Which of the following is true about DFS?

Practice Questions

Q1
Which of the following is true about DFS?
  1. It can be implemented using recursion
  2. It always finds the shortest path
  3. It uses a queue
  4. It is not suitable for cyclic graphs

Questions & Step-by-Step Solutions

Which of the following is true about DFS?
  • Step 1: Understand what DFS stands for. DFS means Depth-First Search, which is a way to explore graphs or trees.
  • Step 2: Know that DFS starts at a root node and explores as far as possible along each branch before backtracking.
  • Step 3: Learn that DFS can be done using a method called recursion, which means the function calls itself to go deeper into the graph.
  • Step 4: Recognize that when DFS reaches a node with no children (called a leaf node), it stops going deeper and starts to backtrack.
  • Step 5: Conclude that the statement about DFS being implemented using recursion and exploring each branch until it reaches a leaf node is true.
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