Juniper JN0-105 Exam - Topic 7 Question 42 Discussion

Actual exam question for Juniper's JN0-105 exam

Question #: 42
Topic #: 7

[All JN0-105 Questions]

What are two link-state routing protocols? (Choose two.)

ARIP

BBGP

COSPF

DIS-IS

Show Suggested Answer

Suggested Answer: C, D

Link-state routing protocols are a type of routing protocol used in packet-switching networks for finding the best path between source and destination. OSPF (Open Shortest Path First) and IS-IS (Intermediate System to Intermediate System) are both examples of link-state routing protocols. They work by maintaining a complete map or topology of the network, allowing routers to independently calculate the best path to each destination. Unlike distance-vector protocols like RIP, link-state protocols are more efficient and scalable, making them suitable for larger networks.

by Brandee at Nov 25, 2025, 05:36 AM

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Pamella

2 days ago

OSPF and IS-IS are both used in large networks.

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Meaghan

7 days ago

I’m torn between BGP and OSPF.

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Merri

12 days ago

OSPF is definitely a link-state protocol.

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Stephaine

17 days ago

Yeah, I agree! BGP is more of a path vector protocol.

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Valentine

22 days ago

I thought IS-IS was outdated, but I guess it's still relevant?

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Kent

27 days ago

Wait, isn't BGP also a routing protocol?

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Eloisa

2 months ago

Totally agree, those are the right ones!

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Catherin

2 months ago

I heard OSPF stands for "Ostriches Strutting Proudly Forever."

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Leonor

2 months ago

Ah, the age-old battle between link-state and distance-vector protocols. May the best routing algorithm win!

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Francesco

2 months ago

I'm pretty sure OSPF is the one with the cute little osprey mascot.

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Tiera

2 months ago

C and D are the correct answers. RIP and BGP are not link-state protocols.

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Shelba

2 months ago

OSPF and IS-IS are the two link-state routing protocols.

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Harrison

3 months ago

I practiced a question like this before, and I think OSPF and IS-IS were the correct choices.

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Justa

3 months ago

I keep mixing up BGP and RIP; I know BGP is more about path vector, but I can't recall if RIP is link-state or distance-vector.

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Shaquana

3 months ago

I remember studying IS-IS as a link-state protocol, so I think C and D are the right answers.

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Chu

3 months ago

I think OSPF is definitely one of the link-state protocols, but I'm not sure about the second one.

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Queen

3 months ago

Ah yes, OSPF and IS-IS, those are the two link-state routing protocols. I'm feeling good about this one.

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Alayna

3 months ago

This is a straightforward question, just need to recall the key link-state routing protocols. OSPF and IS-IS, got it!

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Carissa

4 months ago

I remember learning about link-state routing in class, but I'm drawing a blank on the specific protocol names. I'll have to think this one through carefully.

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Loise

4 months ago

OSPF and IS-IS are link-state protocols.

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Lindsey

4 months ago

I think OSPF and IS-IS are the right answers.

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Helene

4 months ago

RIP is distance-vector, not link-state.

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Cecilia

5 months ago

Okay, let me think this through. I know RIP and BGP are distance-vector protocols, so those are definitely not the right answers. I'm pretty confident OSPF and IS-IS are the link-state ones.

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Bettyann

5 months ago

Hmm, I think OSPF and IS-IS are the link-state routing protocols, but I'm not 100% sure.

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Roxane

4 months ago

I agree, OSPF and IS-IS sound right.

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