Lexical Analysis Questions

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31.

System program such a compiler are designed so that they are ________

A

Re-enterable

B

Non-Usable

C

Serially usable

D

None of the above

Correct Answer: A

For the convince of the user compilers are made re-enterable.

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32.

Which concept of grammer is use in the compiler

A

Parser

B

Code Optimization

C

Lexical analysis

D

Code generation

Correct Answer: A

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33.

Object program is a

A

Translation of high-level language into maching language

B

Program to be translated into machine language

C

Program written in machine language

D

None of the mentioned

Correct Answer: A

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34.

The symbol table implementation is based on the property of localitly of reference is

A

Hash Table

B

Self Organisation

C

Linear List

D

None of the above

Correct Answer: A

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35.

What goes over the characters of the lexeme to produce a value?

A

Scanner

B

Lexical generator

C

Parser

D

Evaluator

Correct Answer: A

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36.

Two important lexical categories are

A

White Space & Comments

B

White Space

C

Comments

D

None of the mentioned

Correct Answer: A

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37.

Which grammar defines Lexical syntax

A

Lexical Grammar

B

Context Free Grammar

C

Regular Grammar

D

None of the above

Correct Answer: A

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38.

When expression sum=3+2 is tokenized then what is the category of 3.

A

Integer Literal

B

Addition Operator

C

Identifier

D

None of the above

Correct Answer: A

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39.

It has encoded within it information on the possible sequences of characters that can be contained within any of the token it handles. Above mentioned function is performed by ?

A

Syntactic Analyser

B

Parser

C

Scanner

D

All of the mentioned

Correct Answer: C

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40.

A programmer, by mistake, writes an instruction to divide, instead of a multiply, such error can be detected by a/an

A

compiler 

B

Interpreter

C

compiler or Interpreter test

D

None of these

Correct Answer: D

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