Compiler Design Set 3
Free Online Best Compiler Design MCQ Questions for improve your basic knowledge of Compiler Design. This Compiler Design set 3test that contains 25 Multiple Choice Questions with 4 options. You have to select the right answer to a question.
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Question 1 |
Empty set is a ___________
A | Invalid set |
B | Infinite set |
C | Finite set |
D | None of Above |
Question 2 |
From where it takes its input from?
A | Lexical analyser |
B | Syntactic Analyser |
C | Semantic Analyser |
D | None of Above |
Question 3 |
Maximum number of states of a DFA converted from an NFA with nstates is?
A | N |
B | 2n |
C | N2 |
D | 2n |
Question 4 |
A finite automata recognizes ____________
A | Any Language |
B | Context Sensitive Language |
C | Context Free Language |
D | Regular Language |
Question 5 |
What is the transitional function of an NFA?
A | Q X ??Q |
B | Q X ??2Q |
C | Q X ??2n |
D | Q X ??Qn |
Question 6 |
A language L from a grammar G = { VN, ?, P, S} is?
A | Set of symbols over VN |
B | Set of symbols over ? |
C | Set of symbols over P |
D | Set of symbols over S |
Question 7 |
Which is the application of NFA?
A | A regular language is produced by union of two regular languages |
B | The concatenation of two regular languages is regular |
C | The Kleene closure of a regular language is regular |
D | All of the Above |
Question 8 |
The string WWR is not recognized by any FSM because _________
A | An FSM cannot remember arbitrarily large amount of information |
B | An FSM cannot match W with WR |
C | An FSM cannot fix the midpoint |
D | An FSM cannot remember first and last inputs |
Question 9 |
In (a,b) what is b?
A | Domain |
B | Range |
C | Domain & Range |
D | None of Above |
Question 10 |
The RE in which any number of 0?s is followed by any number of 1?s followed by any number of 2?s is?
A | (0+1+2)* |
B | 0*1*2* |
C | 0* + 1 + 2 |
D | (0+1)*2* |
Question 11 |
If A ? B = B, then?
A | A ? B |
B | A = ø |
C | B ? A |
D | B = ø |
Question 12 |
In (a,b) what is a?
A | Domain |
B | Range |
C | Domain & Range |
D | None of Above |
Question 13 |
If a set A has n elements, then the total number of subsets of A is?
A | N |
B | 2n |
C | N2 |
D | 2n |
Question 14 |
Conversion of a DFA to an NFA __________
A | Is impossible |
B | Requires the subset construction |
C | Is Chancy |
D | Is nondeterministic |
Question 15 |
The regular expression denotes a language comprising all possible strings of even length over the alphabet (0, 1).
A | 1 + 0(1+0)* |
B | (0+1) (1+0)* |
C | (1+0) |
D | (00+0111+10)* |
Question 16 |
Syntax Analyser is also known as ___________
A | Hierarchical Analysis |
B | Hierarchical Parsing |
C | None of the mentioned |
D | Hierarchical Analysis & Parsing |
Question 17 |
A = {x: x ? x} represents?
A | {0] |
B | {1} |
C | {} |
D | {x} |
Question 18 |
If A, B and C are any three sets, then A – (B ? C) is equal to _________
A | (A – B) ? (A – C) |
B | (A – B) ? C |
C | (A – B) ? (A – C) |
D | (A – B) ? C |
Question 19 |
If R is regular language and Q is any language (regular/ non regular), then Pref (Q in R) is _____________
A | Non-regular |
B | Equal |
C | Infinite |
D | Regular |
Question 20 |
The smallest set A such that A ? {1, 2} = {1, 2, 3, 5, 9} is?
A | {2,3,5} |
B | {1, 2, 5, 9} |
C | {3, 5, 9} |
D | None of Above |
Question 21 |
The subset construction shows that every NFA accepts a __________
A | String |
B | Function |
C | Regular language |
D | Context-free language |
Question 22 |
Consider the production of the grammar S->AA A->aa A->bb Describe the language specified by the production grammar.
A | L = {aaaa,aabb,bbaa,bbbb} |
B | L = {abab,abaa,aaab,baaa} |
C | L = {aaab,baba,bbaa,bbbb} |
D | L = {aaaa,abab,bbaa,aaab} |
Question 23 |
The RE gives none or many instances of an x or y is?
A | (x+y) |
B | (x+y)* |
C | (x* + y) |
D | (xy)* |
Question 24 |
An NFA may be converted to a DFA using __________
A | Induction |
B | A construction |
C | Contradiction |
D | Compilation |
Question 25 |
What is the transitional function of a DFA?
A | Q X ??Q |
B | Q X ??2Q |
C | Q X ??2n |
D | Q X ??Qn |
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