多項選擇題Which are three reasons that an organization with multiple branch offices and roaming users might implement a Cisco VPN solution instead of point-to-point WAN links？（）

A.reduced cost
B.better throughput
C.increased security
D.scalability
E.reduced latency
F.broadband incompatibility


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1.單項選擇題Refer to the exhibit. What is the meaning of the term dynamic as displayed in the output of the show frame-relay map command shown?（）

A.The Serial0/0 interface is passing traffic.
B.The DLCI 100 was dynamically allocated by the router
C.The Serial0/0 interface acquired the IP address of 172.16.3.1 from a DHCP server
D.The DLCI 100 will be dynamically changed as required to adapt to changes in the Frame Relay cloud
E.The mapping between DLCI 100 and the end station IP address 172.16.3.1 was learned through Inverse ARP

2.單項選擇題

Router A is unable to reach Router B.Both routers are running ios version 12.0.After reviewing the command output and graphic,what is the most likely cause of the problem?（）

A.incorrect bandwidth configuration
B.incorrect LMI configuration
C.incorrect map statement
D.incorrect IP address

5.多項選擇題Which two options are valid WAN connectivity methods?（）

A.PPP
B.WAP
C.DSL
D.Ethernet
E.L2TPv3