单项选择题
A. Show interface lmi B. Show frame-relay lmi C. Show interface frame-relay D. Debug frame-relay interface.
A new frame relay connection is being brought up. Which...
多项选择题A new frame relay connection is being brought up. Which of the following are frame relay LMI type options that can be configured on this new link?（）
A. EIA/TIA B. Q.932 C. Q.933A D. IEEE E. Cisco F. Annex D
In a lab, two routers are connected directly together u...
单项选择题In a lab, two routers are connected directly together using serial interfaces in a back-to-back configuration. No external DCE devices are being used. What additional command is needed to bring this link up?（）
A.serialup B.clock C.clockrate D.dcerate E.dterate
You have just obtained a modular Cisco router with 2 se...
单项选择题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.
