Question

Which of the following applications is best suited for circuit switching rather than packet switching?

• A. Live voice or video calls
• B. File transfer
• C. Web browsing
• D. Email communication

Hint:

Circuit switching reserves a dedicated path with steady delay. Which application most needs constant, jitter-free timing?

Answer 1

The Correct Option is A

Step 1: Ask which application cares most about steady timing rather than bursty efficiency. That points to real-time traffic.

Step 2: A reserved end-to-end circuit guarantees constant bandwidth and near-constant delay, which keeps voice and video smooth without jitter.

Step 3: The other choices send data in irregular bursts and tolerate delay, so they gain nothing from a reserved circuit. The clear match for circuit switching is:

\[ \boxed{\text{Live voice or video calls}} \]