Question

Which algorithm controls congestion?

• A. Dijkstra
• B. Tunnelling
• C. Leaky Bucket
• D. Sliding Window

Hint:

Leaky Bucket and Token Bucket are the two most important traffic shaping and congestion control algorithms.

Answer 1

The Correct Option is C

Concept: Congestion occurs when the traffic entering a network exceeds its handling capacity. Congestion control algorithms regulate packet transmission rates.

Step 1: Understand Leaky Bucket Algorithm.
The Leaky Bucket algorithm controls the rate at which packets enter the network. Packets are stored in a bucket-like buffer. Data leaves the bucket at a constant rate.

Step 2: Effect of the algorithm.
The algorithm smooths bursty traffic and prevents network overload. Thus it helps control congestion.

Step 3: Analyze other options.
Dijkstra is a shortest path algorithm. Tunnelling is a packet encapsulation technique. Sliding Window mainly provides flow control.

Step 4: Choose the answer.
\[ \boxed{\text{Leaky Bucket}} \] is the congestion control algorithm.