BGP Fundamentals for Services Practice Questions & Answers • ExamPrepare

23 questions in this view

Page 1 of 4

Question 1

Which of the following statements about the Originator-ID BGP attribute is FALSE?

Once set, the Originator-ID attribute is not modified.
A router that receives a route with its is own Router-ID as Originator-ID, ignores this route.
The Originator-ID attribute is used to prevent route advertisement loops.
The first router that originates the route sets the Originator-ID to its own Router-ID.

Select an answer above, then submit your vote. Reading or practicing does not cast a vote.

Which of the following statements about router reflectors is FALSE?

A full iBGP mesh is required among route reflectors.
A route reflector can have both iBGP and eBGP clients.
A router reflector disables the iBGP split-horizon rule for its clients.
Route reflectors are used to reduce the number of iBGP sessions required in an AS.

Select an answer above, then submit your vote. Reading or practicing does not cast a vote.

Which of the following statements about labeled IP prefix is TRUE?

It is an IP prefix advertisement carried with an associated MPLS label.
It is an IP packet tagged with an associated MPLS label.
It is advertised by either LDP or RSVP.
VPN-IPv4 or VPN-IPv6 address family needs to be configured to support labeled IP prefix.

Select an answer above, then submit your vote. Reading or practicing does not cast a vote.

How does the advertisement of MP-BGP labeled IP prefixes improve the scalability of VPN control-plane signaling?

They carry VPN-related information across regions, so there is no need to store per-VPN information on intermediate routers.
They help signal end-to-end inter-region transport tunnels, so there is no need to do per-VPN configuration on intermediate routers.
They help signal the intra-region transport tunnels, so LDP and RSVP are no longer needed.
They carry both transport and service labels, so only one MP-BGP address family is needed on the PE routers.

Select an answer above, then submit your vote. Reading or practicing does not cast a vote.

Which of the following statements about the service label used in a traditional (non EVPN) VPRN service is FALSE?

This label is carried in an MP-BGP VPN-IPv4 route update.
This label is pushed on user data packets exchanged between customer sites.
This label is dynamically allocated.
This label is used to identify which of the received routes are relevant to the VPRN.

Select an answer above, then submit your vote. Reading or practicing does not cast a vote.

Which of the following statements about the Route Distinguishers (RD) is TRUE?

The RD is an extended community that is carried in the MP-BGP route updates.
PE routers use the RD carried in each incoming MP-BGP route update to identify the VPRN service to which the route is relevant.
The received IP prefixes, concatenated with the RD, are stored in the VPRN's routing table.
The RD is only visible in MP-BGP control-plane updates and never appears in the data-plane packets.

Select an answer above, then submit your vote. Reading or practicing does not cast a vote.