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Dear candidates you will find MCQ questions of Data Structure (DS) here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 51.17K Points
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Q. 221) Which of the following way follows in Post order traversal?

(A) Root -> Left sub tree -> Right sub tree.

(B) Root -> Right sub tree -> Left sub tree.

(C) Left sub tree -> Root -> Right sub tree.

(D) Left sub tree -> Right sub tree -> Root.

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Mr. Dubey • 51.17K Points
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Q. 222) A _________is a linked list which always contains a special node called the header node, at the beginning of the list.

(A) Doubly Linked List.

(B) Circular List.

(C) Header Linked List.

(D) None.

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Mr. Dubey • 51.17K Points
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Q. 223) _______________is a header list where the last node points back to the header node.

(A) Doubly header List.

(B) Singly header List.

(C) Grounder Header List.

(D) Circular Header List.

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Mr. Dubey • 51.17K Points
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Q. 224) The advantage of a two-way list and a circular header list is combined into a ________.

(A) two-way circular header list.

(B) two-way circular list.

(C) two-way header circular list.

(D) None.

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Mr. Dubey • 51.17K Points
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Q. 225) The pointer of the last node contains a special value called_____________.

(A) null pointer.

(B) index pointer.

(C) pointer link.

(D) address pointer.

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Mr. Dubey • 51.17K Points
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Q. 226) The OS of a computer may periodically collect all the deleted space onto the free storage list. This technique is called______________.

(A) buffering.

(B) garbage collection.

(C) deal location.

(D) buffer collection.

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Mr. Dubey • 51.17K Points
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Q. 227) Important part of any compiler is the construction and maintenances of a dictionary, this types of dictionary are called______________.

(A) symbol table.

(B) index table.

(C) grammar table.

(D) pointer table.

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Mr. Dubey • 51.17K Points
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Q. 228) The data structure required to check whether an expression contains balanced parenthesis is?

(A) queue

(B) stack

(C) linked list

(D) file

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Mr. Dubey • 51.17K Points
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Q. 229) What are the advantages of arrays?

(A) Easier to store elements of same data type

(B) Used to implement other data structures like stack and queue

(C) Convenient way to represent matrices as a 2D array

(D) All of the mentioned

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Mr. Dubey • 51.17K Points
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Q. 230) The number of possible ordered trees with three nodes A,B,C is?

(A) 16

(B) 12.

(C) 10

(D) 6

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