VIP Exclusive
SIP Session Initiation Protocol VIP Certification Exam
SIP — This exam mirrors the SIP knowledge domains tested in industry certifications such as Cisco CCNP Collaboration (300-810 CLICA), Avaya ACSS, and CompTIA Network+ VoIP modules; no single standalone 'SIP Certification' body exists, so this is an original comprehensive practice set covering RFC 3261 and related SIP RFCs at professional depth.
31
Questions
90m
Time Limit
75.00%
To Pass
Question 1 of 31👑 VIP
A VoIP engineer is troubleshooting a one-way audio issue between two SIP endpoints. The SIP signaling completes successfully — INVITE, 200 OK, and ACK are all exchanged without error — but only one party can hear the other. The engineer captures RTP traffic and finds that audio flows correctly from endpoint A to endpoint B, but no RTP packets arrive at endpoint A from endpoint B. Which of the following is the MOST likely cause?
Questions 2–31 and full explanations are VIP-exclusive.