AP は、98 フィート (30 m) の Cat 6 ケーブルを使用してアクセス スイッチに接続します。ケーブルは、三相モーター設備の近くのダクトを介して配線されます。三相がオンになっているときはいつでも、スイッチに接続されているすべてのユーザーがネットワーク上で長い待ち時間を経験します。問題の原因として最も可能性が高いのは次のうちどれですか?
正解:A
Explanation
Interference is a phenomenon that occurs when unwanted signals or noise affect the transmission or reception of data signals on a network. Interference can cause network issues such as high latency, low throughput, packet loss, or errors. Interference can be caused by various sources, such as electromagnetic fields, radio waves, power lines, or electrical devices. In this scenario, the three-phase motor installation is a source of interference that affects the Cat 6 cable that connects the AP to the access switch. The cable is wired through a duct close to the motor installation, which exposes it to the electromagnetic fields generated by the motor.
Anytime the motor is turned on, the interference causes high latency for all users connected to the switch.