Computer Codes Questions

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11.

EBCDIC can code up to how many different characters?

A

8

B

16

C

32

D

64

E

256

Correct Answer: E

None.

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12.

The most commonly used standard data code to represent alphabetical, numerical and punctuation characters used in Electronic Data Processing system is called

A

ASCII

B

EBCDII

C

BCD

D

All of the above

E

None of the above

Correct Answer: A

None.

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13.

A code which uses more bits for each character then what is necessary is known as

A

Hollerith code

B

Gray code

C

Redundant code

D

Mnemonics

E

None of the above

Correct Answer: C

None.

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14.

A family of polynomial block codes designed to correct burst errors is known as

A

Bar codes

B

Gray codes

C

Fire codes

D

mnemonics codes

E

None of the above

Correct Answer: C

None.

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15.

The computer code for the interchange of information between terminals is

A

ASCII

B

BCD

C

EBCDIC

D

All of the above

E

None of the above

Correct Answer: A

None.

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16.

Which is not necessary when using bar codes in supermarkets?

A

Point-of sale (POS) terminal

B

Check digit on the bar code

C

Price on the shelf

D

Price on the goods

E

None of the above

Correct Answer: C

None.

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17.

The 7-bit ASCII code widely used

A

For data communication work

B

In IBM mainframe models

C

For coding external memory

D

In large machines produced by non-IBM vendors

E

None of the above

Correct Answer: A

None.

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18.

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

Correct Answer: B

None.

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19.

Which of the following is a machine for reading documents that are encoded in a way that is readable by person and machine.

A

Document reader

B

Distributed system

C

Artificial intelligence

D

Document sorter

E

None of the above

Correct Answer: A

None.

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20.

How many symbols exist in Baudot code?

A

42

B

116

C

58

D

76

E

None of the above

Correct Answer: C

None.

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