单选题A Router with a BRI/T interface will be used for an ISDN Connection what other ISDN device is required to complete this connection? （）ATE1BTE2CNT1DNT2
单选题
A Router with a BRI/T interface will be used for an ISDN Connection what other ISDN device is required to complete this connection? （）
A
TE1
B
TE2
C
NT1
D
NT2
参考解析
解析：
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[说明]下面是某路由器的部分配置信息，解释部分语句的含义。[配置路由器信息]Current configuration：!hostname router1isdn switch-type basic-net3 (1)!interface Ethernet0ip address 10.0.0.1 255.255.255.0ip nat inside (2)!interface bri 0ip address negotiated (3)ip nat outsideencapsulation PPPPPP authentication pap callin (4)PPP multlink (5)dialer-group 1dialer string 2633PPP pap sent-username 263 password 263 (6)ip route 0.0.0.0 0.0.0.0 bri 0access-list 2 permit any (7)dialer-list 1 protocol ip permit (8)ip nat inside source list 2 interface bri 0 overload (9)……End
You are experiencing contention in the queue on an egress interface of the router. Which policy action should be used for congestion control?() A.markB.colorC.filterD.discard
阅读以下说明，回答【问题1】～【问题4】，将解答填入空白处。【说明】某小型单位的网络图如图5所示，Cisco路由器有ISDN模块，单位通过ISDN连接Internet。ISDN是指近年来供最终用户使用的一套数字服务，包括电话网络的数字化，以便ISP能够在现有的电话线路上以一个最终用户接口提供给最终用户多种服务。ISDN用更高速的数字设备代替传统的老式电话业务POTS设备和配线系统。ISDN的接口可以是PRI或BRI。ISDN的信道有两种类型：B和D。B信道主要是用来运送数据的工具，每个B信道拥有最大可达64kb/s的吞吐量，主要用于电路交换的数据通信，也可用于基于包交换的数据通信。D信道用来传输请求ISDN交换的信令。实际上， D信道提供一个到电信提供商中心局的本地回答，也可用于传送基于包交换的数据(如 X.25)。BRI是最典型的ISDN连接，并且是路由器上的一个本地ISDN接口，基本带宽是 2B+D。在ISDN的BRI安装中，NT1(NT2)是一个重要的小设备，NT1类似于串行连接中用到的CSU/DSU，它是终接本地回路的设备(其实NT1就是一个将电话2线变4线的设备)。NT1至少有2个接口：一个S/T接口和一个U接口。S/T接口连到路由器的BRI接口上；U接口连接到ISP提供的插座上。许多具有BRI功能的Cisco路由器都有一个集成的NT1接口。这些接口都有一个BRIU标签，如果底板上没有这个特性，则接口会标BRIS/T，从而需要一个外部的NT1。这个本地的ISDN接口就是路由器的TE1接口。TE1终端适配卡专用于连接ISDN。以下是路由器部分的配置清单：Router(config) ISDN switch-type basic-5essRouter(config) interface BRI0Router(config-if) ip add 192.168.10.1 255.255.255.0Router(config-if) encapsulation PPPRouter(config-if) dialer idle-time out 1 80Router(config-if) dialer mapip 192.168.10.2 07314433018 (1)Router(config-if) dialer-group1Router(config) dialer-list protocol ip permitISDN分哪几层? NT2(网络终端连接设备)提供哪两种交换功能?
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. TE1B. TE2C. TAD. NT1E. NT2
What is the purpose of the OSPF router ID in a OR／BOR election?() A. It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point networkB. It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF routerC. It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access networkD. It is used to determine which interfaces will send Hello packets to neighboring OSPF routers
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 adapterB. a CSU/DSUC. an external ISDN TA and NT1D. The non-modular router cannot connect to an ISDN service. The network administrator must purchase a modular router with an ISDN BRI-U card.
Which ISDN device converts the four－wire BRI signals from an S／T interface into two－wire signals of a U interface?() A.TE1B.NT-2C.TAD.TE2E.NT-1
Which device enables a router serial interface to connect to the ISDN BRI?() A.NT2B.NT1C.TED.TAE.TE1
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.
