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Difficulty: EasyNetwork Performance Monitoring and Metrics

A network technician needs to establish baseline performance monitoring and secure telemetry for a company's voice-over-IP (VoIP) infrastructure. Which of the following operational measures should the technician implement to effectively monitor audio quality and secure management traffic? (Select TWO).

  1. Track jitter and latency metrics to identify delay variations that degrade real-time audio quality.Answer
  2. Implement SNMPv3 using the authPriv security level to authenticate polling requests and encrypt payload data.Answer
  3. C
    Configure SNMPv2c community strings to provide packet-level payload encryption for metric data.
  4. D
    Require TCP for all voice streaming payloads to eliminate header overhead and minimize end-to-end delay.

Answer

The correct measures are tracking jitter and latency metrics to assess audio performance, and deploying SNMPv3 with the authPriv security level to encrypt monitoring traffic and authenticate polling requests.
Tracking jitter and latency measures real-time delivery performance required for VoIP call stability. Configuring SNMPv3 with the authPriv setting guarantees that device monitoring requests are securely authenticated and all telemetry payload data is encrypted over the network.

Step-by-Step Solution

1
Identify key performance metrics for real-time voice applications.
Jitter (packet delay variation) and latency are the primary metrics affecting VoIP call quality.
Voice traffic requires predictable delivery; excessive jitter causes dropped audio frames.
2
Select the secure network monitoring protocol configuration.
SNMPv3 configured with authPriv provides authentication and privacy (encryption).
SNMPv1 and SNMPv2c send data in plain text, whereas SNMPv3 authPriv encrypts management data.

Key Concept

VoIP Performance Metrics & SNMPv3 Security Levels
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Topics

Network Performance Monitoring and Metrics

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