Lexical Analysis Questions

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41.

A system is a program that

A

places  programs into memory and prepares them for execution

B

automates the translations of assembly language into machine language

C

accepts a program written in a high level language and produce an object program

D

None of the above

Correct Answer: C

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42.

The process of forming tokens from an input stream of characters is called_______

A

Tokenization

B

Liberalization

C

Characterisation

D

None of the mentioned

Correct Answer: A

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43.

In an absolute loading scheme, which load function is accomplished by programmer ?

A

Allocation

B

Linking

C

Relocation

D

both (A) and (B)

Correct Answer: D

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44.

Advantage of using assembly language rather than machine language is that

A

introduction of data to program is easier

B

it is mneomonic and easy to read

C

addresses any symbolic not absolute

D

All of these

Correct Answer: D

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45.

Language which have many types, but the type of every name and expression must be calculated at compile time are

A

strongly-type languages

B

weakly typed languages

C

lossely typed languages

D

one of these

Correct Answer: A

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46.

Advantage of incorporating the macro-processor into pass 1 is that

A

functions are combined and it is not necessary to create intermediate files as output from the macro-processor and input to the assembler

B

more flexibility is available to programmer in that he may use all the features of the assembler in conjunction with macros

C

many functions have to be implemented twice

D

all of these

Correct Answer: D

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47.

Which of the following is a phase of a compilation process ?

A

Lexical analysis

B

Code generation

C

Both (a) and (b)

D

None of these

Correct Answer: C

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48.

A simple two-pass assembler does which of the following in the first pass?

A

it compute the total length of the program

B

it builds the symbol table for the symbols and their values.

C

it allocates space for the literals

D

All of these

Correct Answer: D

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49.

Compiler can diagnose

A

grammatical erros only

B

logical error only

C

grammatical as well as logical errors

D

None of these

Correct Answer: A

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50.

Assembler is a program that

A

places program into memory and prepare them for execution

B

automates the translation of assembly language into machine language

C

accept a program written in a high level language and produces an object program.

D

None of these

Correct Answer: B

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