A.A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line
B.A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line
C.A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line
D.A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line

A.增加网络带宽
B.提高网络可用性
C.降低网络传输费用
D.防止数据传输意外中止

A.支持路由协议
B.至少具备一个备份口
C.到少支持两个网络接口
D.协议至少要实现到网络层
E.具有存储、转发和寻径功能
F.至少支持两种以上的子网协议

A.00-e0-fe-01-23-45
B.00e0.fe01.2345
C.00e.0fe.-012.345
D.00e0.fe112345

A.This command should be executed from the global configuration mode
B.The IP address 10.121.16.8 is the local router port used to forward data
C.102 is the remote DLCI that will receive the information
D.This command is required for all Frame Relay configurations
E.The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC

A.PPP
B.WAP
C.HDLC
D.MPLS
E.L2TPv3
F.ATM

A.Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface
B.Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic
C.Configure many sub-interfaces on the same subnet
D.Configure a single sub-interface to establish multiple PVC connections to multiple remote router interfaces

A.show reload
B.show boot
C.show running-config
D.show version

A.LAN
B.routing
C.WAN
D.network

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