A routing protocol is required that supports:1)routing update authentication2)an addressing scheme that conserves IP addresses3)multiple vendors4)a network with over 50 routers Which routing protocol fulfills these requirements（）。

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• Part of the job as a network administrator is being able to make a distinction between routed protocols and routing protocols. Which of the following statements is true regarding them?（）

  A . A routing protocol is assigned to an interface and determines the method of packet delivery. B . A routed protocol is assigned to an interface and determines the method of packet delivery. C . A routing protocol determines the path of a packet through a network. D . A routed protocol determines the path of a packet through a network. E . A routing protocol operates at the transport layer of the OSI model. F . A routed protocol updates the routing table of a router.

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• When BGP is used as the PE-CE routing protocol, which of these statements is correct?（）

  A . On the CE router, PE neighbors must be configured in the VRF context on the CE router B . On PE routers, the CE IBGP neighbors are configured in the global BGP configuration C . On PE routers, the CE EBGP neighbors are configured in the VRF context D . A separate BGP process must be used on the PE routers for CE routers so that they do not use the same BGP routing process as that used for the PE router's other provider neighbor

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• Which routing protocol supports a flexible area structure using routing levels one and two?（）

  A . OSPF B . EIGRP C . IS-IS D . BGP

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• EIGRP is being used as the routing protocol on the company network. While troubleshooting somenetwork connectivity issues， you notice a large number of EIGRP SIA （Stuck in Active） messages.What causes these SIA routes？（）

  A . The neighboring router stops receiving ACK packets from this router B . The neighboring router starts receiving route updates from this router C . The neighboring router is too busy to answer the query （generally caused by high CPUutilization） D . The neighboring router is having memory problems and cannot allocate the memory to processthe query or build the reply packet

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• Which parameter can be tuned to affect the selection of a static route as a backup.when a dynamic protocol is also being used?（）

  A . link bandwidth B . hop count C . link cost D . administrative distance E . link delay

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• Which two design recommendations are most appropriate when OSPF is the data center core routing protocol? （）

  A . Never use passive interfaces. B . Use NSSA areas from the core down. C . Use totally stub areas to stop type 3 LSAs. D . Use the lowest Ethernet interface IP address as the router ID. E . Tune OSPF timers to enable OSPF to achieve quicker convergence.

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• Which characteristics are representative of a link-state routing protocol?（）

  A . Provide common view of entire topology B . Exchange routing tables with neighbors. C . Calculates shortest path. D . Utilizes event triggered updates. E . Utilizes frequent periodic updates.

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• Which routing protocol supports a flexible area structure using routing levels one and two？（）

  A .  OSPF B .  EIGRP C .  IS-IS D .  BGP

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• Which two statements about the IS -IS routing protocol are true?（）

  A . IS - IS is capable of supporting IPv4 and IPv6. B . IS - IS is only capable of supporting IPv4 and CLNS. C . IS - IS routers use ES - IS hellos (ESH) to establish and to maintain neighbor relationships. D . IS - IS routers run the Bellman - Ford algorithm against their LSDBs to pick the best paths. E . Level 1 routers learn about paths within the area of which they are a part. F . Level 2 routers learn about paths both within areas and between areas.

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• Which two statements are characteristics of a distance vector routing protocol?（）

  A . RIP is an example of distance vector routing protocols. B . Updates are periodic and include the entire routing table. C . Routing updates are sent only after topology changes D . The protocol can be useful in hub-and-spoke and hierarchical networks. E . Convergence is usually faster than with link state protocols F . Each router has its own view of the topology

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• EIGRP is being used as the routing protocol on the PassGuide network. Whiletroubleshooting some network connectivity issues，you notice a large number of EIGRP SIA（StuckinActive）messages. What causes these SIA routes（）

  A . The neighboring router stops receiving ACK packets from this router. B . The neighboring router starts receiving route updates from this router. C . The neighboring router is too busy to answer the query(generally caused by high CPU utilization). D . The neighboring router is having memory problems and cannot allocate the memory to process the query or build the reply packet.

