Free Nokia Border Gateway Protocol Fundamentals for Services Exam 4A0-114 Exam Practice Test

Which of the following statements about VXLAN encapsulation is TRUE?

• It uses an MPLS label to identify the transport tunnel and a VXLAN Network ID (VNI) to identify the service tunnel.
• It uses a VXLAN Network ID (VNI) to identify the transport tunnel and an MPLS label to identify the service tunnel.
• It uses an additional IP header to identify the transport tunnel and a VXLAN Network ID (VNI) to identify the service tunnel.
• It uses VXLAN Network ID (VNI) to identify the transport tunnel and an additional IP header to identify the service tunnel.

Which of the following regarding route reflectors is TRUE?

• Only the route reflector is configured with a cluster id.
• There can only be one route reflector in a cluster.
• Clients should have iBGP sessions with each other to maintain the mesh.
• There can only be one level of route reflectors in the topology.

Which of the following statements about BGP is FALSE?

• BGP uses Hello messages to dynamically discover BGP peers.
• To establish a BGP session, a TCP session must first be established between the two routers.
• BGP uses the OPEN message to exchange capability parameters between routers.
• BGP was originally designed as an exterior routing protocol.

Which of the following regarding BGP Path Identifier is FALSE?

• Path-ID is a four-octet identifier pre-pended to the NLRI field of a BGP update.
• Path-ID is an optional transitive attribute used to advertise multiple paths.
• Path-ID uniquely identifies each path advertised to a neighbor.
• A BGP speaker that re-advertises a route must generate its own Path-ID.

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.

A router in AS 65100 receives three routes for 138.120.0.0/16. The first route has an AS Path of 65200 65400 65300 and a local preference of 150. The second route has an AS Path of 65200 65300 and a local preference of 100. The third route has an AS Path of 65600 65300 and a local preference of 100. Which route will appear in the RIB-out?

• Only the first route will appear in the RIB-Out.
• Only the second route will appear in the RIB-Out.
• Only the third route will appear in the RIB-Out.
• All routes will appear in the RIB-Out.

Which of the following route reflection rules is NOT followed by a route reflector?

• If the best route is received from an eBGP peer, propagate to all iBGP peers.
• If the best route is received from an eBGP peer, propagate to all eBGP peers.
• If the best route is received from a client, propagate to all iBGP peers.
• If the best route is received from a client, do not propagate to eBGP peers.

Which of the following is considered a best practice for BGP address planning?

• Advertising external networks into IGP.
• Using system addresses for setting up iBGP sessions.
• Exporting the networks associated with the external links of eBGP peers into BGP.
• Optimizing BGP route table by exporting IGP routes into BGP.

Which of the following pieces of information is NOT carried inside an EVPN IP-Prefix (type 5) route update associated with an EVPN VPLS?

• The MAC address of an attached host.
• The IP prefix of a subnet in the layer-3 domain that the VPLS belongs to.
• The VPLS's route-distinguisher and route-target values.
• The VPLS's service tunnel ID (MPLS label or VNI value).

An autonomous system has 7 routers configured with BGP. How many iBGP sessions are required for a fully meshed configuration?

• 7
• 13
• 21
• 42