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| Question ID 18389 | Which address is used by the Unicast Reverse Path Forwarding protocol to validate a
packet against the routing table?
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| Option A | source address
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| Option B | destination address
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| Option C | router interface
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| Option D | default gateway
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| Correct Answer | A |
Explanation
| Question ID 18390 | Refer to the exhibit.
On the basis of the partial configuration, which two statements are correct? (Choose two.)
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| Option A | Only routes matching 10.0.1.0/24 will be advertised out Ethernet 0.
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| Option B | Only routes 10.0.1.0/24 will be sent out all interfaces.
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| Option C | Only routes 10.0.1.0/24 will be allowed in the routing table.
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| Option D | Only routes matching 10.0.0.0/8 will be advertised out Ethernet 0.
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| Option E | Only routes matching 10.0.0.0/8 will be advertised out interfaces other than Ethernet 0.
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| Option F | All routes will be advertised out interfaces other than Ethernet 0.
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| Correct Answer | A,E |
Explanation Explanation: Explanation In this case, the following algorithm is used when multiple distribute-lists are used: 1. First check which interface is being sent out. If it is Ethernet 0, distribute-list 2 is applied first. If the network is denied then no further checking is done for this network. But if distribute-list 2 permits that network then distribute-list 1 is also checked. If both distribute- lists allow that network then it will be sent out. 2. If the interface is not Ethernet 0 then only distribute-list 1 is applied. Now lets take some examples. + If the advertised network is 10.0.1.0/24, it will be sent out all interfaces, including Ethernet 0.+ If the advertised network is 10.0.2.0/24, it will be sent out all interfaces, excepting Ethernet 0.+ If the advertised network is 11.0.0.0/8, it will be dropped. Note: It is possible to define one interface-specific distribute-list per interface and one protocol-specific distribute-list for each process/autonomous-system. (For more information, please read: http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080208748.shtml)