Every host and muter on the Internet has an IP address,which encodes its(69).
A.
host number
B.
host number and socket
C.
network number
D.
host number and network number
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【单选题】听力原文:M: Do you know anything about Professor Jackson's class? W: If you are looking for an easy course, forget it. Q: What do we learn about Professor Jackson? (16)