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Subject Revision Quiz-4

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Question 1

Given √224r = 13r the value of radix r is

Question 2

Let m=(313)4 and n=(322)4. Find the base 4 expansion of m+n.

Question 3

Which of the following is a weighted code?

Question 4

Perform multiplication of the binary numbers: 01001 × 01011 = ?

Question 5

 The minimum number of flip-flops that can be used to construct a modulus-5 counter is __________

Question 6

Which of the following flip-flops is used to avoid the race around the problem?

Question 7

How many select lines are required for a 1-to-8 demultiplexer?

Question 8

In realization of 64 : 1 MUX using 2 : 1 MUX, the required number of 2 : 1 MUX is:

Question 9

The prime implicant which has at least one element that is not present in any other implicant is known as ___________

Question 10

If f(XYZ)= then prime implicants and essential prime implicants are respectively?

Question 11

The optimization phase in a compiler generally:

Question 12

Which of the following is not a machine-independent code optimization technique?

Question 13

Which of the following grammar is Left recursive?

Question 14

What is postfix notation also known as:

Question 15

A three-address code has _________ address locations to calculate the expression.

Question 16

The method which merges the bodies of two loops is

Question 17

Consider the following grammar :

E  TE'

E'   / +TE'

T  FT'

T'   / *FT'

F  id / (E)

Find the number of common symbols in Follow(F) , Follow(T) and Follow(T') ___________.

Question 18

GOTO(A→α·Xβ,X) is:

Question 19

Consider the following strings.
I. for1_2
II. _if
IV. 123
Find invalid tokens from the above strings in C program.

Question 20

Which of the following is not a token in C language.
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