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Welcome to the Stacks and Queues MCQs Page

Dive deep into the fascinating world of Stacks and Queues with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Stacks and Queues, a crucial aspect of Data Structures and Algorithms. In this section, you will encounter a diverse range of MCQs that cover various aspects of Stacks and Queues, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Data Structures and Algorithms.

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Check out the MCQs below to embark on an enriching journey through Stacks and Queues. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Data Structures and Algorithms.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Stacks and Queues. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Stacks and Queues MCQs | Page 13 of 25

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Q121.
Queues serve major role in

a.

Simulation of limited resource allocation

b.

Simulation of arbitrary linked list

c.

Simulation of recursion

d.

All of above

Discuss
Answer: (a).Simulation of limited resource allocation
Q122.
Which of the following data structure may give overflow error,even though the current number of element in it is less than its size?

a.

Simple queue

b.

Circular queue

c.

Priority Queues

d.

None of these

Discuss
Answer: (b).Circular queue
Q123.
Number of "ADD" and "REMOVE" operations required to access n/2th elements of a queue of "n" elements so that the original queue remain the same after the access is (take help of another queue.)

a.

2*n

b.

4*n

c.

8*n

d.

8*n-1

Discuss
Answer: (b).4*n
Q124.
The initial configuration of a queue is a, b, c, d, ('a' is in the front end). To get the configuration d, c, b, a, one needs a minimum of

a.

2 deletions and 3 additions

b.

3 deletion and 2 additions

c.

3 deletions and 3 additions

d.

3 deletions and 4 additions

Discuss
Answer: (c).3 deletions and 3 additions
Q125.
Queue can be used to implement

a.

recursion

b.

radix sort

c.

quick sort

d.

depth first search

Discuss
Answer: (b).radix sort
Q126.
The postfix form of the expression (A+B)∗(C∗D-E)∗F/G is

a.

AB+CDE∗ −∗F∗G/

b.

AB+CD ∗ E−∗F∗G/

c.

AB+CD ∗ E−F∗∗G/

d.

AB+CD ∗ E−FG/∗∗

Discuss
Answer: (d).AB+CD ∗ E−FG/∗∗
Q127.
What is the postfix form of the following prefix expression -A/B*C$DE

a.

A-BCDE$*/

b.

ABC$ED*/-

c.

ABCDE$*/-

d.

A-BCDE$*/-

Discuss
Answer: (c).ABCDE$*/-
Q128.
Which of the following types of expressions does not require precedence rule when evaluated?

a.

Prefix expression

b.

More than one of these

c.

Full parenthesized infix expression

d.

Partially parenthesized infix expression

Discuss
Answer: (b).More than one of these
Q129.
If memory for the run-time stack is only 150 cells(words), how big can N be in Factorial(N) before encounterring stack overflow?

a.

13

b.

26

c.

31

d.

45

Discuss
Answer: (b).26
Q130.
Using Pop(S1, Item) Push(S1,Item) Read(Item) Print(Item) the variables S1 represents (stack) and Item are given the input file: A,B,C,D,E,F Which stacks are possible:

a.

54    3      F2      D1      B

b.

5  4  3      D2      A1      F

c.

543     C2     E1     B

d.

5      A4      B3      C2      D1      E

Discuss
Answer: (a).54    3      F2      D1      B
Page 13 of 25

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