What is the most likely source of the echo?

exams 210-060 210-060 exam 0 Comments

User A notices echo on a call with user B. Both users are using Cisco VoIP phones. User B is using a headset, and user A is using a handset.

What is the most likely source of the echo?
A . user A handset
B . user B headset
C . disabled echo cancellation on user A phone profile
D . disabled echo cancellation on user B phone profile

Answer: B