4A0-106 Online Practice Questions and Answers

Which protocol is used to exchange customer VPRN routes between PE devices?

A. OSPF

B. ISIS

C. MP-BGP

D. BGP

E. Targeted LDP

In a VPRN that uses MPLS transport tunnels, which of the following statements about P devices is TRUE?

A. P devices participate in service provider core routing.

B. P devices are not required to be MPLS-enabled.

C. P devices must be aware of the VPRNs.

D. P devices must support MP-BGP.

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

A. It is the most scalable of the Inter-AS models.

B. VRF configuration is not required on the ASBRs.

C. Most routers that support VPRN functionality do not support model A by default.

D. It is not necessary to run MPLS at the boundary between autonomous systems.

Click the exhibit.

Which of the following commands produces the output for the inter-AS model B VPRN?

A. ASBR1# show router 10 bgp routes vpn-ipv4

B. ASBR1# show router bgp routes

C. ASBR1# show router bgp routes vpn-ipv4

D. ASBR1# show router route-table

Click the exhibit.

What is wrong with the VPRN configuration applied on this Alcatel-Lucent 7750 SR?

A. The VPRN ID must match the value used in the vrf-target command.

B. The VPRN ID must match the value used in the route-distinguisher command.

C. The router-id command should not be used in this context.

D. The "no shutdown" command must be configured for the VPRN to be operationally UP.

Based on the VPRN BGP decision process, which of the following routes is selected first if the command "PE1>config>service>vprn> bgp best-path-selection as-path-ignore" is executed?

A. The route learned from an eBGP peer.

B. The route with the lowest Origin.

C. The route with the lowest originator ID or BGP Identifier.

D. The route with the shortest AS path.

Click the exhibit.

How many route targets and route distinguishers are required to implement the extranet VPRN?

A. Three route targets and three route distinguishers

B. Five route targets and three route distinguishers

C. Three route targets and two route distinguishers

D. Five route targets and two route distinguishers

If Route Reflector 1 (RR1) is used for Internet routes, and Route Reflector 2 (RR2) is used for VPN routes, which of the following is TRUE?

A. BGP sessions established between RR2 and the PEs support IPv4 and VPN-IPv4 address families.

B. BGP sessions established between RR1 and the PEs support the IPv4 address family only.

C. BGP sessions established between RR1 and the PEs support IPv4 and VPN-IPv4 address families.

D. BGP sessions established between RR2 and the PEs support the IPv4 address family only.

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). Which of the following about route distribution is FALSE?

A. The VRF 10 on CSC-PE1 includes PE1 and PE2's system addresses.

B. The global routing table of PE1 includes PE2's system address.

C. The VRF 10 on CSC-PE2 includes CEI'S address.

D. The global routing table of PE2 includes CE1's address.

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

A. Model B does not require the configuration of VPRN instances on ASBRs.

B. The ASBRs peer with each other to transport VPN-IPv4 routes between autonomous systems.

C. PE routers distribute VPN-IPv4 routes to their local ASBR.

D. One single ASBR is required in each AS to hold the routes for all VPRNs.