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单选题
Which device enables a router serial interface to connect to the ISDN BRI?（）
A
NT2
B
NT1
C
TE
D
TA
E
TE1
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Which device enables a router serial interface to connect to the ISDN BRI?()
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Which command can be used to determine the type of cable attached to the Serial 0／0 interface on a router?()
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Use the output from the router shown in the graphic above to determine which of the following are correct.()
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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
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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.
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Which device enables a router serial interface to connect to the ISDN BRI?（）A、NT2B、NT1C、TED、TAE、TE1
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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.
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Which statements is true about Foreign Exchange Station （FXS） ports on a router？（）A、the FXS interface allows an analog connection to be directed at the public switched telephone network （PSTN’s） central officeB、the FXS interface connect directly to a standard telephone， fax machine， or sililar device and supplies ring， voltage， and dial toneC、the FXS interface connect directly to an IP phone and supplies ring， voltage， and dial toneD、the FXS interface connect directly to ISDN voice channels
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On the serial interface of a router, an inbound access list is configured to deny all traffic from UDP and TCP ports 21, 23, and 25. All other traffic is permitted. Based on this information, which types of traffic will be allowed through this interface?（）A、SMTPB、DNSC、FTPD、TelnetE、HTTPF、POP3
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A standard access control list has been configured on a router and applied to interface Serial 0 in anoutbound direction. No ACL is applied to Interface Serial 1 on the same router. What will happen whentraffic being filtered by the access list does not match the configured ACL statements for Serial 0？（）A、The traffic is droppedB、The resulting action is determined by the destination IP addressC、The source IP address is checked，and，if a match is not found， traffic is routed out interface Serial 1D、The resulting action is determined by the destination IP address and port number
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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
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The Peanut router is able to successfully ping the Serial 0 and Ethernet 0 interface of the Popcorn router, but a ping issued to the Ethernet 1 interface fails. Based on the above output, what are the potential causes of this problem?（）A、The Popcorn router is not forwarding RIP updates.B、The Popcorn router did not include network 192.168.12.0 in its routing configuration.C、The Ethernet1 interface of the Popcorn router is shutdown.D、The clockrate is not present in the configuration of one of the routers.E、The Serial interface of the Popcorn router is not operating.
考题
Which of the following is a layer 3 device that separates broadcast domains?（）A、Network Interface CardB、HubC、BridgeD、Router
考题
Which two methods are used to assign an IP address to a WX device? （）(Choose two.)A、SSHB、TelnetC、WebViewD、device front panelE、serial console (command-line interface)
考题
单选题Which device enables a router serial interface to connect to the ISDN BRI?（）A
NT2B
NT1C
TED
TAE
TE1
考题
多选题On the serial interface of a router, an inbound access list is configured to deny all traffic from UDP and TCP ports 21, 23, and 25. All other traffic is permitted. Based on this information, which types of traffic will be allowed through this interface?（）ASMTPBDNSCFTPDTelnetEHTTPFPOP3
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多选题The Peanut router is able to successfully ping the Serial 0 and Ethernet 0 interface of the Popcorn router, but a ping issued to the Ethernet 1 interface fails. Based on the above output, what are the potential causes of this problem?（）AThe Popcorn router is not forwarding RIP updates.BThe Popcorn router did not include network 192.168.12.0 in its routing configuration.CThe Ethernet1 interface of the Popcorn router is shutdown.DThe clockrate is not present in the configuration of one of the routers.EThe Serial interface of the Popcorn router is not operating.
考题
单选题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.
考题
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 in the router.C
An external NT1 to terminate the local loop.D
A TA/NT1 device on the router.
考题
单选题Which statements is true about Foreign Exchange Station （FXS） ports on a router？（）A
the FXS interface allows an analog connection to be directed at the public switched telephone network （PSTN’s） central officeB
the FXS interface connect directly to a standard telephone， fax machine， or sililar device and supplies ring， voltage， and dial toneC
the FXS interface connect directly to an IP phone and supplies ring， voltage， and dial toneD
the FXS interface connect directly to ISDN voice channels
考题
单选题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
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