Question 450
A Cisco IOS router serves DHCP for 10.89.0.0/24. Clients obtain leases, but the server sometimes assigns 10.89.0.1, which is the statically configured default-gateway SVI address. Which change prevents this collision?
Explanation
Correct Answer
An excluded-address range prevents the IOS DHCP service from leasing infrastructure IPs while retaining the pool for clients.
Incorrect Answers
Relay is unnecessary for the local DHCP server and does not exclude a reserved address.
An incorrect gateway option would break clients and still fail to reserve the actual address.
Lease duration cannot prevent DHCP from selecting an infrastructure IP that remains in its allocatable set.