Online Access Free 4A0-106 Exam Questions

Which of the following is a characteristic of inter-AS model C VPRN?

• A.The ASBR redistributes VPN-IPv4 updates to its ASBR eBGP peers.
• B.PE routers in different ASes exchange IPv4 routes directly between each other using eBGP.
• C.The advertising ASBR assigns a new label to the route before sending it via an MP-eBGP update to its ASBR peer.
• D.A data packet destined to a remote AS is encapsulated with three labels within the originating AS.

Which of the following statements about inter-AS model C VPRNs is FALSE?

• A.ASBRs exchange customer routes as labeled IPv4 routes.
• B.Each ASBR propagates the routes received from its neighbor ASBR as labeled IPv4 routes in its own AS.
• C.VPN-IPv4 routes are neither held, nor re-advertised, by the ASBRs.
• D.ASBRs exchange labeled IPv4 routes for the system addresses of PE routers.

Where are VPN-IPv4 addresses used in a VPRN?

• A.In customer packets as they traverse the provider core
• B.In the routing updates exchanged from P to PE
• C.In the routing updates exchanged from PE to PE
• D.In the routing updates exchanged from CE to PE
• E.In all route tables of the VPRN control plane

Which of the following about inter-AS model B VPRN is TRUE?

• A.Model B is highly scalable because the VPN-IPv4 routes are neither maintained, nor distributed by, the ASBRs.
• B.Model B supports the exchange of labeled IPv4 routes between ASBRs.
• C.There is a dependency between the route target used in different autonomous systems.
• D.Model B requires the configuration of back-to-back VRFs between the ASBRs in different autonomous systems.

Click the exhibit.

For the inter-AS model C VPRN, which of the following statements about a data packet sent from CE1 toCE2isTRUE?

• A.ASBR1 sends the data packet with one label: the BGP label.
• B.ASBR2 sends the data packet with three labels: the bottom label is a service label, the middle label is a BGP label, and the top label is an LDP label.
• C.ASBR1 sends the data packet with one label: the service label.
• D.PE1 sends the data packet with three labels: the bottom label is a service label, the middle label is a BGP label, and the top label is an LDP label.