A.access-group
B.access-list
C.acl
D.firewall packet-filter xxxx inbound/outbound

A.the IP address of Switch 1
B.the MAC address of Switch 1
C.the IP address of Host C
D.the MAC address of Host C
E.the IP address of the router's E0 interface
F.the MAC address of the router's E0 interface

A.对端的IP地址和对端的x.121地址
B.对端的IP地址和本接口的x.121地址
C.本接口的IP地址和对端的x.121地址
D.本接口的IP地址和本接口的x.121地址

A.Broadcast frames are never sent to swiches.
B.Broadcast addresses use an incorrect format for the switching table.
C.A broadcast address will never be the source address of a frame.
D.Broadcasts only use network layer addressing.
E.A broadcast frame is never forwarded by a switch.

A.show ip interface [interface] access-lists
B.show ip access-lists interface [interface]
C.show ip interface [interface]
D.show ip access-lists [interface]

A.分组层
B.数据链路层
C.物理层
D.传输层
E.网络层

A.buffering
B.cut-through
C.windowing
D.congestion avoidance
E.load balancing

A.IPCP
B.LCP
C.IPXCP
D.SNA

A.DLCI
B.BECN
C.LMI
D.FECN

A.display ip routing-table
B.display ospf lsa
C.display ospf database
D.display ospf interface