单项选择题
A. application B. presentation C. session D. transport E. network F. data link G. physical
You have set up an Internet based FTP server, where peo...
单项选择题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
Which of the following layers of the TCP/IP model most ...
单项选择题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
Which three of the protocols below belong to the applic...
多项选择题Which three of the protocols below belong to the application layer?（）
A.ARP B.HTTPS C.SMTP D.CDP E.TFTP F.ICMP
