Discuss Ericsson ECP-206 Exam Topic 3 Question 57

Which statement accurately defines an Autonomous System (AS)?

AAn AS is a set of routers under a single administration, using an interior gateway protocol and common metrics to route packets within the AS.

BAn AS is a group of networks directly connected to each other that can distribute eBGP information using directly established links.

CAn AS is a network that is capable of autonomously forwarding packets, regardless of direct or indirect connectivity to the Internet.

DAn AS is a collection of IS-IS routes imported into BGP and presented in such a way that networks connected to the AS have a global overview of the network.

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 .

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17 comments · newest first

Tyra 23 days ago

I feel A captures the essence of an AS perfectly.

Domingo 28 days ago

B is good, but I think A is more comprehensive.

Odelia 1 month ago

A covers the essential aspects of an AS well.

Ryan 1 month ago

D seems too specific. I prefer A for clarity.

Van 1 month ago

C is interesting too, but it feels too broad for me.

Gracia 2 months ago

A is straightforward, but B highlights the direct connections.

Aileen 2 months ago

I disagree, B makes more sense. It focuses on eBGP connections.

Nichelle 2 months ago

I think A is the best choice. It clearly defines the role of routers.

Herman 2 months ago

A) is definitely the most widely accepted definition.

Shoshana 2 months ago

Wait, D) is a thing? I didn't know that!

Ling 2 months ago

C) sounds a bit off, isn't it too broad?

Tran 3 months ago

I disagree, B) is more accurate for how eBGP works.

Florinda 3 months ago

A) is spot on! That's the classic definition.

Donte 3 months ago

Option C seems off to me; I don't recall an AS being defined by its ability to forward packets without connectivity.

Pansy 3 months ago

I practiced a similar question, and I remember that an AS is about routing within a network, so maybe A is the best choice?

Micah 3 months ago

I'm not entirely sure, but I feel like option B could be correct too since it talks about eBGP and direct connections.

Eden 4 months ago

I think option A sounds right because it mentions routers under a single administration, which is how I remember AS is defined.

Ericsson ECP-206 Exam - Topic 3 Question 57 Discussion