350-601 Network Practice Question
An engineer is troubleshooting high CPU utilization on a Nexus 7700 switch. The output of 'show process cpu' shows high usage from the 'netstack' process. Which action should the engineer take to identify the cause?
⚠ Common exam trap
Cisco often tests the distinction between generic interface troubleshooting and process-specific internal diagnostics, leading candidates to choose a broad command like 'show interface' instead of the targeted internal command for the identified process.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use 'show system internal netstack stats'.
The 'netstack' process handles network stack operations, including packet processing and forwarding. The 'show system internal netstack stats' command provides detailed internal statistics about the netstack process, such as packet drops, buffer usage, and error counters, which help pinpoint the root cause of high CPU utilization.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable 'feature netstack' to get more details.
Why it's wrong here
No such feature exists.
- ✗
Reboot the switch to clear the process.
Why it's wrong here
Rebooting is not a troubleshooting step and may cause downtime.
- ✗
Check for broadcast storms using 'show interface'.
Why it's wrong here
Broadcast storms can cause CPU issues but netstack may be from other causes.
- ✓
Use 'show system internal netstack stats'.
Why this is correct
This command shows internal netstack counters and helps isolate the issue.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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