OSPF routing uses the concept of areas. What are the characteristics of OSPF areas?（）

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• A new network has been configured using OSPF as the routing protocol. With which network type will OSPF establish router adjacencies but not perform the DR/BDR election process?（）

  A . point-to-point B . Backbone area 0 C . Broadcast multicast D . Non-broadcast multi-access E . The DR/BDR process is done for all interface type

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• What are some of the characteristics of the OSPF routing protocol?（）

  A . It confines network instability to a single area of network. B . It increases the routing overhead of the network C . It supports VLSM D . It routes between Autonomous Systems. E . It allows extensive control of routing updates F . None of the above

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• If a metric is not specified for routes that are redistributed into OSPF， the default metric that is assigned to the routes is 20， except for redistributed BGP routes. What is the metric that is assigned to redistributed BGP routes？（）

  A . 0 B . 1 C . 10 D . 200

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• During a redistribution of routes from OSPF into EIGRP, an ad ministrator notices that none of the OSPF routes are showing in EIGRP. What are two possible causes?（）

  A . incorrect distribute lists have been configured B . missing ip classless command C . CEF not enabled D . no default metric configured for EIGRP

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• Process EIGRP 1 is redistributing routes from process OSPF 2. Which two of the following methods may be used to set the metrics of the redistributed routes?（）

  A . Let the metrics default. B . Set the metric components using the redistri bute command's metric keyword. C . Set the metric components using the default - metric router subcommand. D . Set the integer (composite) metric using the redistribute command's metric keyword.

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• Which IOS commands can a network technician use to verify all RIP, IGRP,EIGRP, and OSPF routing protocol configurations?（）

  A . debug ip routing B . show running-config C . show ip route protocols D . show ip protocols E . show protocols al

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• A router learns about a remote network from EIGRP, OSPF, and a static route. Assuming all routing protocols are using their default administrative distance, which route will the router use to forward data to the remote network（）。

  A . The router will use the static route. B . The router will use the OSPF route. C . The router will use the EIGRP route. D . The router will load balance and use all three routes.

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• Router R1 sets a route tag for subnet 10.1.1.0/24 when redistributing from  OSPF into EIGRP.Which of the following unit is assigned to the route tag?（）

  A . Kilobits/seconD B . Tens of microseconds C . Cost D . Hop count E . No unit is assigneD

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• What are three characteristics of the OSPF routing protocol?（）

  A . It converges quickly. B . OSPF is a classful routing protocol. C . It uses cost to determine the best route. D . It uses the DUAL algorithm to determine the best route. E . OSPF routers send the complete routing table to all directly attached routers. F . OSPF routers discover neighbors before exchanging routing information.

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• You use OSPF as your network routing protocol. You use the command show ip route and you see several routes described as O， O IA， O E1， and O E2. What routes are in your area？（）

  A . O IA B . O E1 C . O E2 D . O

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• Which statements describe the routing protocol OSPF?（）

  A . It supports VLSM. B . It is used to route between autonomous systems. C . It confines network instability to one area of the network. D . It increases routing overhead on the network. E . It allows extensive control of routing updates. F . It is simpler to configure than RIP v2.

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• Which of the following LSA types describe information related to topology or subnets useful for calculating routes for subnets inside the OSPF domain?（）https://assets.asklib.com/images/image2/2018073114202690751.png

  A . 1 B . 2 C . 3 D . 4 E . 5 F . 7

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• Refer to the exhibit. Examine the partial configuration and the routing table excerpt. Which routes would be redistributed into OSPF area 1?（）https://assets.asklib.com/images/image2/2018073016410242942.jpg

  A . 10.10.10.16/28 only B . 10.10.10.16/28 and 10.10.10.64/26 C . 10.10.10.16/28, 10.10.10.64/26, and 172.16.10.0/24 D . 10.10.10.64/26 only

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• Which IOS command would you use to find out which networks are routed by a particular OSPF process（）

  A . show ip ospf B . show ip route C . show ip protocols D . show ip ospf database E . None of the other alternatives apply

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• Which two are NOT characteristics of the OSPF routing protocol?（）

  A . It confines network instability to a single area of network. B . It increases the routing overhead of the network C . It supports VLSM D . It routes between Autonomous Systems. E . It allows extensive control of routing update

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• Which statements describe the routing protocol OSPF？（）

  A .  It supports VLSM. B .  It is used to route between autonomous systems. C .  It confines network instability to one area of the network. D .  It increases routing overhead on the network. E .  It allows extensive control of routing updates. F .  It is simpler to configure than RIP v2.

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• Your network has a mixture of Fast Ethernet and Gigabit Ethernet links. What needs t o be done to ensure optimal data routing when using OSPF?（）

  A . Nothing. OSPF will determine the most optimal path for routing data by default. B . Adjust the hello and dead timers for more rapid detection of link failures. C . Increase the reference - bandw idth used to calculate the interface default metrics, on all routers in your network. D . Set the priority values on every broadcast interface to ensure that the designated and backup designated routers are the routers with the most processor and memory resources.

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• Which command should you use to verify what networks are being routed by a given OSPF process（）

  A . show ip ospf B . show ip route C . show ip protocol D . show ip ospfdatabase E . None of the other alternatives apply

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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 of the following data structures exist on a router for the OSPF routing protocol？（）

  A . OSPF topology table B . OSPF interface table C . OSPF routing information base D . OSPF link-state database E . OSPF adjacency table F . OSPF neighbor table

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• A router learns about a remote network from EIGRP, OSPF, and a static route. Assuming all routing protocols are using their default administrative distance, which route will the router use to forward data to the remote network?（）

  A . The router will use the static route. B . The router will use the OSPF route. C . The router will use the EIGRP route. D . The router will load balance and use all three routes.

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• Which two features prevent routing loops between the OSPF sites of a customer when the sites aremultihomed or a backdoor link is used between the sites？ （）

  A . sham link B . down bit C . virtual link D . Site of Origin E . domain tag

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• Process OSPF 1 is redistributing routes from process OSPF 2. Which of the following methods may be used to set the metrics of the redistributed routes?（）

  A . Let the metrics default. B . Use each redistributed route's OSPF metric using the redistribute command's metric transparent keywords. C . Set the metric using the default - metric router subcommand. D . Redistribution is not allowed between two OSPF p rocesses.

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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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