Which of the following ports is commonly used by VoIP phones?
A.
20
B.
143
C.
445
D.
5060
The Answer Is:
D
This question includes an explanation.
Explanation:
TCP/UDP port 5060 is commonly used by VoIP phones. It is the default port for SIP (Session Initiation Protocol), which is a signaling protocol that establishes, modifies, and terminates multimedia sessions over IP networks. SIP is widely used for VoIP applications such as voice and video calls. References: https://www.voip-info.org/session-initiation-protocol/
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