvantages of a direct access file is

(a)    the delay in computing the storage address

(b)    duplication of address locations

(c)     unused, hut available, storage locations

(d)    All of these

(e)    None of these

Ans : (d)

8. A complete set of programs for one specific data processing application is called

(a)    utility application

(b)    canned program

(c)     program package

(d)    both (b) and (c)

(e)    None of these

Ans : (c)

9. 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 these

Ans : (a)

10. An advantage of overlapped processing activities is

(a)    more effective use of the CPU

(b)    increased processing activities for the entire system

(c)     better coordination of I/O activities

(d)    All of these

(e)    None of these

Ans : (d)

11. 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 these

Ans : (c)

12. The mechanical diskette drive in which you insert your diskette is connected to the computer’s bus

(a)    Data

(b)    Communication

(c)     Address

(d)    Parallel

(e)    None of these

Ans : (b)

13. The number of tracks on a 1/2 inch wide magnetic tape is

(a)    1

(b)    9

(c)     18

(d)    either bare

(e)    None of these

Ans : (d)

14. What is the most common speed in rpm at which the hard disks usually rotate?

(a)    2400

(b)    3600

(c)     4700

(d)    1600

(e)    None of these

Ans : (b)

15. Disk units that use unremovable platters are called

(a)    unremovable disks

(b)    hard disks

(c)     sealed disks

(d)    high-density disks

(e)    None of these

Ans : (b)

16. Before you stored anything on a disk, it has to be

(a)    cleansed

(b)    formatted

(c)     initialized

(d)    either (a) or (b)

(e)    None of these

Ans : (b)

17. What is the name of the screen pointing device that rolls on bearings and has one or more buttons on its top?

(a)    Track ball

(b)    Mouse

(c)     Light pen

(d)    Joy-stick

(e)    None of these

Ans : (b)

18. Character readers are those devices which read the characters printed on the source documents and then convert them directly into computer-usable input.

(a)    OCR

(b)    MICR

(c)     OMR

(d)    LCD

(e)    None of these

Ans : (d)

19. All calculations are performed and all comparisons are made in unit

(a)    control unit

(b)    arithmetic-logic unit

(c)     central processing unit

(d)    primary storage unit

(e)    None of these

Ans : (a)

20. A certain computer hardware component does not process the data itself but acts as a central nervous system for other data manipulating components. What is it called?

(a)    ALU (b) RAM

(b)    Control Unit

(c)     Secondary storage

(d)    None of these

Ans : (c)

21. A logic is an electronic circuit which

(a)    makes logic decisions

(b)    allows electron flow only in one direction

(c)     works on binary algebra

(d)    works on float numbers

(e)    None of these

Ans : (a)

23. A code used for standardizing the storage and transfer of information amongst various computing devices is called

(a)    CRT

(b)    CPU

(c)     ASCII

(d)    Dvorak

(e)    None of these

Ans : (c)

24. As compared to a magnetic tape, the main advantage of magnetic disk is its

(a)    rigidity

(b)    direct access

(c)     low cost

(d)    high packing density

(e)    None of these

Ans : (b)

25. What is the size of the optical compact disk which is used for recording high quality music?

(a)    4.7 inch

(b)    3.5 inch

(c)     5.5 inch

(d)    8.7 inch

(e)    None of these

Ans : (a)