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Exam 300-410 topic 1 question 454 discussion

Actual exam question from Cisco's 300-410

Question #: 454
Topic #: 1

An engineer must override the normal routing behavior of a router. The engineer must send HTTP traffic that is destined to 10.100.100.100 from 10.1.1.0/24 via a next hop of 10.2.2.2, two hops away from the router that is connected to the 10.1.1.0/24 subnet. Which configuration reroutes traffic according to this requirement?

A. access-list 100 permit tcp 10.1.1.0 0.0.0.255 host 10.100.100.100 eq http
!
route-map POLICY permit 10
match ip address 100
set ip next-hop recursive 10.2.2.2
B. access-list 100 permit tcp 10.1.1.0 0.0.0.255 host 10.100.100.100 eq http
!
route-map POLICY deny 10
match ip address 100
set ip next-hop recursive 10.2.2.2
route-map POLICY permit 20
C. access-list 100 permit tcp 10.1.1.0 0.0.0.255 host 10.100.100.100 eq http
!
route-map POLICY permit 10
match ip address 100
set ip next-hop 10.2.2.2
route-map POLICY permit 20
D.
access-list 100 permit tcp 10.1.1.0 0.0.0.255 host 10.100.100.100 eq http
!
route-map POLICY permit 10
match ip address 100
set ip next-hop 10.2.2.2

Show Suggested Answer

Suggested Answer: A 🗳️

by inteldarvid at July 20, 2023, 2:23 p.m.

Comments

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Not_That_Guy

Highly Voted 1 year, 5 months ago

'route-map POLICY permit 20' is not required here because the route map is not referenced anywhere else, it's only used to modify the next-hop on specific packets. Recursive is required because the other router is "two hops away".

upvoted 6 times

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Tim303

Highly Voted 1 year, 3 months ago

its 2 hops away then we have to use "recursive"

upvoted 5 times

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[Removed]

Most Recent 11 months ago

Selected Answer: A

A is correct

upvoted 1 times

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inteldarvid

1 year, 11 months ago

Selected Answer: A

yes, correct "A". But also its necesary permit route map seq 20. :)

upvoted 3 times

[Removed]

1 year, 6 months ago

I believe route maps for PBR do not require a permit statement

upvoted 3 times

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Brand

1 year, 10 months ago

What you're describing is the answer B. Is it B then?

upvoted 1 times

Brand

1 year, 10 months ago

Sorry, B is denying the HTTP traffic in Seq 10. It should be "A"

upvoted 2 times

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bk989

1 year, 4 months ago

They are leaving the part out about attaching the route map to an inteerface in answer A. When you do attach it to an interface this is called Policy based routing, and there is no implicit deny for the route map in this scenario

upvoted 1 times

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[Removed]

1 year, 10 months ago

Correct, otherwise all other traffic is blackholed

upvoted 1 times

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