單項選擇題The command frame-relay map ip 10.121.16.8 102 broadcast was entered on the router. Which of the following statements is true concerning this command（）。

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


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1.多項選擇題Which three options are valid WAN connectivity methods? （）

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

2.單項選擇題How should a router that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates（）。

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

3.單項選擇題Which command reveals the last method used to powercycle a router?（）

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

5.單項選擇題Which IPV6 routing protocol uses multicast group FF02：：8 to send updates？（）

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

8.單項選擇題A company implements video conferencing over IP on their Ethernet LAN. The users notice that the network slows down, and the video either stutters or fails completely. What is the most likely reason for this?（）

A.minimum cell rate (MCR)
B.quality of service (QoS)
C.modulation
D.packet switching exchange (PSE)
E.reliable transport protocol (RTP)

9.單項選擇題指定邏輯通道備份主接口使用的命令是（）。

A.standby logic-channel logic-channel-number [priority]
B.standby nterface interface-type interface-number
C.logic-channel logic-channel-number
D.dialer map protocol next-hop-address dialer-string[logic-channel logic-channel-number]

10.多項選擇題Which two statements best describe the wireless security standard that is defined by WPA (Choose two.)（）。

A.It specifies use of a static encryption key that must be changed frequently to enhance security
B.It requires use of an open authentication method
C.It specifies the use of dynamic encryption keys that change each time a client establishes a connection
D.It requires that all access points and wireless devices use the same encryption key
E.It includes authentication by PSK

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