单选题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

At a branch location, TestKing.com has deployed a non modular router that is equipped with two serial interfaces and two Ethernet interfaces.What additional equipment must be used to allow the branch office to connect to the central office by using an ISDN service?（）

A. a serial cable with a V.35 to RJ45 adapter

B. a CSU/DSU

C. an external ISDN TA and NT1

D. The non-modular router cannot connect to an ISDN service. The network administrator must purchase a modular router with an ISDN BRI-U card.

While logged into a router you manually shut down the serial 0 interface using the "shutdown" interface configuration command. You then issue the "show interface serial 0" command in exec mode. What could you expect the status of the serial 0 interface to be?（）

A. Serial 0 is up, line protocol is up

B. Serial 0 is up, line protocol is down

C. Serial 0 is down, line protocol is down

D. Serial 0 is down, line protocol is up

E. Serial 0 is administratively down, line protocol is down

F. Serial 0 is administratively down, line protocol is up

You have just purchased a brand new router and wish to have the router prompt you through the initial configuration commands. Which router mode does this describe?

A．ROM Monitor mode

B．SETUP mode

C．Autoflash mode

D．RXBOOT mode

E．None of the above

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.

A.show inventory

B.show flash：filesys

C.dirflash：include chassis

D.show diag

E.show controllers

A. TK1(config-if)# encapsulation hdlc ansi

B. TK1(config-if)# encapsulation ppp

C. TK1(config-if)# encapsulation LAPD

D. TK1(config-if)# encapsulation frame-relay ietf

E. TK1(config)#encapsulation ppp

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.

Refer to the exhibit. Routers R1 and R2 have established a neighbor relationship and are exchanging routing information. The network design requires that R1 r eceive routing updates from R2, but not advertise any routes to R2. Which configuration command sequence will successfully accomplish this task? （）

A. R1(config)# router eigrp 1 R1(config - router)# passive - interface serial 0

B. R1(config)# access - list 2 0 deny any R1(config)# router eigrp 1 R1(config - router)# distribute - list 20 out serial 0

C. R2(config)# access - list 20 permit any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 in serial 0

D. R1(config)# access - list 20 permit any R 1(config)# router eigrp 1 R1(config - router)# distribute - list 20 in serial 0

E. R2(config)# access - list 20 deny any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 out serial 0

F. R2(config)# router eigrp 1 R2(config - router)# passive - interface serial 0

Refer to the exhibit. The two exhibit devices are the only Cisco devices on the network. The serial network between the two devices has a mask of 255.255.255.252. Given the output that is shown, what three statements are true of these devices? （）

A.The Manchester serial address is 10.1.1.1

B.The Manchester serial address is 10.1.1.2

C.这个Manchester路由器串口地址为：10.1.12

D.The London router is a Cisco 2610.

E.The Manchester router is a Cisco 2610.

F.The CDP information was received on port Serial0/0 of the Manchester router.

G.The CDP information was sent by port Serial0/0 of the London Router.