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23 Cards in this Set
- Front
- Back
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Why do OSPF serial interfaces usually require manual bandwidth configuration?
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* OSPF uses the bandwidth value to compute routes for its routing table.
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Which statement describes a multiarea OSPF network?
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* It has a core backbone area with other areas connected to the backbone area.
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What is one advantage of using multiarea OSPF?
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* It improves the routing efficiency by reducing the routing table and link-state update overhead.
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Which characteristic describes both ABRs and ASBRs that are implemented in a multiarea OSPF network?
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* They are required to perform any summarization or redistribution tasks.
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What is used to facilitate hierarchical routing in OSPF?
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* the use of multiple areas
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Which two statements correctly describe OSPF type 3 LSAs? (Choose two.)
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* Type 3 LSAs are generated without requiring a full SPF calculation.
* Type 3 LSAs are used to update routes between OSPF areas. |
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What OSPF LSA type is used to inform routers of the router ID of the DR in each multiaccess network in an OSPF area?
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* type 2
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What type of OSPF LSA is originated by ASBR routers to advertise external routes?
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* type 5
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Refer to the exhibit. What can be concluded about network 192.168.4.0 in the R2 routing table?
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The network was learned from a router within the same area as R2
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What routing table descriptor is used to identify OSPF summary networks that originate from an ABR?
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* O IA
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Which three steps in the design and implementation of a multiarea OSPF network are considered planning steps? (Choose three.)
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* Define the OSPF parameters.
* Gather the required parameters. * Define the network requirements. |
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A network administrator is implementing OSPF in a portion of the network and must ensure that only specific routes are advertised via OSPF. Which network statement would configure the OSPF process for networks 192.168.4.0, 192.168.5.0, 192.168.6.0, and 192.168.7.0, now located in the backbone area, and inject them into the OSPF domain?
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* r1(config-router)# network 192.168.4.0 0.0.3.255 area 0
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The network administrator has been asked to summarize the routes for a new OSPF area. The networks to be summarized are 172.16.8.0, 172.16.10.0, and 172.16.12.0 with subnet masks of 255.255.255.0 for each network. Which command should the administrator use to forward the summary route for area 15 into area 0?
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* area 15 range 172.16.8.0 255.255.248.0
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Which two networks are part of the summary route 192.168.32.0/22? (Choose two.)
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* 192.168.33.0/24
* 192.168.35.0/24 |
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Where can interarea route summarization be performed in an OSPF network?
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* ABR
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Refer to the exhibit. After attempting to enter the configuration that is shown in router RTA, an administrator receives an error and users on VLAN 20 report that they are unable to reach users on VLAN 30. What is causing the problem?
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* RTA is using the same subnet for VLAN 20 and VLAN 30.
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Refer to the exhibit. A network administrator has been asked to summarize the networks shown in the exhibit as part of a multiarea OSPF implementation. All addresses are using a subnet mask of 255.255.255.0. What is the correct summarization for these eight networks?
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* 10.0.0.0 255.255.240.0
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Refer to the exhibit. Which two statements are correct? (Choose two.
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* The routing table contains routes from multiple areas.
* To reach network 192.168.1.0, traffic will exit via the Serial0/0/0 interface. |
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Which command can be used to verify the contents of the LSDB in an OSPF area?
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* show ip ospf database
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Refer to the exhibit. Fill in the blank. Do not use abbreviations.The __________ command must be issued to configure R1 for multiarea OSPF.
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network 192.168.10.128 0.0.0.127 area 1
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MATCHING |
backbone router SKIP internal router autonomous system area border |
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Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.What is preventing users who are connected to router R2 from accessing resources located either within the network 192.168.1.0 or the internet?
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* The router R2 is not receiving any updates from either router R1 or R3.
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Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.Fill in the blank. Do not use abbreviations.What is the missing command on router R2 to establish an adjacency between routers R1 and R3?
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* network 172.16.10.0 0.0.0.255 area 0
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