A.配置了Cisco IOS IPS软件的路由器
B.专门的Cisco网络防火墙
C.专门设计用来提供专有IDS或IPS服务的设备
D.安装在相应的安全设备、交换机或路由器上的网络模块

A.AH
B.MD5
C.PSK
D.ESP

A.network 172.26.168.0 area 478
B.network 172.26.0.0
C.network 172.26.168.128 0.0.0.127
D.network 172.26.168.128 area 478

A.导致网络性能下降
B.接口间的流量控制策略复杂
C.策略不能绑定到主机组或子网，通过一个接口的所有流量经过同样的检查
D.处理过于依赖ACL

A.流量过滤
B.流量检测
C.入侵检测
D.主动防御

A.ipv6 address PREFIX_1::1/64
B.ipv6 autoconfig 2001:db8:2222:7272::72/64
C.ipv6 autoconfig
D.ipv6 address 2001:db8:2222:7272::72/64

A.show inventory
B.show flash：filesys
C.dir flash：include chassis
D.show diag
E.show controllers

A.RIPng
B.OSPFv3
C.static
D.IS-IS for IPv6

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.边际防火墙
B.状态防火墙
C.软件防火墙
D.应用网关防火墙

A.link bandwidth
B.hop count
C.link cost
D.administrative distance