問題文
An engineer is documenting how an Ethernet frame is delivered on a modern switched network. Which statement about the Ethernet frame is correct?
選択肢
- The frame carries a destination and a source MAC address, and a trailing check value that lets the receiver detect corruption.
- The frame is addressed only to the next router.
- The frame carries the IP addresses of the two end hosts so that switches can forward it.
- The frame is repaired by the receiving station when the trailing check value does not match, which is why Ethernet is considered a reliable delivery service that guarantees every frame arrives intact.