單項選擇題Which OSI layer header contains the address of a destination host that is another network?()

A. application
B. presentation
C. session
D. transport
E. network
F. data link
G. physical


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3.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

4.多項選擇題Which three of the following OSI model layers also belong to the TCP/IP model?()

A. The application layer
B. The session layer
C. The data link layer
D. The transport layer
E. The network interface layer
F. The physical layer

5.單項選擇題Which one of the following is the most commonly used layer 2 network device?()

A. Hub
B. Bridge
C. Switch
D. Router
E. Repeaters
F. None of the above

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