When a BGP speaker receives multiple routes to the same prefix from different peers, which step occurs FIRST in the BGP route selection process?

Compare the local preference values and prefer the highest.

Discard routes that are not synchronized with the IGP.

Select the route with the shortest AS path.

Discard routes with a next hop that is not resolvable.

A service provider receives two routes to the same prefix from two different peers. Route A has a local preference of 150 and an AS path length of 3. Route B has a local preference of 120 and an AS path length of 2. Which route will the router prefer, and why?

Route B, because it was received from a peer rather than an internal source

Route A, because local preference is evaluated before AS path length

Route A, because it has a higher local preference and longer AS path

Route B, because a shorter AS path is always preferred

What does a BGP router do when it receives a route with a next-hop address that is not directly connected and not resolvable via an IGP route?

It discards the route and does not install it in the routing table.

It sends an ICMP redirect to the peer to correct the next hop.

It installs the route in the routing table with the next hop marked as unreachable.

It uses the source address of the BGP update as the next hop.

Juniper NetworksCertified Professional, Service Provider Routing and Switching (JNCIP-SP)

Domain 3Objective 1

BGP Fundamentals and Path Selection JN0-664 Practice Questions (Page 2)

Part of the BGP domain, which makes up ~6% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~2–4 in this domain), expect 1–1 from this objective — we provide 13 practice questions to prepare you well beyond it. (estimate)

13questions here

3free pages

5concepts

Questions 6–10

6foundation · easy
When a BGP speaker receives multiple routes to the same prefix from different peers, which step occurs FIRST in the BGP route selection process?
Select an answer first
7application · medium
A service provider receives two routes to the same prefix from two different peers. Route A has a local preference of 150 and an AS path length of 3. Route B has a local preference of 120 and an AS path length of 2. Which route will the router prefer, and why?
Select an answer first
8foundation · easy
Which BGP attribute is considered well-known mandatory and is used to detect routing loops?
Select an answer first
9foundation · easy
What does a BGP router do when it receives a route with a next-hop address that is not directly connected and not resolvable via an IGP route?
Select an answer first
10foundation · easy
In a Junos routing policy, which regular expression matches an AS path that contains exactly one AS number?
Select an answer first

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BGP Fundamentals and Path Selection JN0-664 Practice Questions (Page 2)

Questions 6–10

When a BGP speaker receives multiple routes to the same prefix from different peers, which step occurs FIRST in the BGP route selection process?

A service provider receives two routes to the same prefix from two different peers. Route A has a local preference of 150 and an AS path length of 3. Route B has a local preference of 120 and an AS path length of 2. Which route will the router prefer, and why?

Which BGP attribute is considered well-known mandatory and is used to detect routing loops?

What does a BGP router do when it receives a route with a next-hop address that is not directly connected and not resolvable via an IGP route?

In a Junos routing policy, which regular expression matches an AS path that contains exactly one AS number?

Keep studying — BGP