Question: Which of the following is a characteristic of a doubly linked list?

Options:

1. Each node has one pointer
2. Nodes can be traversed in both directions
3. It uses less memory than a singly linked list
4. It cannot be used to implement a stack

Correct Answer: Nodes can be traversed in both directions

Solution:

A doubly linked list allows traversal in both directions because each node contains two pointers, one to the next node and one to the previous node.