hardMultiple Choice
300-410 Practice Question: Runs the following command to troubleshoot SNMP…
A network engineer runs the following command to troubleshoot SNMP statistics:
R1# show snmp statistics
0 SNMP packets input 0 Bad SNMP version errors 0 Unknown community name 0 Illegal operation for community name supplied 0 Encoding errors 0 Number of requested variables 0 Number of altered variables 0 Get-request PDUs 0 Get-next PDUs 0 Set-request PDUs 0 Input queue drops 0 SNMP packets output 0 Too big errors 0 No such name errors 0 Bad values errors 0 General errors 0 Get-response PDUs 0 SNMP trap PDUs
What does this output indicate?
⚠ Common exam trap
Cisco often tests the misconception that zero error counters mean SNMP is working fine, when in fact zero counters for all input/output packets indicate no SNMP communication at all, not a healthy state.
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
✓
No SNMP traffic has been processed, which may indicate a configuration or connectivity issue.
The output shows all counters at zero, including SNMP packets input and output, which means the router has not processed any SNMP traffic. This typically indicates that SNMP is either not configured, the community strings are mismatched, or there is a network connectivity issue preventing SNMP messages from reaching the router. A correctly functioning SNMP agent would show non-zero counters for received requests or sent responses.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
No SNMP traffic has been processed, which may indicate a configuration or connectivity issue.
Why this is correct
Every counter reads zero, including input, output, PDUs and traps, so the router has processed no SNMP traffic at all. This points to a configuration or connectivity fault rather than malformed requests, since even errors would otherwise increment.
- ✗
SNMP is working correctly with many successful requests.
Why it's wrong here
Every counter is zero, including input and output packet totals, so no SNMP traffic has reached or left the router; the agent is not functioning or not being polled. It is tempting because zero error counters can suggest a clean, healthy state, and that reading would hold if the packet counters themselves were non-zero.
- ✗
The router is sending many SNMP traps.
Why it's wrong here
The 'SNMP trap PDUs' counter reads zero, so the router has sent no traps at all. It is tempting because a high trap count would indicate notification flooding, which is the correct finding when that output counter is non-zero.
- ✗
There are errors due to bad community names.
Why it's wrong here
The output shows zero for every counter, including 'Unknown community name', so no community-name errors have occurred. It is tempting because that counter would confirm a community mismatch, which is the correct diagnosis when the field shows a non-zero value.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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