Question 90
A network upgrade at Lighthouse Medical has two requirements: (1) reduce co-channel contention among nearby access points, and (2) separate access, aggregation, and backbone roles in a large campus. Which proposed plan satisfies both outcomes?
Explanation
Correct Answer
Both outcomes are covered: (1) Adjacent APs on the same channel compete for airtime even when their signals do not overlap at layer 2. (2) Separate tiers scale policy aggregation and fast backbone transport independently. Neither action is a substitute for the other.
Incorrect Answers
Neither step is the requested pair: Identify the address with all host bits set to one is for distinguish a directed broadcast from an ordinary host IP, and Use a WAN transport design with appropriate edge routers is for connect branch locations across a provider-operated geographic network. The all-ones host portion represents the subnet-directed broadcast in ordinary IPv4 subnets. The proposed plan misses the two stated outcomes.
The first step covers (1), but the second addresses size an IPv4 subnet for at least 50 ordinary host addresses. Six host bits yield 64 total addresses, generally 62 usable after network and broadcast. It leaves outcome (2) unfulfilled.
The second step covers (2), but the first addresses deliver a frame with a known unicast destination in the same VLAN. Known unicast switching uses the CAM destination lookup to avoid unnecessary flooding. It leaves outcome (1) unfulfilled.