Ericsson Exam ECP-206 Topic 3 Question 38 Discussion

Actual exam question for Ericsson's ECP-206 exam

Question #: 38
Topic #: 3

Which two statements are true about link-state routing protocols? (Choose two.)

AThe advertisement exchange is mainly triggered by a change in the network.

BEach router uses a reliable update mechanism to exchange topology information with its neighbors.
C Link-state routing protocols mainly use hop-counts to determine the link cost

DA distance vector algorithm is very processor intensive compared to Dijkstra's algorithm.

Show Suggested Answer

Suggested Answer: A

The statement that accurately defines an Autonomous System (AS) is that an AS is a set of routers under a single administration, using an interior gateway protocol and common metrics to route packets within the AS. An AS is a logical grouping of networks that share a common routing policy and operate under a single administrative authority. An AS can be a single network or a collection of networks that are interconnected by routers. An AS uses an interior gateway protocol (IGP), such as OSPF or IS-IS, to exchange routing information within the AS. An IGP uses common metrics, such as hop count or bandwidth, to determine the best path to each destination within the AS. An AS also has a unique number assigned by IANA, called an AS number (ASN), which identifies the AS in interdomain routing .

by Ceola at Mar 06, 2025, 11:14 PM

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William

2 months ago

Haha, hop-counts? What is this, the stone age? Link-state routing is all about that fancy Dijkstra algorithm, am I right? I bet the person who wrote this question is still using a rotary phone.

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Trinidad

16 hours ago

User 3: I agree, hop-counts are so outdated.

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Kathrine

2 days ago

User 2: Totally, it's all about that fancy algorithm for sure.

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Lashawn

8 days ago

User 1: Yeah, you're right! Link-state routing protocols use Dijkstra's algorithm.

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Olive

2 months ago

I agree with the previous responses. This question is a bit tricky, but A and B are the clear winners here. Can't believe they're trying to sneak in those other silly options!

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Toshia

2 months ago

C is definitely not correct. Link-state protocols use link metrics, not hop-counts, to determine the best path. D is also wrong - Dijkstra's algorithm is more resource-intensive than distance vector protocols.

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Alpha

1 months ago

B) Each router uses a reliable update mechanism to exchange topology information with its neighbors.

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Youlanda

1 months ago

A) The advertisement exchange is mainly triggered by a change in the network.

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Kris

2 months ago

I'm not sure about option C, but I know option D is false because Dijkstra's algorithm is less processor intensive.

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Nu

2 months ago

I think A and B are the correct answers. Link-state protocols rely on periodic updates to maintain the topology information, and they use a reliable mechanism to exchange this data with neighbors.

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Tegan

1 months ago

Yes, those are the key characteristics of link-state protocols that differentiate them from distance vector algorithms.

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Johnna

1 months ago

So, we can confirm that A and B are the correct statements about link-state routing protocols.

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Sophia

2 months ago

That's right. Link-state protocols rely on these features to maintain accurate topology information.

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Rolland

2 months ago

I agree, A and B are correct. The updates are triggered by network changes and use a reliable mechanism.

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Rene

2 months ago

I agree with Catarina. Option B is also true because routers exchange topology information reliably.

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Catarina

2 months ago

I think option A is true because link-state protocols are triggered by network changes.

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