CS402 Midterm Online Quiz

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CS402-Midterm

1 / 50

Languages generated by kleene star are always ______________.

2 / 50

If S = {ab, bb}, then S* will not contain

3 / 50

One FA has 3 states and 2 letters in the alphabet. Then FA will have ___________ number of transitions in the diagram

4 / 50

“One language can be expressed by more than one NFA”. This statement is ______________.

5 / 50

In TG there may exist no paths for certain string.

6 / 50

GTG can have _______________ final state.

7 / 50

If an alphabet has n number of letter, then number of strings of length m will be

8 / 50

FA1 and FA2 are two FA’s representing two languages. Then FA3, which is sum of FA1 and FA2, will accept the strings which are

9 / 50

Every FA should be __________

10 / 50

FA1 corresponds to r*, then FA1 must accept _______________ string.

11 / 50

In GTG’s there may exist no path for a certain string.

12 / 50

If a language has RE, then that language can be expressed through TG.

13 / 50

“Every Infinite language is regular” this statement is

14 / 50

PALINDROME can be defined by more than one regular language

15 / 50

If r1 = (aa + bb) and r2 = ( a + b) then the language (aa + bb)* will be generated by

16 / 50

In FA, if one enters in a specific state but there is no way to leave it, then that specific state is called

17 / 50

RE for the language defined over Σ={a,b} having words starting with a is____

18 / 50

In TG there may exist no paths for certain string.

19 / 50

S= {a,bc,cc} has the latters

20 / 50

a(a+b)*a+b(a+b)*b is RE for the language defined over S={a,b} having words beginning and ending with same letters

21 / 50

If an alphabet has n number of letter, then number of strings of length m will be

22 / 50

One FA has n states and m letters in the alphabet. Then FA will have _____ number of transitions in the diagram.

23 / 50

According to 3rd part of the Kleene’s theorem, If a language can be accepted by an RE then it can be accepted by a _________ as well

24 / 50

Length of strings, generated by infinite language is_______

25 / 50

In TG, there may be a transition for null string.

26 / 50

Let S = {aa, bb} be a set of strings then s* will have

27 / 50

Languages generated by kleene star are always ______________.

28 / 50

TG can more then one initial state

29 / 50

Alphabet S = {a,bc,cc} has _______ number of letters.

30 / 50

One language can be represented by more than one RE” this statement is____

31 / 50

In FA final state represent by _________sign

32 / 50

(a + b)*b is RE for the language defined over S={a,b} having words not ending in a

33 / 50

One language can be represented by more than one RE” this statement is____

34 / 50

a (a + b)* is the RE of language defined over S = {a, b} having at least one a

35 / 50

If S = {aa, bb}, then S* will not contain..

36 / 50

TG can have more than one initial state.

37 / 50

If L1 and L2 are expressed by regular expressions r1 and r2, respectively then the language expressed by r1 + r2 will be _________

38 / 50

Which statement is true?

39 / 50

GTG can have _______________ final state.

40 / 50

One language can represents more than one RE.

41 / 50

Which of the following is not a word of language EQUAL?

42 / 50

The length of output string in case of _________ is one more than the length of corresponding input string.

43 / 50

The _______ machine helps in building a machine that can perform the addition of binary numbers.

44 / 50

One FA has n states and m letters in the alphabet. Then FA will have _____ number of transitions in the diagram.

45 / 50

In which of the following language Rev(s)=s

46 / 50

In FA final state represent by _________sign

47 / 50

The clouser FA*(star on an FA ) always accept ______string

48 / 50

TG is always deterministic.

49 / 50

One language can be represented by more than one RE” this statement is____

50 / 50

If r1 and r2 are regular expressions then which of the following is not regular expression.

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