N10-005 Question #318: Real Exam Question with Answer & Explanation

The correct answer is A: Incorrect VLAN. When a user physically moves to a new office, their computer connects to a different switch port. If that port is assigned to the wrong VLAN, the DHCP server may assign an IP address from the wrong subnet's scope. Local resources may still be partially reachable (explaining acces

Question

A user moves from one office to another. When the user logs onto their computer, it has local access to shared drives but no Internet access. A technician determines that the computer has an IP address in the wrong subnet. Which of the following is MOST likely the cause?

Options

AIncorrect VLAN
BMTU mismatch
CHijacked HOSTS file
DMissing routes

Explanation

When a user physically moves to a new office, their computer connects to a different switch port. If that port is assigned to the wrong VLAN, the DHCP server may assign an IP address from the wrong subnet's scope. Local resources may still be partially reachable (explaining access to shared drives on the same VLAN), but the default gateway for Internet access belongs to a different subnet, causing Internet to fail. An MTU mismatch (choice B) causes fragmentation issues, not a wrong IP subnet. A hijacked HOSTS file (choice C) would redirect DNS lookups, not cause a subnet mismatch. Missing routes (choice D) could block Internet traffic but would not explain receiving an IP from the wrong subnet.

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