Question 780
A campus VLAN can reach its gateway but cannot access an internet SaaS site although neighboring VLANs can. Which ongoing operational safeguard best reduces the chance of recurrence?
Explanation
Correct Answer
This is a continuing control for the failure mode in which local gateway success does not verify downstream routed, policy or name-resolution service. It complements the immediate fix instead of relying on a one-off correction.
Incorrect Answers
That control is useful for a different failure, such as when a single client cannot reach a printer even though other clients in the same VLAN succeed. It would leave the present failure mode insufficiently addressed.
That control is useful for a different failure, such as when a campus deployment has repeated outages after hurried template changes, and the NOC has no versioned baseline for comparison. It would leave the present failure mode insufficiently addressed.
That control is useful for a different failure, such as when a network administrator assumes a wireless slowdown is an ISP fault, but wired clients on the same WAN are fast. It would leave the present failure mode insufficiently addressed.