300-445 Question 182
Select 4An enterprise network team has been receiving complaints from users about poor application performance during video conferencing. Using their network monitoring tools, the team notices packet drops on a specific link, high latency, and varying delay. Which steps should the team take to diagnose and resolve this issue?
- A
Analyze the interface utilization on the affected link to identify congestion or bandwidth saturation.
- B
Conduct traceroute tests to detect potential routing issues or misconfigurations.
- C
Verify QoS (Quality of Service) policies to ensure video traffic is prioritized correctly.
- D
Reboot all network devices in the path to resolve the issue immediately.
- E
Check for hardware errors like CRC (Cyclic Redundancy Check) errors or interface drops on the affected devices.
Show answer and explanation
Correct answers: A, B, C, E
Explanation
To diagnose and resolve network issues like packet loss, congestion, and jitter, a structured approach is essential. Analyzing interface utilization, conducting traceroute tests, verifying QoS policies, and checking for hardware errors provide valuable insights into potential causes. These steps help in pinpointing the root cause and implementing effective remediation. Rebooting all devices, while sometimes useful in rare cases, is not a recommended first step as it lacks precision and may cause additional problems.
- A. Correct.
Analyzing interface utilization can help detect if congestion or bandwidth saturation is causing packet loss and jitter.
- B. Correct.
Traceroute tests can identify routing issues, such as loops or misconfigured paths, that might contribute to high latency and variable delay.
- C. Correct.
Verifying QoS policies ensures that video conferencing traffic is appropriately prioritized to minimize jitter and packet loss.
- D. Incorrect.
Rebooting all network devices is not a targeted troubleshooting step and may disrupt network operations unnecessarily.
- E. Correct.
Checking hardware errors can reveal physical issues, such as faulty cables or interfaces, that could cause packet loss and degraded performance.