Data Structures MCQs

Circular Queue is a queue that reuses freed positions by wrapping indices.
This description distinguishes it from the other choices.

Circular Queue is commonly used for fixed-size buffering.
Its design supports this task efficiently or naturally.

Doubly Linked List fits because it supports efficient insertion or deletion when a node reference is available and each node stores two links.
Both clues point to this choice.

Circular Linked List is a linked list whose last node points back to the first node.
This description distinguishes it from the other choices.

Circular Linked List is commonly used for round-robin scheduling.
Its design supports this task efficiently or naturally.

The defining property is that traversal can continue cyclically without reaching a null link.
The other statements describe different structures or concepts.

Circular Linked List fits because it supports round-robin scheduling and traversal can continue cyclically without reaching a null link.
Both clues point to this choice.

Stack is a linear structure that follows Last In, First Out order.
This description distinguishes it from the other choices.

Stack is commonly used for function-call management and undo operations.
Its design supports this task efficiently or naturally.

The defining property is that each node stores two links.
The other statements describe different structures or concepts.

The defining property is that resizing may require allocating a larger block and copying elements.
The other statements describe different structures or concepts.

Dynamic Array fits because it supports maintaining an indexed sequence whose size changes and resizing may require allocating a larger block and copying elements.
Both clues point to this choice.