350-701 · Question #506
Which metric is used by the monitoring agent to collect and output packet loss and jitter information?
The correct answer is D. RTP performance. RTP (Real-time Transport Protocol) performance is the metric used because RTP is specifically designed to carry real-time media streams (voice, video) and natively tracks the quality indicators that matter most for those streams - packet loss and jitter. Monitoring agents (such…
Question
Which metric is used by the monitoring agent to collect and output packet loss and jitter information?
Options
- AWSAv performance
- BAVC performance
- COTCP performance
- DRTP performance
How the community answered
(43 responses)- A5% (2)
- B2% (1)
- C5% (2)
- D88% (38)
Explanation
RTP (Real-time Transport Protocol) performance is the metric used because RTP is specifically designed to carry real-time media streams (voice, video) and natively tracks the quality indicators that matter most for those streams - packet loss and jitter. Monitoring agents (such as Cisco IP SLA) use RTP operations precisely because the protocol carries sequence numbers and timestamps that make calculating these metrics straightforward and accurate.
Why the distractors are wrong:
- A. WSAv performance relates to Wide-area Application Services optimization, not packet-level timing or loss measurement.
- B. AVC (Application Visibility and Control) performance focuses on identifying and classifying application traffic, not measuring jitter or packet loss.
- C. OTCP performance tracks TCP-based metrics (throughput, retransmits), which are relevant for bulk data but not for the real-time media quality indicators in question.
Memory tip: Think "Real-Time = RTP." Jitter and packet loss are real-time media problems, and RTP is the real-time protocol - they're permanently paired. If a question mentions jitter or packet loss in a monitoring context, RTP performance is your answer.
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