4A0-106 Online Practice Questions and Answers

Which of the following statements are true regarding P devices in an MPLS VPRN? (Choose two.)

A. Participate in service provider core routing

B. P devices are not required to be MPLS enabled. MPLS is only required on the PE devices

C. Run a common routing protocol with the CE router

D. Must support MP-BGP

E. Do not have any connections to the CE

F. Must be aware of the VPRNs

In a VPRN, how does the service provider ensure that customer addresses are unique when multiple customers use the same address space?

A. It is the customer responsibility to ensure their address space is unique

B. The Route Distinguisher ensures that addresses are unique between customers.

C. The Route Target ensures that addresses are unique between customers

D. The provider will advise the customers to change their addresses

E. The provider will use NAT to ensure that addresses are unique between customers

In the output from an Alcatel-Lucent 7750 SR shown below, what does the highlighted text represent?

A. The LDP identifier

B. The Service identifier

C. The Route Target

D. The Route Distinguisher

E. The tunnel label

When an Alcatel-Lucent 7750 SR receives a BGP update containing an AS-Path loop, what is the default action?

A. The update is accepted and the route installed in the route table.

B. The update is accepted but the route will not be installed in the route table

C. The update is rejected

D. The peer session is dropped

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

A. The ASBRs use MP-eBGP to peer with each other and exchange IPv4 routes between autonomous systems.

B. The ASBRs use MP-iBGP to peer with PE routers in their autonomous system and exchange VPN-IPv4 routes.

C. The ASBRs maintain a mapping of labels for IPv4 routes exchanged between autonomous systems.

D. The ASBRs require per-VPRN configuration.

In a Carrier Supporting Carrier (CSC) VPRN, which of the following is a benefit to the network provider?

A. No need to build and maintain its own backbone.

B. The solution scales as the number of serviced customer carriers increases.

C. The solution scales as the number of VPNs offered by the customer carriers increases.

D. The ability to manage end-customer services.

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a BGP/MPLS service provider. Which route is present in PE1's global routing table?

A. 192.168.10.1

B. 192.168.20.1

C. 10.10.10.1

D. 10.10.10.6

Click the exhibit.

For the inter-AS model A VPRN shown, which of the following about the route advertisement of 192.168.1.0/27 is FALSE?

A. PE1 advertises 64496:1:192.168.1.0/27 route update to ASBR1.

B. PE2 advertises 192.168.1.0/27 route update to CE2.

C. ASBR1 advertises 64496:1:192.168.1.0/27 route update to ASBR2.

D. ASBR2 advertises 64497:1:192.168.1.0/27 route update to PE2.

When using the AS-override method to prevent BGP loops in VPRNs, where should the "as-override" CLI command be configured?

A. On the PE facing the CE neighbor

B. On the CE facing the PE neighbor

C. On the P facing the PE neighbor

D. On the PE facing the PE neighbor

Click the exhibit.

For the inter-AS model C VPRN, how many labels does PE1 push on a data packet received from CE1 and destined to CE2?

A. 1

B. 2

C. 3

D. 4