300-445 Question 30
Single answerAn enterprise network team is tasked with monitoring the performance of a newly deployed Voice over IP (VoIP) solution. The team is evaluating whether to use active or passive monitoring. Based on the principles in RFC 7276 and RFC 7799, which of the following statements about active and passive monitoring is correct?
- A
Active monitoring involves injecting synthetic traffic into the network to measure performance metrics, such as latency and jitter.
- B
Passive monitoring introduces additional network traffic to measure performance, which may impact network bandwidth.
- C
Active monitoring relies on capturing and analyzing real user traffic to assess network performance.
- D
Passive monitoring is unsuitable for measuring user experience as it cannot measure metrics like delay or packet loss.
Show answer and explanation
Correct answer: A
Explanation
Active and passive monitoring are complementary techniques used for network assurance. Active monitoring injects synthetic traffic to probe the network for performance metrics, and is useful for proactive testing. Passive monitoring, on the other hand, analyzes real traffic to provide insights into network behavior without introducing additional load. Understanding the differences between these methods, as outlined in RFC 7276 and RFC 7799, is crucial for selecting the right approach for a given use case.
- A. Correct.
Correct. Active monitoring is defined as the injection of synthetic traffic into the network to measure metrics like latency, jitter, and packet loss. This is consistent with the definitions provided in RFC 7276 and RFC 7799.
- B. Incorrect.
Incorrect. Passive monitoring does not introduce additional traffic into the network; it relies on analyzing existing traffic, which makes it less intrusive.
- C. Incorrect.
Incorrect. This is a definition of passive monitoring, not active monitoring. Active monitoring involves synthetic traffic rather than real user traffic.
- D. Incorrect.
Incorrect. Passive monitoring is suitable for measuring user experience by analyzing real traffic. It can measure metrics like delay and packet loss by observing existing flows.