READ Free Dumps For Cisco- 300-101
| Question ID 18391 | Refer to the exhibit.
R1 and R2 belong to the RIP routing domain that includes the networks 10.20.0.0/16 and
10.21.0.0/16. R3 and R4 are performing two-way route redistribution between OSPF and
RIP. A network administrator has discovered that R2 is receiving OSPF routes for the
networks 10.20.0.0/16 and 10.21.0.0/16 and a routing loop has occurred.
Which action will correct this problem?
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| Option A | Apply an inbound ACL to the R2 serial interface.
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| Option B | Change the RIP administrative distance on R3 to 110.
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| Option C | Configure distribute-lists on R3 and R4.
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| Option D | Set the OSPF default metric to 20.
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| Option E | Change the OSPF administrative distance on R3 to 110.
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| Correct Answer | C |
Explanation Explanation: Distribute List is Like an access-list, use to deny or permit the routing update to pass through a router/interface. Distribute List allow you apply an access list to a routing updates. It can be apply on in or out bond of an interface under a routing process. e.g in fig. R1 want to send a routing update to it neighbor, this update will go through from interface S0/0, router will check, is there some Distribute List apply to this interface. If there is a Distribute List which would contain the allow route to pass through this interface.
| Question ID 18392 | Study this exhibit below carefully.
What is the effect of the distribute-list command in the R1 configuration?
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| Option A | R1 will permit only the 10.0.0.0/24 route in the R2 RIP updates
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| Option B | R1 will not filter any routes because there is no exact prefix match
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| Option C | R1 will filter the 10.1.0.0/24 and the 172.24.1.0/24 routes from the R2 RIP updates
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| Option D | R1 will filter only the 172.24.1.0/24 route from the R2 RIP updates
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| Correct Answer | C |
Explanation Explanation: The command distribute-list 10 in Serial0 will create an incoming distribute list for interface serial 0 and refers to access list 10. So it will permit routing updates from 10.0.x.x network while other entries (in this case the 10.1.0.0/24 and 172.24.1.0/24 networks) will be filtered out from the routing update received on interface S0.