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Which of the following best describes the type of packets used by OSPF routers to exchange updates on a point-to-point link?
Suggested Answer: A
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32 comments · newest first
CA
Candida
6 months ago
Trust me, A is the standard. Multicast is key for OSPF.
RA
Raylene
6 months ago
I feel confused. Why not B or D? They sound plausible too.
EL
Elke
7 months ago
But OSPF is designed for multicast! A is definitely right.
ER
Ernestine
7 months ago
I’m leaning towards C. Unicast seems more reliable.
DO
Dolores
7 months ago
I agree, A makes sense. Multicast is efficient.
CR
Crissy
7 months ago
I think it's A. OSPF uses multicast for updates.
NO
Noel
7 months ago
TCP isn't used for OSPF, so A is the only choice!
ER
Ernest
8 months ago
Wait, are we sure it's multicast? Seems off.
BA
Barrett
8 months ago
I thought it was unicast, but A makes sense.
TW
Twana
8 months ago
Definitely A, multicast is the way to go!
AI
Aide
8 months ago
I bet the OSPF developers were just winging it when they decided on the packet type. Multicast or unicast, who knows?
NI
Nickolas
9 months ago
Haha, OSPF must be using carrier pigeons to exchange updates. No packets involved at all!
MO
Mozell
9 months ago
B) TCP packets sent to an IP multicast address. Wait, why would OSPF use TCP? That doesn't sound right.
GE
German
9 months ago
I'm a bit lost on this one. Is it TCP packets or UDP packets that OSPF uses? I can't quite remember the details. Guess I'll have to make an educated guess on this one.
MI
Milly
9 months ago
I'm pretty confident it's A. OSPF uses IP multicast addresses like 224.0.0.5 and 224.0.0.6 to send its update packets. The other options just don't seem right for OSPF's operation.
CO
Corrina
9 months ago
Okay, let me walk through this step-by-step. OSPF is a link-state routing protocol, so the routers need to exchange topology updates. And they do that over a point-to-point link, which means unicast is not used. So I think the answer is A or D - multicast packets, either IP or UDP.
CA
Carla
9 months ago
Hmm, I'm a bit unsure on this one. I know OSPF uses multicast, but I can't remember if it's IP or UDP packets. I'll have to think this through carefully.
HI
Hillary
10 months ago
I’m leaning towards option A, but I’m a bit confused about the specifics of multicast versus unicast in this context.
AD
Adrianna
10 months ago
I feel like it might be IP packets, but I can't recall if they go to a multicast or unicast address.
LA
Lazaro
10 months ago
I'm pretty sure it's A - IP packets sent to a multicast address. That's how OSPF routers communicate updates, right?
LA
Lai
10 months ago
D) UDP packets sent to an IP multicast address. Hmm, I thought OSPF used UDP, but I could be wrong.
SH
Sharika
10 months ago
A) IP packets sent to an IP multicast address. I'm pretty sure that's how OSPF routers communicate.
WI
Wilda
11 months ago
OSPF uses IP packets for updates.
AR
Armando
11 months ago
C) IP packets sent to an IP unicast address. That's the correct answer, OSPF uses IP packets for its updates.
TE
Teddy
4 months ago
Good to see we're all on the same page!
SH
Sheridan
5 months ago
OSPF needs reliable updates, unicast is the way to go.
QU
Quentin
6 months ago
Exactly! Multicast wouldn't work here.
JO
Joni
6 months ago
Unicast makes sense for point-to-point links.
ST
Stephaine
6 months ago
OSPF is all about those IP packets!
RE
Regenia
6 months ago
I agree, C is definitely the right choice.
FE
Felicia
11 months ago
I remember practicing a similar question where we discussed OSPF packet types. I think it's definitely not TCP.
OL
Oliva
11 months ago
I think OSPF uses multicast for sending updates, but I'm not sure if it's IP or TCP packets.