A.8
B.12
C.20
D.24

A.SW1#show swithport port-security interface FastEthernet 0/12
B.SW1#show swithport port-secure interface FastEthernet 0/12
C.SW1#show port-secure interface FastEthernet 0/12
D.SW1#show running-config

A.dialer
B.語(yǔ)音接口
C.serial口
D.子接口
E.CE1/PRI接口
F.虛擬接口模板
G.ISDNBRI接口
H.備份中心邏輯通道

A.Switches are primarily software based while bridges are hardware based.
B.Both bridges and switches forward Layer 2 broadcasts.
C.Bridges are frequently faster than switches.
D.Switches have a higher number of ports than most bridges.
E.Bridges define broadcast domains while switches define collision domains.
F.Both bridges and switches make forwarding decisions based on Layer 2 addresses.

A.255.255.255.0
B.255.255.255.240
C.255.255.255.248
D.255.255.255.252
E.255.255.255.254

A.A類
B.主機(jī)地址
C.網(wǎng)絡(luò)地址
D.解析地址

A.The port is experiencing errors
B.The port is administratively disabled
C.The port is blocked by spanning tree
D.The port has an active link with normal traffic activity

A.X.25
B.幀中繼
C.dialer
D.同/異步串口

A.Filtering can occur based on Layer 3 information.
B.Broadcasts are eliminated.
C.Routers generally cost less than switches.
D.Broadcasts are not forwarded across the router.
E.Adding a router to the network decreases latency.