Question 50
A change advisory for Eastbrook Labs has two requirements: (1) run a long-distance optical link requiring low dispersion, and (2) determine which network a configured IPv4 host belongs to. Select TWO actions that together satisfy both outcomes.
Explanation
Correct Answers
Correct for outcome (1): Single-mode fiber carries one principal propagation mode and supports long distances with appropriate optics. The other outcome needs its separate action.
Correct for outcome (2): The IPv4 network address is the bitwise AND of the IP address and subnet mask. It complements the first required control.
Incorrect Answers
Not selected: Use a three-tier access/distribution/core architecture is for separate access, aggregation, and backbone roles in a large campus. Separate tiers scale policy aggregation and fast backbone transport independently. This is not one of the two required changes.
Not selected: Use the service set identifier or SSID is for identify the broadcast identifier clients select to join a WLAN. An SSID is the logical wireless network name advertised or provisioned to clients. This does not provide either of the two specified controls.
Not selected: Use scutil --dns on macOS is for inspect DNS resolver settings on a macOS client. scutil --dns reports the active macOS DNS resolver configuration. This is outside the two requested outcomes.