Routers A and B are connected with a point-to-point OC-3 interface. Each router's OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in the same area. How many IS-IS adjacencies exist between the two routers?（）A、0B、1C、2D、3
Routers A and B are connected with a point-to-point OC-3 interface. Each router's OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in the same area. How many IS-IS adjacencies exist between the two routers?（）
- A、0
- B、1
- C、2
- D、3
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Routers A and B are connected with a point-to-point OC-3 interface. Each router‘s OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in the same area.How many IS-IS adjacencies exist between the two routers?（）A.0B.1C.2D.3
Routers A and B are connected with a point-to-point OC-3 interface. Each routers OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in different areas. How many IS-IS adjacencies exist between the two routers?（）A.0B.1C.2D.3
Which of the following must match for two directly connected routers running OSPF to establish a neighbor adjacency?() A. area IDsB. process IDsC. router IDsD. hello timers
Which statement is true about IBGP routers? () A. They must be fully meshedB. They can be in a different ASC . They do not need to be directly connectedD. They must be directly connected
The PassGuide network consists of a series of routers that are all configured for IBGP. Which one of the following IBGP characteristics is true() A.The IBGP routers must always be fully meshed.B.The IBGP routerscan be in a different AS.C.The IBGP routersmust be directly connected.D.TThe IBGP routersdo not need to be directly connected.E.None of the other alternatives apply are true
Two Cisco routers are connected to each other and are enabled CDP. Serial line is up，protocol is also up but cdp neighbor not working. What layer of the OSI model does the problem most likely exist？
In which of the following scenarios would the "show cdp neighbors detail"command be an appropriate troubleshooting tool?（）A、Two switches are connected via a trunk. Both switches have been assigned an IP address, subnet mask, and default gateway. A ping is successful between the two switches. However, VLAN information is not passed from one switch to the other switch.B、A router and a switch have been assigned an IP address, a subnet mask, and a default gateway. They are directly connected, but a ping between the two devices fails.C、A router connects to another router through a serial interface. Both routers have been assigned an IP address, subnet mask, and default gateway. The routers are running RIP and the networks directly connected to the first router do not pass to the second router. However, a ping from one router to the serial interface of the directly connected neighboring router is successful.D、A router connects to another router via a switch. Both routers and the switch have been assigned an IP address, subnet mask, and default gateway. Neither the routers nor the switch are able to ping one of the hosts that is directly to the switch.
The PassGuide network consists of a series of routers that are all configured for IBGP. Which one of the following IBGP characteristics is true（）A、The IBGP routers must always be fully meshed.B、The IBGP routerscan be in a different AS.C、The IBGP routersmust be directly connected.D、TThe IBGP routersdo not need to be directly connected.E、None of the other alternatives apply are true
Routers A and B are connected with a point-to-point OC-3 interface. Each routers OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in different areas. How many IS-IS adjacencies exist between the two routers?（）A、0B、1C、2D、3
Which statement is true about IBGP routers? （）A、They must be fully meshedB、They can be in a different ASC、They must be directly connected
Two routers configured to run BGP have been connected to a firewall， one on the inside interface and one on the outside interface. BGP has been configured so the two routers should peer， including the correct BGP session endpoint addresses and the correct BGP session hop-count limit （EBGP multihop）. What is a good first test to see if BGP will work across the firewall？（）A、Attempt to TELNET from the router connected to the inside of the firewall to the router connected to the outside of the firewall. If telnet works， BGP will work， since telnet and BGP both use TCP to transport data.B、Ping from the router connected to the inside interface of the firewall to the router connected to the outside interface of the firewall. If you can ping between them， BGP should work， since BGP uses IP to transport packets.C、There is no way to make BGP work across a firewall without special configuration， so there is no simple test that will show you if BGP will work or not， other than trying to start the peering session.D、There is no way to make BGP work across a firewall.
Two routers configured to run BGP have been connected to a firewall，one on the inside interface and one on the outside interface. BGP has been configured so the two routers should peer，including the correct BGP session endpoint addresses and the correct BGP session hop-count limit （EBGP multihop）. What is a good first test to see if BGP will work across the firewall？（）A、Attempt to TELNET from the router connected to the inside of the firewall to the router connected to the outside of the firewall.If telnet works，BGP will work，since telnet and BGP both use TCP to transport dataB、Ping from the router connected to the inside interface of the firewall to the router connected to the outside interface of the firewall.If you can ping between them，BGP should work，since BGP uses IP to transport packetsC、There is no way to make BGP work across a firewall without special configuration，so there is no simple test that will show you if BGP will work or not，other than trying to start the peering sessionD、There is no way to make BGP work across a firewall
What are three key concepts that apply when configuring the EIGRP stub routing feature in a hub and spoke network？（）A、A hub router prevents routes from being advertised to the remote router.B、Only remote routers are configured as stubs.C、Stub routers are not queried for routes.D、Spoke routers connected to hub routers answer the route queries for the stub router.E、A stub router should have only EIGRP hub routers as neighbors.F、EIGRP stub routing should be used on hub routers only.
