Which three tools are used for ongoing monitoring and maintenance of a voice and video environment? (Choose three.)

Flow-based analysis tools such as NetFlow or NBAR measure the bandwidth mix of applications and their flows, providing visibility into which traffic types consume capacity in a converged network.

Network convergence-related failures are detected through routing protocol monitoring tools, not call management analysis, which focuses on call admission and media quality metrics.

Call management analysis tools identify Call Admission Control failures and call quality degradation, which are the primary operational failure modes specific to voice and video environments.

Active monitoring via synthetic probes (such as Cisco IP SLA) generates controlled test traffic to continuously measure loss, latency, and jitter on network paths, enabling proactive detection before real calls are impacted.

Passive monitoring observes existing production traffic rather than injecting test traffic, so it cannot measure loss, latency, and jitter proactively when no real call traffic is present - synthetic probes are inherently active by design.

PTP (Precision Time Protocol) time-stamping is a clock synchronization mechanism used to maintain timing accuracy in frequency-sensitive networks, not a flow analysis technique for measuring application-level loss, latency, and jitter.