300-445 Question 25
Single answerYou are tasked with designing a network assurance system for a global enterprise that requires real-time quality monitoring for VoIP traffic while minimizing resource usage. Which approach or combination of approaches aligns best with the requirements, according to RFC 7276 and RFC 7799?
- A
Active monitoring using synthetic traffic to measure VoIP quality metrics such as jitter and packet loss.
- B
Passive monitoring by analyzing actual VoIP traffic to extract quality metrics in real time.
- C
Combining active monitoring for proactive diagnostics with passive monitoring for real-time analysis of live traffic.
- D
Passive monitoring only, as active monitoring inherently disrupts VoIP traffic and is unsuitable for real-time scenarios.
Show answer and explanation
Correct answer: C
Explanation
The combination of active and passive monitoring is the most effective approach in this scenario. Active monitoring provides proactive diagnostics by generating synthetic traffic to simulate conditions, while passive monitoring ensures real-time analysis of actual VoIP traffic. This hybrid approach aligns with the requirements of maintaining VoIP quality assurance with minimal resource impact, as outlined in RFC 7276 and RFC 7799.
- A. Incorrect.
Active monitoring using synthetic traffic is useful for diagnostics and proactive assessments, but it does not provide real-time analysis of live VoIP traffic and introduces additional network overhead.
- B. Incorrect.
Passive monitoring analyzes actual traffic and is suitable for real-time metrics extraction but may lack the ability to proactively detect potential issues before they impact live traffic.
- C. Correct.
Combining active monitoring and passive monitoring addresses both proactive diagnostics and real-time analysis, aligning best with the requirements for VoIP quality assurance in this scenario.
- D. Incorrect.
While passive monitoring avoids additional traffic generation, it cannot proactively identify issues or provide diagnostics for potential future problems, making it insufficient on its own for this scenario.