A router with a serial interface will be used for an ISDN link.What other function group devices are required to complete the connection to the service provider? （）
A network administrator needs to configure a serial link between the main office and a remote location. The router at the remote office is a non-Cisco router.How should the network administrator configure the serial interface of the main office router to make the connection?（）A.B.C.D.
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Use the output from the router shown in the graphic above to determine which of the following are correct.()A. Router John uses a link-state routing protocol.B. Router John will receive routing updates on the Serial0/0 interface.C. Router John will receive routing updates on the Serial0/1 interface.D. Router John will send routing updates out the Serial0/0 interface.E. Router John will send routing updates out the FastEthernet0/0 interface.F. Router John will send routing updates out the Serial0/1 interface.
Which command can be used to determine the type of cable attached to the Serial 0/0 interface on a router?（）A、show interfaces serial 0/0B、show running-configC、show versionD、show controllers serial 0/0E、show ip interfaceF、show line serial 0/0
You have just obtained a modular Cisco router with 2 serial connections and a BRI/U interface. What other physical piece of hardware is required in order to establish an ISDN connection?（）A、Nothing. The router is already suitable.B、A BRI WAN interface in the router.C、An external NT1 to terminate the local loop.D、A TA/NT1 device on the router.
When configuring a serial interface on a router, what is the default encapsulation?（）A、atm-dxiB、frame-relayC、hdlcD、lapbE、ppp
Which device enables a router serial interface to connect to the ISDN BRI?（）A、NT2B、NT1C、TED、TAE、TE1
What is the purpose of this command? ip route 0.0.0.0 0.0.0.0 serial0/0（）A、It configures a router to send all packets out interface serial 0/0.B、It configures a router to block routing updates from being sent out interface serial 0/0.C、It configures a router as a firewall, blocking all unauthorized packets from exiting serial 0/0.D、It configures a router to send all packets for unknown destination networks out interface serial 0/0.E、It configures a router to drop all packets for which the destination network is unknown.
