問題文
An access point at a branch places the traffic of its clients on the wired side at the branch itself, and a metal policy has been assigned so that the upstream traffic of those clients is held under a ceiling. Where does the guide say the ceiling is actually enforced?
選択肢
- At the point at which the traffic finally leaves the controller, since the access point at the branch does not hold the upstream traffic under the ceiling and does not rewrite the marking of a packet either.
- At the switch port that feeds the access point, since the marking that a packet arrives with is the only thing the wired side is able to act on once the frame has left the radio.
- At the access point, since the upstream traffic never reaches the controller in this arrangement and the ceiling would have nowhere else at the branch to be applied before the packet is on the wired side.
- At the radio of the access point, since a metal policy is written against the classes of the air and the only place those classes exist is the moment before a frame is sent.