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.
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、TE1B、TE2C、TAD、NT1E、NT2
A Router with a BRI/T interface will be used for an ISDN Connection what other ISDN device is required to complete this connection? （）A、TE1B、TE2C、NT1D、NT2
Which device enables a router serial interface to connect to the ISDN BRI?（）A、NT2B、NT1C、TED、TAE、TE1
Which of the following are correct regarding ISDN?（）A、Legacy DDR can use port information to define interesting traffic.B、Legacy DDR can configure multiple dialer configurations on the same interface.C、Legacy DDR can use ACLs to define interesting traffic.D、HDLC or PPP can be used to encapsulate ISDN D channel information.E、The BRI interfaces on ISDN routers with dialer profiles configured cannot belong to multiple dialer pools.F、Dialer profiles cannot use extended ACLs to define interesting traffic.
What is the purpose of the OSPF router ID in a OR/BOR election?（）A、It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point networkB、It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF routerC、It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access networkD、It is used to determine which interfaces will send Hello packets to neighboring OSPF routers
TestKing.com is configuring the serial interface of a Cisco router to connect to the router of a new ISP. A full T1 is being used for the Internet connection. After issuing the show interface serial 0/0 command, it is observed that the interface is UP and the line protocol is DOWN. Which of the following commands could fix this problem?（）A、Border# copy running-config startup-configB、Border(config)# no shutdownC、Border(config-if)# encapsulation pppD、Border(config-if)# no cdp enableE、Border(config-if)# ip routing
What is true about access control on bridged and routed VLAN traffic？ （）A、 Router ACLs can be applied to the input and output directions of a VLAN interface.B、 Bridged ACLs can be applied to the input and output directions of a VLAN interface.C、 Only router ACLs can be applied to a VLAN interface.D、 VLAN maps and router ACLs can be used in combination.E、 VLAN maps can be applied to a VLAN 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 adapterB、a CSU/DSUC、an external ISDN TA and NT1D、The non-modular router cannot connect to an ISDN service. The network administrator must purchase a modular router with an ISDN BRI-U card.
Which ISDN device converts the four-wire BRI signals from an S/T interface into two-wire signals of a U interface?（）A、TE1B、NT-2C、TAD、TE2E、NT-1
单选题Which command is used to display the placement and direction of an IP access control list on a router?（）Ashow access-listBshow ip routeCshow ip interfaceDshow interfaceEshow interface listFshow ip interface brief
单选题Which device enables a router serial interface to connect to the ISDN BRI?（）ANT2BNT1CTEDTAETE1
单选题You are experiencing contention in the queue on an egress interface of the router. Which policy action should be used for congestion control?（）AmarkBcolorCfilterDdiscard
多选题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? （）ATE1BTE2CTADNT1ENT2
单选题Which ISDN device converts the four-wire BRI signals from an S/T interface into two-wire signals of a U interface?（）ATE1BNT-2CTADTE2ENT-1
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?（）ANothing. The router is already suitable.BA BRI WAN interface in the router.CAn external NT1 to terminate the local loop.DA TA/NT1 device on the router.
多选题Which of the following are correct regarding ISDN?（）ALegacy DDR can use port information to define interesting traffic.BLegacy DDR can configure multiple dialer configurations on the same interface.CLegacy DDR can use ACLs to define interesting traffic.DHDLC or PPP can be used to encapsulate ISDN D channel information.EThe BRI interfaces on ISDN routers with dialer profiles configured cannot belong to multiple dialer pools.FDialer profiles cannot use extended ACLs to define interesting traffic.
多选题What is true about access control on bridged and routed VLAN traffic？ （）ARouter ACLs can be applied to the input and output directions of a VLAN interface.BBridged ACLs can be applied to the input and output directions of a VLAN interface.COnly router ACLs can be applied to a VLAN interface.DVLAN maps and router ACLs can be used in combination.EVLAN maps can be applied to a VLAN interface