A.protecting a server frome unauthorized acces
B.controlling path selection，based on the route metric
C.reducing router CPU utilization
D.filterring packets that are passing through a router

A.Branch-Router2 is configured to send both RIPv1 and RIPv2 updates.
B.Gateway-Router is configured to only receive RIPv2 updates.
C.Gateway-router is configured to receive only RIPv1 updates.
D.Branch-Router1 is configured to only send RIPv1 updates

A.使用RADIUS代理服務器提供可擴展性
B.只加密密碼
C.將RADIUS認證和授權結合成一個過程
D.支持遠程訪問技術、802.1X和SIP

A.standardization
B.conversion
C.encapsulation
D.synchronization

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

A.path cisco.com
B.debug cisco.com
C.trace cisco.com
D.traceroute cisco.com

A.不兼容TACACS和XTACACS
B.認證和授權分離
C.加密所有通信
D.使用TCP端口49

A.Serial0/1 is up, line protocol is down
B.Serial0/1 is down, line protocol is down
C.Serial0/1 is up, line protocol is up
D.Serial0/1 is administratively down, line protocol is down

A.基于AAA授權
B.本地AAA認證
C.基于服務器的AAA認證
D.AAA記賬

A.Addresses are not hierarchical and are assigned at random.
B.Only one IPv6 address can exist on a given interface.
C.There are 2.7 billion addresses available.
D.Broadcasts have been eliminated and replaced with multicasts.