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4

To prevent the loss of data during power failures, use a(n):

A. Encryption program.

B. Surge protector.

C. Firewall.

D. UPS.

Correct Answer :

D. UPS.


Related Questions

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The two kinds of main memory are:

A. Primary and secondary

B. Random and sequential

C. ROM and RAM

D. All of above

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4

When was vacuum tube invented?

A. 1900

B. 1906

C. 1910

D. 1880

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4

In what respect computers are superior to human beings?

A. Diligence

B. Intelligence

C. Both of above

D. None of above

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4

Number crunchier is the informal name for

A. Minicomputer

B. Super computer

C. Microcomputer

D. Mainframe computer

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4

How many address lines are needed to address each machine location in a 2048 x 4 memory chip?

A. 10

B. 11

C. 8

D. 12

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4

When did John Napier develop logarithm?

A. 1416

B. 1614

C. 1641

D. 1804

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4

Which method is used to connect a remote computer?

A. Device

B. Dialup

C. Diagnostic

D. Logic circuit

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Which statement is valid about interpreter?

A. It translates one instruction at a time

B. Object code is saved for future use

C. Repeated interpretation is not necessary

D. All of above

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4

Which number system is usually followed in a typical 32-bit computer?

A. Binary

B. Decimal

C. Hexadecimal

D. Octal

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4

The ALU of a computer normally contains a number of high speed storage element called

A. Semiconductor memory

B. Registers

C. Hard disks

D. Magnetic disk

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4

What is an interpreter?

A. An interpreter does the conversion line by line as the program is run

B. An interpreter is the representation of the system being designed

C. An interpreter is a general purpose language providing very efficient execution

D. None of the above

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4

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

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4

High density double sided floppy disks could store _____ of data

A. 1.40 GB

B. 1.44 MB

C. 1.40 MB

D. 1.44 GB

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4

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

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4

A hybrid computer

A. Resembles digital computer

B. Resembles analogue computer

C. Resembles both a digital and analogue computer

D. None of the above

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Which of the following statement is false?

A. Mechanical analog computers have existed for thousands of years

B. There are mechanical analog computers and electronic analog computers.

C. All electronic computers are digital computers

D. All of above are false

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4

The most common type of storage devices are-

A. Steel

B. optical

C. magnetic

D. flash

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The number of records contained within a block of data on magnetic tape is defined by the

A. Block definition

B. Record contain clause

C. Blocking factor

D. Record per block

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4

Unwanted repetitious messages, such as unsolicited bulk e-mail is known as

A. Spam

B. Trash

C. Calibri

D. Courier

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4

Which unit converts computer data into human readable form?

A. Input unit

B. Output unit

C. ALU

D. Control Unit

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4

Which of the following professions has not been affected by personal computers?

A. Medical

B. Clerical and law

C. Accounting

D. None of the above

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4

CAD stands for

A. Computer aided design

B. Computer algorithm for design

C. Computer application in design

D. Computer analogue design

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A high quality CAD system uses the following for printing drawing and graphs

A. Dot matrix printer

B. Digital plotter

C. Line printer

D. All of the above

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Multi user systems provided cost savings for small business because they use a single processing unit to link several

A. Personal computers

B. Workstations

C. Dumb terminals

D. Mainframes

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4

Signals can be analog or digital and a computer that processes the both type of signals is known as

A. Analog computer

B. Digital Computer

C. Hybrid Computer

D. Mainframe Computer

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4

How many types of storage loops exists in magnetic bubble memory

A. 8

B. 4

C. 16

D. 2

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4

Codes consisting of lines of varying widths or lengths that are computer-readable are known as-

A. an ASCII code

B. a magnetic tape

C. an OCR scanner

D. a bar code

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4

ALU is

A. Arithmetic Logic Unit

B. Array Logic Unit

C. Application Logic Unit

D. None of above

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4

Which of the following is input device?

A. scanner

B. speaker

C. monitor

D. projector

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Binary circuit elements have

A. One stable state

B. Two stable state

C. Three stable state

D. None of above