When troubleshooting an EIGRP connectivity problem, you notice that two connected EIGRP routers are not becoming EIGRP neighbors. A ping between the two routers was successful.What is the next thing that should be checked?（）A、Verify that the EIGRP hello and hold timers match exactly.B、Verify that EIGRP broadcast packets are not being dropped between the two routers with the show ip EIGRP peer command.C、Verify that EIGRP broadcast packets are not being dropped between the two routers with the show ip EIGRP traffic command.D、Verify that EIGRP is enabled for the appropriate networks on the local and neighboring router.
What are two reasons a network administrator would use CDP (Choose two.)（）。A、to verify the type of cable interconnecting two devicesB、to determine the status of network services on a remote deviceC、to obtain VLAN information from directly connected switchesD、to verify Layer 2 connectivity between two devices when Layer 3 failsE、to obtain the IP address of a connected device in order to telnet to the deviceF、to determine the status of the routing protocols between directly connected routers
What are two reasons a network administrator would use CDP?（）A、to verify the type of cable interconnecting two devicesB、to determine the status of network services on a remote deviceC、to obtain VLAN information from directly connected switchesD、to verify Layer 2 connectivity between two devices when Layer 3 failsE、to obtain the IP address of a connected device in order to telnet to the deviceF、to determine the status of the routing protocols between directly connected routers
单选题In which of the following scenarios would the "show cdp neighbors detail"command be an appropriate troubleshooting tool?（）ATwo switches are connected via a trunk. Both switches have been assigned an IP address, subnet mask, and default gateway. A ping is successful between the two switches. However, VLAN information is not passed from one switch to the other switch.BA router and a switch have been assigned an IP address, a subnet mask, and a default gateway. They are directly connected, but a ping between the two devices fails.CA router connects to another router through a serial interface. Both routers have been assigned an IP address, subnet mask, and default gateway. The routers are running RIP and the networks directly connected to the first router do not pass to the second router. However, a ping from one router to the serial interface of the directly connected neighboring router is successful.DA router connects to another router via a switch. Both routers and the switch have been assigned an IP address, subnet mask, and default gateway. Neither the routers nor the switch are able to ping one of the hosts that is directly to the switch.
单选题When troubleshooting an EIGRP connectivity problem, you notice that two connected EIGRP routers are not becoming EIGRP neighbors. A ping between the two routers was successful.What is the next thing that should be checked?（）AVerify that the EIGRP hello and hold timers match exactly.BVerify that EIGRP broadcast packets are not being dropped between the two routers with the show ip EIGRP peer command.CVerify that EIGRP broadcast packets are not being dropped between the two routers with the show ip EIGRP traffic command.DVerify that EIGRP is enabled for the appropriate networks on the local and neighboring router.
单选题Routers A and B are connected with a point-to-point OC-3 interface. Each routers OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in different areas. How many IS-IS adjacencies exist between the two routers?（）A0B1C2D3
单选题You enabled CDP on two Cisco Routers which are connected to each other. The Line and Protocol statusfor the interfaces on both routers show as UP but the routers do not see each other a CDP neighbors.Which layer of the OSI model does the problem most likely exist？（）APhysicalBSessionCApplicationDData-LinkENetwork
单选题The PassGuide network consists of a series of routers that are all configured for IBGP. Which one of the following IBGP characteristics is true（）AThe IBGP routers must always be fully meshed.BThe IBGP routerscan be in a different AS.CThe IBGP routersmust be directly connected.DTThe IBGP routersdo not need to be directly connected.ENone of the other alternatives apply are true
单选题Which statement is true about IBGP routers? （）AThey must be fully meshedBThey can be in a different ASCThey must be directly connected
多选题Which two statements are correct about Layer 2 broadcast frames?（）ALayer 2 broadcast frames are processed by all devices on the same VLANBLayer 2 broadcast frames are discarded by routers that connect to multiple VLANsCLayer 2 broadcast frames are relayed by routers to all connected VLANsDLayer 2 broadcast frames are relayed by switches to devices on the same VLAN
多选题Which of the following must match for two directly connected routers running OSPF to establish a neighbor adjacency?（）Aarea IDsBprocess IDsCrouter IDsDhello timers
单选题Routers A and B are connected with a point-to-point OC-3 interface. Each router’s OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in different areas.How many IS-IS adjacencies exist between the two routers？（）A0B1C2D3
多选题What are three key concepts that apply when configuring the EIGRP stub routing feature in a hub and spoke network？（）AA hub router prevents routes from being advertised to the remote router.BOnly remote routers are configured as stubs.CStub routers are not queried for routes.DSpoke routers connected to hub routers answer the route queries for the stub router.EA stub router should have only EIGRP hub routers as neighbors.FEIGRP stub routing should be used on hub routers only.
多选题What are two reasons a network administrator would use CDP (Choose two.)（）。Ato verify the type of cable interconnecting two devicesBto determine the status of network services on a remote deviceCto obtain VLAN information from directly connected switchesDto verify Layer 2 connectivity between two devices when Layer 3 failsEto obtain the IP address of a connected device in order to telnet to the deviceFto determine the status of the routing protocols between directly connected routers
单选题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?（）AserialupBclockCclockrateDdcerateEdterate