Question 520
A campus advertises overlapping VLAN subnet ranges across two sites, generating unpredictable routing to both. Which result would best establish that the correction succeeded?
Explanation
Correct Answer
This is an operational test of the required outcome rather than merely proof a setting exists. It checks that duplicate destination prefixes prevent unambiguous routed reachability between sites no longer prevents the service.
Incorrect Answers
This result may validate another network change, but it does not demonstrate recovery from the fault here: duplicate destination prefixes prevent unambiguous routed reachability between sites.
That explanation does not distinguish this option. “The adjacency reaches Established and only intended prefixes are exchanged” is an alternative action, but it does not by itself establish the outcome required in this case.
That explanation does not distinguish this option. “Internal routers no longer select the guest gateway for general default traffic” is an alternative action, but it does not by itself establish the outcome required in this case.