单项选择题

Refer to the exhibit.The network administrator is in ac……

Refer to the exhibit.The network administrator is in acampus building distant from Building B.WANRouter is hosting a newly installed WAN link on interface S0/0.The new link is not functioning and the administrator needs to determine if the correct cable has been attached to the S0/0 interface.How can the administrator accurately verify the correct cable type on S0/0 in the most efficient manner?（）

A.Telnet to WANRouter and execute the command show interfaces S0/0
B.Telnet to WANRouter and execute the commandshow processes S0/0
C.Telnet to WANRouter and execute the command show running-configuration
D.Telnet to WANRouter and execute the command show controller S0/0
E.Physically examine the cable between WANRouter S0/0 and the DCE.
F.Establish a console sessionon WANRouter and execute the command show interfaces S0/0

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单项选择题Refer to the exhibit.How many broadcast domains exist in theexhibited topology？（）

A.one
B.two
C.three
D.four
E.five
F.six

单项选择题As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?（）

A.24
B.4
C.3
D.16

单项选择题The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（）

A.The Gallant router has the wrong LMI type configured
B.Inverse ARP is providing the wrong PVC information to the Gallant router
C.The S3 interface of the Steele router has been configured with the frame-relay encapsulation ietf command
D.The frame-relay map statement in the Attalla router for the PVC to Steele is not correct
E.The IP address on the serial interface of the Attalla router is configured incorrectly

单项选择题How should arouter 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 apoint-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

多项选择题Which of the following describes the roles of devices in a WAN?（）

A.A CSU/DSU terminates a digital local loop
B.A modem terminates a digital local loop
C.A CSU/DSU terminates an analog local loop
D.A modem terminates an analog local loop
E.A router is commonly consideredaDTEdevice
F.A router is commonly considereda DCE device