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QID: AN110 - lodgeg - 06-18-2020
(QID:AN110) Refer to the exhibit. A router received five routes from different routing information sources. Which two routes does the router install in its routing table? (Choose two)
Exhibit - How2Pass.com
-----------------------------
iBGP route 10.0.0.0/30
RIP route 10.0.0.0/30
OSPF route 10.0.0.0/16
OSPF route 10.0.0.0/30
EIGRP route 10.0.0.1/32
How2Pass Answers:
OSPF route 10.0.0.0/16
EIGRP route 10.0.0.1/32
Shouldn't the correct answers be EIGRP 10.0.0.1/32 and OSPF route 10.0.0.0/30 due to the longest prefix rule?
RE: QID: AN110 - lodgeg - 06-24-2020
FYI got this question on the Exam....Would be nice to verify correct answer, anyone?
RE: QID: AN110 - jmolnar2210 - 06-25-2020
(06-24-2020, 04:21 PM)lodgeg Wrote: FYI got this question on the Exam....Would be nice to verify correct answer, anyone?Do you know if you got the answer right or wrong?
RE: QID: AN110 - lodgeg - 06-29-2020
jmolnar,
I do not know if I got the question correct or not. Cisco does not tell you which questions you missed just percentage of areas tested.
I selected: OSPF route 10.0.0.0/16 and EIGRP route 10.0.0.1/32 which is H2P's correct answers.
Would like further explanation from H2P as to why they feel OSPF route 10.0.0.0/16 is a correct answer as opposed to OSPF route 10.0.0.0/30?
RE: QID: AN110 - triple777 - 07-11-2020
(06-24-2020, 04:21 PM)lodgeg Wrote: FYI got this question on the Exam....Would be nice to verify correct answer, anyone?Did you pass the exam?
RE: QID: AN110 - nivaccounts - 10-19-2020
(06-18-2020, 11:23 PM)lodgeg Wrote: (QID:AN110) Refer to the exhibit. A router received five routes from different routing information sources. Which two routes does the router install in its routing table? (Choose two)
Exhibit - How2Pass.com
-----------------------------
iBGP route 10.0.0.0/30
RIP route 10.0.0.0/30
OSPF route 10.0.0.0/16
OSPF route 10.0.0.0/30
EIGRP route 10.0.0.1/32
How2Pass Answers:
OSPF route 10.0.0.0/16
EIGRP route 10.0.0.1/32
Shouldn't the correct answers be EIGRP 10.0.0.1/32 and OSPF route 10.0.0.0/30 due to the longest prefix rule?
I believe that the answer How2Pass chose is predicated on having the /16 route and the /30 routes pointing to the same next hop destination. If that were the case then the /16 route would efficiently summarize those four routes. This is an ambiguity not addressed in the question, however if there are only 2 correct answers this would be the only case that makes sense.
If the /16 and /30 routes pointed to different next hop destinations, then the router would install three routes in its routing table, which would be OSPF route 10.0.0.0/16, EIGRP route 10.0.0.1/32, and one of the /30 routes depending on the next hop destination(s). If you were to just compare the /30s without any other information present, OSPF has the lowest AD value.
The wording that the routes came from "different routing information sources" definitely makes this confusing and I was similarly frustrated. Based on the information present in the question I would chose H2P's answer on the test, but if someone were to provide a more definitive answer I would be grateful.
RE: QID: AN110 - calgary - 12-25-2020
I have the same question related to AN110, in that I would have selected the OSPF 10.0.0.0/30 over OSPF 10.0.0.0/16 due to a /30 having the longer matching prefix. I hope How2Pass can further clarify the question and the explanation for us ?