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單項選擇題

You have set up an Internet based FTP server, where people can upload and download files. In terms of the OSI model, what is the highest layer used during the FTP sessions.（）

A.Application
B.Presentation
C.Session
D.Transport
E.Internet
F.DataLink
G.Physical

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單項選擇題

Which of the following layers of the TCP/IP model most closely corresponds to the network layer of the OSI model?（）

A.Application
B.Internet
C.Transport
D.Network
E.Data Link

多項選擇題

Which three of the protocols below belong to the application layer?（）

A.ARP
B.HTTPS
C.SMTP
D.CDP
E.TFTP
F.ICMP