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Exam 300-410 topic 1 question 276 discussion

Actual exam question from Cisco's 300-410
Question #: 276
Topic #: 1
[All 300-410 Questions]

An engineer must override the normal routing behavior of a router for Telnet traffic that is destined to 10.10.10.10 from 10.10.1.0/24 via a next hop of 10.4.4.4, which is directly connected to 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 deny tcp 10.10.1.0 0.0.0.255 host 10.10.10.10 eq 23 ! route-map POLICY permit 10 match ip address 100 set ip next-hop 10.4.4.4 route-map POLICY permit 20
  • B. access-list 100 permit tcp 10.10.1.0 0.0.0.255 host 10.10.10.10 eq 23 ! route-map POLICY permit 10 match ip address 100 set ip next-hop 10.4.4.4 route-map POLICY permit 20
  • C. access-list 100 permit tcp 10.10.1.0 0.0.0.255 host 10.10.10.10 eq 23 ! route-map POLICY permit 10 match ip address 100 set ip next-hop recursive 10.4.4.4 route-map POLICY permit 20
  • D. access-list 100 permit tcp 10.10.1.0 0.0.0.255 host 10.10.10.10 eq 23 ! route-map POLICY permit 10 match ip address 100 set ip next-hop recursive 10.4.4.4
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️

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VergilP
Highly Voted 2 years, 8 months ago
Selected Answer: B
no need to config recursive ---- The recursive next-hop IP address is installed in the routing table and can be a subnet that is not directly connected. If the recursive next-hop IP address is not available, packets are routed using a default route. --- https://www.cisco.com/en/US/docs/ios/iproute_pi/configuration/guide/iri_prb_rec_next_hop_external_docbase_0900e4b1810fe58b_4container_external_docbase_0900e4b181525fed.html
upvoted 19 times
Pietjeplukgeluk
1 year, 6 months ago
B = correct.. Fully agree, you do NOT need recursive option in this example. It clearly state "directly connected", it can just reach the next hop as it has an interface in the subnet where the next hop resides. Also "the Permit 20 does not harm in route map." however it is not required in this use case.
upvoted 4 times
bk989
11 months, 1 week ago
I see your point. It is directly connected to the router (our router performing PBR) connected to the 10.1.1.0/24 subnet. You may have a point and it is B.
upvoted 1 times
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Patrick1234
Highly Voted 2 years, 6 months ago
Selected Answer: D
I believe the 10.4.4.4 is not directly connected to this router, but is connected to a router behind 10.1.1.0/24 subnet. So recursive would be necessary. In that case I would go for answer D.
upvoted 15 times
Pietjeplukgeluk
1 year, 6 months ago
the question states "which is directly connected to the router", so i do not see any requirement for recursive lookups here...
upvoted 3 times
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yasinii
Most Recent 1 week, 3 days ago
Selected Answer: B
This is not a networking question, this is a english language question…
upvoted 1 times
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peerboy
2 months, 3 weeks ago
Selected Answer: B
If the next-hop address's subnet directly connected there is no need to recursive configuration
upvoted 2 times
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1chung
3 months ago
Selected Answer: B
Correct answer is B
upvoted 1 times
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Brahim90
5 months ago
Selected Answer: B
I will go with answer B because to you need permit 20 because of the deny implicit
upvoted 1 times
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test190502
10 months, 1 week ago
Selected Answer: D
The IP address 10.4.4.4 is directly connected to the router connected to the 10.1.1.0/24 subnet. The router you are configuring is on the 10.10.1.0/24 subnet, so it is a different device. Therefore, recursive is necessary. Also, since this is PBR, permit 20 is not required.
upvoted 5 times
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jabal93
11 months, 3 weeks ago
Selected Answer: D
" which is directly connected to the router that is connected to the 10.1.1.0/24 subnet." I feel (directly connected to the router) part meant to through us off, but the question is giving us clue on the part "override our normal routing behavior" for me normal behavior means next-hop connected to us already.
upvoted 1 times
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jabal93
11 months, 3 weeks ago
B is correct Recursive next-hop not needed here as the 10.1.1.0/24 is DIRECTLY CONNECTED to our PREFERED next-hop (10.4.4.4). Recursive needed if the PREFERD next-hop not connected to router with the route-map APPLIED on.
upvoted 1 times
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XBfoundX
1 year ago
is B, we are in the router that have the lan interface 10.10.1.0/24 subnet configured. The rotuer may be have multiple next hops and we have also the p2p interface 10.4.4.x subnet and 10.4.4.4 is my next hop, recursive is not needed...
upvoted 1 times
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dapardo
1 year, 1 month ago
Selected Answer: B
Im going with B on this since the question states that its directly connected to the router that is connected to 10.1.1.0 24 network. D can be used, off course, but B is sufficient.
upvoted 1 times
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Chiaretta
1 year, 3 months ago
Selected Answer: D
D is the correct answer because the next-hop is not directly connected then "recursive" is necessary and "Policy 20" is not needed.
upvoted 2 times
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Gramterre
1 year, 3 months ago
Selected Answer: B
Why are so many people voting D when then question clearly states "via a next hop of 10.4.4.4, which is DIRECTLY CONNECTED to the router" ?
upvoted 1 times
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alex711
1 year, 11 months ago
Selected Answer: D
D is correct. route-map POLICY permit 20 is not used in PBR. If you do not match packets on a route-map during PBR, PBR does not take any action on that packet, and is routed normally per the routing table/FIB/etc.
upvoted 4 times
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HarwinderSekhon
1 year, 11 months ago
Selected Answer: B
There are 4 Devices 1. LAN PC 10.10.1.X/24 -- > Router directly connected to 10.10.1.X -->Router with IP 10.4.4.4 --> destination 10.10.10.10. Just understand there are 4 nodes. 1.Client 10.10.1.X/24 2. Router connected to 10.10.1.X 3 Router we choose as next hop (10.4.4.4) 4. Destination 10.10.10.10 You are configuring node 2 and choosing node 3 as next hop. No recursive needed. Permit 20 does not harm in route map.
upvoted 3 times
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inteldarvid
2 years ago
Selected Answer: C
team for me correct is "C", because the next hop (recursive) is remote and not connect directly and its necessary continue route map with seq "20", because block or deny rest traffic
upvoted 2 times
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Almylle
2 years, 1 month ago
Selected Answer: D
For me D is the correct answer, because in this case u need the recursive command, the 10.4.4.4 is NOT directly connected to the router.
upvoted 2 times
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