Compiler Design

Which tool is used for grouping of characters in tokens in the compiler?

• 1. a.Parser

• 1. b. Code optimizer

• 1. c.Code generator

• 1. d.Scanner

What is the linker?

• 1. a.It is always used before the program execution.

• 1. b.It is required to create the load module.

• 1. c.It is the same as the loader

• 1. d.None of the above

Parsing is categorized into how many types?

• a.3

• b.4

• c.2

• d.5

Which derivation is generated by the top-down parser?

• 1. a.Right-most derivation in reverse

• 1. b.Left-most derivation in reverse

• 1. c.Right-most derivation

• 1. d.Left-most derivation

Which parser is most powerful in the following parsers?

• 1. a.Operator Precedence

• 1. b.SLR

• 1. c.Canonical LR

• 1. d.LALR

The output of the lexical analyzer is _______

• 1. a.string character

• 1. b.a syntax tree

• 1. c.a set of RE

• 1. d.a set of tokens

Which grammar gives multiple parse trees for the same string?

• 1. a.Unambiguous

• 1. b.Regular

• 1. c.Ambiguous

• 1. d.All of the above

In Compiler lexical analyzer is used for?

• 1. a.removing comments

• 1. b.removing whitespace

• 1. c.breaking the syntaxes in the set of tokens

• 1. d.All of the mentioned

Which of the following component is important for semantic analysis?

• 1. a.Yacc

• 1. b.Lex

• 1. c.Symbol Table

• 1. d.Type Checking

Keywords are recognized in a compiler during -

• 1. a.the code generation

• 1. b.the data flow analysis

• 1. c.the lexical analysis of the program

• 1. d.the program parsing