多项选择题
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.
Which of the following can LCP successfully negotiate d...
多项选择题Which of the following can LCP successfully negotiate during the establishment of a PPP connection?（）
A. Q.931 B. IPCP C. multilink D. CHAP E. callback
