CompTIA Network+ (N10-007) — Question 527

A network technician is reviewing the company phone system to make the necessary changes to a firewall configuration. Which of the following protocols are used in VoIP communication? (Choose two.)

Answer options

• A. SIP
• B. NTP
• C. H.323
• D. SNMP
• E. IMAP
• F. SMB
• G. CSMA

Correct answer: A, C

Explanation

SIP (Session Initiation Protocol) and H.323 are both standard protocols used for initiating, maintaining, and terminating real-time sessions that include voice, video, and messaging applications over Internet Protocol (IP). The other options, such as NTP (Network Time Protocol), SNMP (Simple Network Management Protocol), IMAP (Internet Message Access Protocol), SMB (Server Message Block), and CSMA (Carrier Sense Multiple Access) do not pertain to VoIP communication.