1. _____ is used for grouping up of characters into token.
a. Lexical Analyzer
b. oolex
c. jflex
d. All of the mentioned
Ans- d. All of the mentioned
2. Which of the following characters are ignored while lexical analysis?
a. .
b. =
c. #
d. WhiteSpace
Ans- d. WhiteSpace
3. Which phase of compiler includes Lexical Analysis?
a. 1
b. 2
c. 3
d. Its primary function, not in any phase
Ans- a. 1
4. Lexers and parsers are not found in which of the following?
a. compiler front end processing
b. prettyprinters
c. linters
d. none of the mentioned
Ans- d. none of the mentioned
5. A program that performs lexical analysis is termed as:
a. scanner
b. lexer
c. tokenizer
d. All of the mentioned
Ans- d. All of the mentioned
6. Which among the following is not a tool to construct lexical analyzer from a regular expression?
a. lex
b. flex
c. jflex
d. None of the mentioned
Ans- d. None of the mentioned
7. The output of the lexical and syntax analyzer can stated as:
a. parse stream, parse tree
b. token tree, parse tree
c. token stream, parse tree
d. All of the mentioned
Ans- c. token stream, parse tree
8. The methodology to show an error when the analyzer faces a keyword over an user's input is based on:
a. rule priority
b. longest match rule
c. keyword-out rule
d. None of mentioned
Ans- a. rule priority
9. If the lexical analyser finds a lexeme with the same name as that of a reserved word,it ___
a. overwrites the word
b. overwrites the functionality
c. generates an error
d. something else
Ans- c. generates an error
10. Lexemes can be referred to as:
a. elements of lexicography
b. sequence of alphanumeric characters in a token
c. lexical errors
d. None of the mentioned
Ans- b. sequence of alphanumeric characters in a token