多項選擇題

At which layers of the OSI model do WANs operate?（）

A.application layer
B.session layer
C.transport layer
D.network layer
E.datalink layer
F.physical layer

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單項選擇題

A new subnet with 12 hosts has been added to the network. Which subnet address should this network use to provide enough useable addresses while wasting the fewest addresses（）。

A.192.168.10.80/28
B.192.168.10.80/29
C.192.168.10.96/28
D.192.168.10.96/29

多項選擇題

A network administrator wants to ensure that only the server can connect to port Fa0/1 on a Catalyst switch. The server is plugged into the switch Fa0/1 port and the network administrator is about to bring the server onlinE.What can the administrator do to ensure that only the MAC address of the server is allowed by switch port Fa0/1? （）

A.Configure port Fa0/1 to accept connections only from the static IP address of the server.
B.Employ a proprietary connector type on Fa0/1 that is incompatible with other host connectors.
C.Configure the MAC address of the server as a static entry associated with port Fa0/1.
D.Bind the IP address of the server to its MAC address on the switch to prevent other hosts from spoofing the server IP address.
E.Configure port security on Fa0/1 to reject traffic with a source MAC address other than that of the server.
F.Configure an access list on the switch to deny server traffic from entering any port other than Fa0/1.