Which of the following protocols is used by voice over IP (VoIP) applications?

The correct answer is A. UDP. VoIP (Voice over IP) applications use UDP (User Datagram Protocol) because real-time voice communication requires low latency and can tolerate minor packet loss. UDP has no connection setup overhead and does not retransmit lost packets, making it ideal for time-sensitive audio…

Network Traffic Analysis & Protocol Review

Question

Options

AUDP
BTCP
CICMP
DIPv6

How the community answered

(34 responses)

A
74% (25)
B
3% (1)
C
15% (5)
D
9% (3)

Explanation

VoIP (Voice over IP) applications use UDP (User Datagram Protocol) because real-time voice communication requires low latency and can tolerate minor packet loss. UDP has no connection setup overhead and does not retransmit lost packets, making it ideal for time-sensitive audio streams. TCP (B) is unsuitable for VoIP because its guaranteed delivery and retransmission mechanism introduce delays that disrupt voice quality. ICMP (C) is a diagnostic protocol used for error reporting and utilities like ping, not data transport. IPv6 (D) is a network-layer addressing protocol, not a transport protocol - it can carry VoIP traffic but is not itself the protocol VoIP uses.

Topics

#VoIP#UDP#transport protocol#real-time communication

Community Discussion

No community discussion yet for this question.

Full GCIA Practice