Question 140
During a planned campus-network change at a public library in Portland, operators discover that two independent managed switches are wrongly described as a functioning single VSF stack. The design must preserve staff and visitor wireless access. Which post-change observation is the strongest acceptance evidence?
Explanation
Correct Answer
This observation tests the VSF member roles and stack consistency requirement at a public library in Portland. The expected result is that the stack presents one intended management domain, all members have healthy links, and a controlled member failure is recovered. The necessary correction is to build a supported VSF stack with compatible members, validated VSF links and documented conductor/standby roles; a saved configuration alone would not prove it is working. In this case, the observed fault is that two independent managed switches are wrongly described as a functioning single VSF stack.
Incorrect Answers
At a public library in Portland, this measures a different network requirement, First-hop gateway redundancy and failover. The case describes that two independent managed switches are wrongly described as a functioning single VSF stack, so accepting this result would leave the primary fault without direct verification.
At a public library in Portland, this would verify Multi-chassis LAGs and active paths, not the failure reported in this scenario. The requested closure criterion instead concerns VSF member roles and stack consistency: the stack presents one intended management domain, all members have healthy links, and a controlled member failure is recovered.
At a public library in Portland, the observation may be useful for a separate VSX inter-switch link and keepalive test, but it does not establish that two independent managed switches are wrongly described as a functioning single VSF stack has been resolved. The relevant check is the VSF member roles and stack consistency outcome.