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In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. How many type 4 LSAs will be present in the network?
Suggested Answer: C
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26 comments · newest first
AL
Aliza
11 months ago
Nah, type 4 LSAs aren't generated here.
YO
Yolande
11 months ago
Definitely one for each router in area 0!
GR
Gregoria
11 months ago
Wait, are you sure about that? Seems off.
EL
Elden
11 months ago
I think it's one for each external route exported.
RO
Roosevelt
12 months ago
Type 4 LSAs are for ASBRs, right?
FR
Francoise
12 months ago
I vaguely recall that type 4 LSAs might not be generated in some topologies, but I can't remember the details.
TW
Twana
1 year ago
I practiced a similar question where the number of LSAs depended on the external routes, so I’m leaning towards option C.
KI
Kiley
1 year ago
I think there might be one type 4 LSA for each router in area 0, but I need to double-check that concept.
GA
Gabriele
1 year ago
I remember studying that type 4 LSAs are used to advertise ASBRs, but I'm not sure how many would be in this specific case.
BE
Bernadine
1 year ago
Alright, I've got a strategy for this. I'll start by identifying the ASBR and then consider the number of external routes it's advertising. That should point me to the right answer.
SH
Shelia
1 year ago
I've seen questions like this before. I think the answer is going to depend on how many external routes R1 is exporting. Let me review the options carefully.
BA
Basilia
1 year ago
I'm a bit confused on this one. The topology seems straightforward, but I'm not sure how to determine the number of type 4 LSAs. Guess I'll have to think it through step-by-step.
RO
Rossana
1 year ago
Okay, let's see here. The key information seems to be that R1 is an ASBR exporting external routes. I think the answer might be related to that.
AL
Alba
1 year ago
Hmm, this looks like a tricky OSPF question. I'll need to carefully review the topology and think through the type 4 LSA generation rules.
CH
Cherri
1 year ago
I bet the answer is B. One type 4 LSA for each router in area 0. That's like, the most complicated option, so it's gotta be right.
LO
Lore
1 year ago
I agree with you, B seems like the most complicated option so it must be right.
KA
Kayleigh
1 year ago
Let's go with C. One for each of the external routes exported by router R1.
JA
Janna
1 year ago
I agree with you, I also think it's B. One for each of the routers in area 0.
HA
Haydee
1 year ago
I'm going with D. Type 4 LSAs are not generated in this network topology.
MA
Man
1 year ago
I'm not sure, but I believe it's D. Type 4 LSAs are not generated in this network topology.
TO
Tony
1 year ago
I think the answer is C. One for each of the external routes exported by router R1.
RE
Renay
1 year ago
I think the answer is actually C. One for each of the external routes exported by router R1.
NI
Nickolas
1 year ago
Eve
RY
Ryann
2 years ago
But router R1 is an ASBR, so it should only generate one type 4 LSA for each external route it exports.
AL
Alesia
2 years ago
I disagree, I believe the answer is B.
RY
Ryann
2 years ago
I think the answer is C.