問題文
A collector receives messages from the access points of a site and the field that names the sender holds a bare address for some units and a full name with its domain for others. An engineer is asked what the standard wants a sender to place in that field. Which statement follows RFC 5424?
選択肢
- A fixed address belongs there first because a full name with its domain is not resolved by every collector that files the messages of a site.
- A single dash belongs there whenever the sender holds more than one address so that the collector reads the address of the sender from the network layer of the packet instead.
- Any of those values belongs there in any order because the field carries no meaning of its own for a collector that files the messages by the sender that the packet header names.
- The most specific value that the sender can obtain belongs there in the order of a full name with its domain then a fixed address then a bare name then a leased address with a single dash only when no value can be obtained.