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• Which of these statements is true of routing protocols in a hub-and-spoke IPsec VPN topology？（）

  A .  EIGRP can summarize per interface. B .  OSPF router databases remain independent. C .  When they are configured with stubs， EIGRP regularly floods the topology. D .  OSPF topology decisions are made independent of hierarchy or area.

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• As a network engineer， you responsibility is to install， configure， operate， and troubleshoot networks. In your company’s network， EIGRP is the routing protocol. You have just discovered that two routers restarted the neighbor relationship.Why？ （）

  A . An update packet with init flag set from a known， already established neighbor relationship was received by one of the routers. B . The counters were deleted. C . The ARP cache was removed. D . The IP EIGRP neighbor relationship was cleared manually.

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• Which two design recommendations are most appropriate when OSPF is the data center core routing protocol？ （）

  A .  Never use passive interfaces. B .  Use NSSA areas from the core down. C .  Use totally stub areas to stop type 3 LSAs. D .  Use the lowest Ethernet interface IP address as the router ID. E .  Tune OSPF timers to enable OSPF to achieve quicker convergence

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• When EIGRP is used as the PE-CE routing protocol which of these statements is correct?（）

  A . EIGRP can be used only as the PE-CE routing protocol if the PE and CE routers are in the same AS B . Other EIGRP AS routes are automatically advertised to the CE router and do not require a redistribution configuration command to be configured C . Unlike other routing protocols that are used between PE and CE routers, EIGRP supports backdoor links D . Configure of the VPN is only required on the PE router

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• Which two design recommendations are most appropriate when EIGRP is the data center core routing protocol?（）

  A . Summarize data center subnets. B . Use passive interfaces to ensure appropriate adjacencies. C . Tune the EIGRP timers to enable EIGRP to achieve quicker convergence. D . Adjust the default bandwidth value to ensure proper bandwidth on all links. E . Advertise a default summary route into the data center core from the aggregation layer.

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• A routing protocol is required that supports: 1)routing update authentication 2)an addressing scheme that conserves IP addresses 3)multiple vendors 4)a network with over 50 routers Which routing protocol fulfills these requirements（）。

  A . RIPv1 B . RIPv2 C . EIGRP D . OSPF

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• Which routing protocol will continue to receive and process routing updates f rom neighbors after the passive - interface router configuration command is entered?（）

  A . EIGRP B . RIP C . OSPF D . IS - IS

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• A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（）

  A . For the two vlans to communicate，a network statement for the trunk interface needs to be added to the OSPF configuration. B . For the two vlans to communicate， a network statement for each subinterface needs to be  added  to the OSPF configuration. C . Direct inter-vlan communication does not require OSPF D . OSPF cannot be used if router-on-a-stick is configured on the router

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• RIP version 2 is being used as the routing protocol within the Testking network.What does RIP version 2 use to prevent routing loops?（）

  A . CIDR B . Split horizon C . Authentication D . Classless masking E . Hold-down timers F . Multicast routing updates G . Path Vectoring

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• Which  two routing protocols require a metric to be configured when redistributing routes from other protocols?（）

  A . RIP B . BGP C . IS - IS D . OSPF E . EIGRP

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• Refer to the exhibit. Which statement about dynamic routing protocols for this network is true？ （）

  <img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/3f045f77c2fdb845bea361bfaf30df1f.jpg' /> A.No dynamic interior routing protocol can summarize as shown B.Unless configured otherwise, EIGRP would automatically summa rize the prefixes as shown in the exhibit C.With this IP addressing scheme, EIGRP can be manually configured to summarize prefixes at the specified summarization points D.The IP address design lends itself to OSPF Each summarizing router would be an ABR, summarizing to the next area in the address hierarchy

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• In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.Open Shortest Path First(OSPF) is a(36)routing algorithm that(37)work clone on the OSI IS-IS intradomain routing protocol. This routing, as compared to distance-vector routing, requires(38)processing power. The(39)algorithm is used to calculate routes. OSPF routing table updates only take place when necessary,(40)at regular intervals.

  A．distance-vector B．link-state C．flow-based D．selective flooding

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