Question 380
A change advisory for Pinecrest Schools has two requirements: (1) explain why a legacy repeater shared across several hosts has collisions, and (2) select a medium immune to electromagnetic interference in an industrial plant. Select TWO actions that together satisfy both outcomes.
Explanation
Correct Answers
Correct for outcome (1): A repeater repeats bits across hosts, so overlapping transmissions contend for the same medium. The other outcome needs its separate action.
Correct for outcome (2): Optical signaling is not affected by electrical EMI in the way copper signaling can be. It complements the first required control.
Incorrect Answers
Not selected: Use a suitable /30 traditional point-to-point subnet is for allocate a point-to-point routed IPv4 link using two usable host addresses. A /30 contains four total addresses and two ordinarily usable interface addresses. This does not provide either of the two specified controls.
Not selected: Split the /24 into eight blocks of 32 addresses is for create equal /27 subnets from a /24. Borrowing three host bits creates eight /27 subnets, each normally offering 30 usable hosts. This is not one of the two required changes.
Not selected: Add or update the source MAC and VLAN entry on the receiving interface is for learn which switch port owns a newly seen source MAC. A learning switch updates its CAM table from the incoming frame's source address. This is outside the two requested outcomes.