フリー問題

問題文

An engineer reads how a speaker of the routing protocol handles the sub-parts of a tunnel attribute that lie beyond its understanding. Which statement is correct?

選択肢

1. The sub-part that may sit in a tunnel part more than once, each occurrence of it carrying its own meaning, is the Encapsulation sub-part, the sub-part whose malformed state costs the whole tunnel part its place in the attribute is the tunnel egress endpoint sub-part, and a sub-part that carries a meaning foreign to the tunnel type is removed by the speaker.
2. The sub-part that may sit in a tunnel part more than once, each occurrence of it carrying its own meaning, is the Color sub-part, the sub-part whose malformed state costs the whole tunnel part its place in the attribute is the tunnel egress endpoint sub-part, and a sub-part that carries a meaning foreign to the tunnel type is disregarded by the speaker.
3. The sub-part that may sit in a tunnel part more than once, each occurrence of it carrying its own meaning, is the Encapsulation sub-part, the sub-part whose malformed state costs the whole tunnel part its place in the attribute is the tunnel ingress endpoint sub-part, and a sub-part that carries a meaning foreign to the tunnel type is disregarded by the speaker.
4. The sub-part that may sit in a tunnel part more than once, each occurrence of it carrying its own meaning, is the Color sub-part, the sub-part whose malformed state costs the whole tunnel part its place in the attribute is the tunnel ingress endpoint sub-part, and a sub-part that carries a meaning foreign to the tunnel type is removed by the speaker.