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Exam 200-301 topic 1 question 470 discussion

Actual exam question from Cisco's 200-301
Question #: 470
Topic #: 1
[All 200-301 Questions]


Refer to the exhibit. Which configuration allows routers R14 and R86 to form an OSPFv2 adjacency while acting as a central point for exchanging OSPF information between routers?

  • A. R14# interface FastEthernet0/0 ip address 10.73.65.65 255.255.255.252 ip ospf network broadcast ip ospf priority 0 ip mtu 1400 router ospf 10 router-id 10.10.1.14 network 10.10.1.14 0.0.0.0 area0 network 10.73.65.64 0.0.0.3 area0 R86# interface Loopback0 ip address 10.10.1.86 255.255.255.255 interface FastEthernet0/0 ip address 10.73.65.66 255.255.255.252 ip ospf network broadcast ip mtu 1500 router ospf 10 router-id 10.10.1.86 network 10.10.1.86 0.0.0.0 area 0 network 10.73.65.64 0.0.0.3 area 0
  • B. R14# interface Loopback0 ip ospf 10 area 0 interface FastEthernet0/0 ip address 10.73.65.65 255.255.255.252 ip ospf network broadcast ip ospf 10 area 0 ip mtu 1500 router ospf 10 ip ospf priority 255 router-id 10.10.1 14 R86# interface Loopback0 ip ospf 10 area 0 interface FastEthernet0/0 ip address 10.73.65.66 255.255.255.252 ip ospf network broadcast ip ospf 10 area 0 ip mtu 1500 router ospf 10 router-id 10.10.1.86
  • C. R14# interface FastEthernet0/0 ip address 10.73.65.65 255.255.255.252 ip ospf network broadcast ip ospf priority 255 ip mtu 1500 router ospf 10 router-id 10.10.1.14 network 10.10.1.14 0.0.0.0 area0 network 10.73.65.64 0.0.0.3 area0 R86# interface FastEthernet0/0 ip address 10.73.65.66 255.255.255.252 ip ospf network broadcast ip mtu 1500 router ospf 10 router-id 10.10.1.86 network 10.10.1.86 0.0.0.0 area 0 network 10.73.65.64 0.0.0.3 area 0
  • D. R14# interface FastEthernet0/0 ip address 10.73.65.65 255.255.255.252 ip ospf network broadcast ip ospf priority 255 ip mtu 1500 router ospf 10 router-id 10.10.1.14 network 10.10.1.14 0.0.0.0 area0 network 10.73.65.64 0.0.0.3 area0 R86# interface FastEthernet0/0 ip address 10.73.65.66 255.255.255.252 ip ospf network broadcast ip mtu 1400 router ospf 10 router-id 10.10.1.86 network 10.10.1.86 0.0.0.0 area 0 network 10.73.65.64 0.0.0.3 area 0
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Suggested Answer: C 🗳️
by osuzu at Sept. 2, 2022, 3:05 p.m.

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Sutokuto
Highly Voted 2 years, 8 months ago
Anybody else just want to keep scrolling when you see answer choices like this?
upvoted 111 times
Blumen
10 months ago
Yep, skipping these... The logic behind it is solid - think on it when the time is nay.
upvoted 1 times
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elii191
1 year, 8 months ago
Yea i do, but i also want to understand a bit of it when i start working
upvoted 6 times
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Dhruv3390
Highly Voted 2 years, 4 months ago
Its C. Answer is straight forward, 1st I noticed mtu are mismatched in A and D, so we will eliminate them, in option B, Network command is missing so, C os is more appropriate.
upvoted 23 times
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ShanRamu
Most Recent 11 months, 1 week ago
The question mentions exchange (exstart) so MTU values must match.
upvoted 3 times
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[Removed]
1 year, 2 months ago
Selected Answer: C
C is correct at first look at MTU, then Area, then priority. B is wrong because the command ip ospf priority should be done in interface configuration mode and not router configuration mode.
upvoted 3 times
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BilboBagginsJr
1 year, 3 months ago
Selected Answer: C
These sorts of questions hurt my brain. Try to break them down - I focused on MTU (the MTU must match) then on the area. The only option with matching details was C.
upvoted 4 times
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elgato69
1 year, 3 months ago
So many unnecessary things you don't have to even read to answer this question.... I sincerely hope questions like this are not on the official CCNA exam as it makes me wonder why we pay so much to cisco for crap like this
upvoted 3 times
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kenkari
1 year, 4 months ago
Selected Answer: C
Only focus on the MTU, and the question answers itself.
upvoted 1 times
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sticksnfingers
1 year, 7 months ago
My god what a bunch of text just to find the differences and make the elimination method.. A nightmare.
upvoted 4 times
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shumps
1 year, 9 months ago
Quickest method is to see if the MTU match and the area, then i eliminate the wrong ones, Left with B & C, then check the syntax
upvoted 1 times
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XxxYyyZzz
1 year, 10 months ago
TL;DR—
upvoted 2 times
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tubirubs
1 year, 10 months ago
Selected Answer: C
B its wrong because: B. R14# interface Loopback0 ip ospf 10 area 0 interface FastEthernet0/0 ip address 10.73.65.65 255.255.255.252 ip ospf network broadcast ip ospf 10 area 0 ip mtu 1500 "router ospf 10 ip ospf priority 255" this line. the comand exit from interface configuration and enter in OSPF global configuration and priority comando must be aplicate in the INTERFACE configuration prompt
upvoted 2 times
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mda2h
1 year, 11 months ago
Selected Answer: C
A. and D. are wrong because MTU of miss match B. is wrong because # ip ospf priority xx should be executed in interface mode
upvoted 2 times
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PacketFapper
2 years ago
How is B incorrect?
upvoted 2 times
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dropspablo
2 years ago
Selected Answer: C
B. R14# interface Loopback0 * ip ospf 10 area 0 * interface FastEthernet0/0 * ip address 10.73.65.65 255.255.255.252 * ip ospf network broadcast * ip ospf 10 area 0 * ip mtu 1500 * router ospf 10 * ip ospf priority 255 (***WRONG***) * router-id 10.10.1 14 * R86# interface Loopback0 * ip ospf 10 area 0 * interface FastEthernet0/0 * ip address 10.73.65.66 255.255.255.252 * ip ospf network broadcast * ip ospf 10 area 0 * ip mtu 1500 * router ospf 10 * router-id 10.10.1.86
upvoted 1 times
dropspablo
2 years ago
C. RESPOSTA CERTA) C.  R14# interface FastEthernet0/0 * ip address 10.73.65.65 255.255.255.252 * ip ospf network broadcast * ip ospf priority 255 * ip mtu 1500 * router ospf 10 * router-id 10.10.1.14 * network 10.10.1.14 0.0.0.0 area0 * network 10.73.65.64 0.0.0.3 area0 * R86# interface FastEthernet0/0 * ip address 10.73.65.66 255.255.255.252 * ip ospf network broadcast * ip mtu 1500 * router ospf 10 * router-id 10.10.1.86 * network 10.10.1.86 0.0.0.0 area 0 * network 10.73.65.64 0.0.0.3 area 0
upvoted 3 times
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Drader
2 years, 2 months ago
i swear they could at least format this such that it's easier to read
upvoted 8 times
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daddydagoth
2 years, 3 months ago
Holy hell, it's C but the amount of text makes me wanna bash my head into the keyboard.
upvoted 9 times
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McNov14
2 years, 6 months ago
To set the priority of an interface, use the command ip ospf priority value, where value is 0 to 255
upvoted 2 times
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A (35%)
C (25%)
B (20%)
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