nokia 4a0-106 practice test

Complete the following statement. In a VPRN, the inner label is used to _______________.

• A. Identify the customer network on the egress PE
• B. Establish the LSPs between PE devices
• C. Identify the egress PE in the MPLS domain
• D. Identify the customer network on the ingress PE

Which of the following devices would typically have VRF instances?

• A. Any CE device
• B. Any PE device
• C. Any P device
• D. Any router in the service provider core
• E. Any customer router

What operation is performed by a P device on the label signaled by MP-BGP when it receives a
labeled packet for a VPRN service?

• A. It will label switch the packet based on this label
• B. It will decrement the TTL and label switch the packet based on this label
• C. It will SWAP the label for a new label and then label switch the packet
• D. The P router does not perform any operation on this label

Which of the following statements is true? Choose the best answer.

• A. A P router may forward customer packets to their destination without the presence of a route to that destination
• B. The ingress PE router may forward customer packets to their destination without the presence of a route to that destination
• C. The egress PE router may forward customer packets to their destination without the presence of a route to that destination
• D. Any provider core router (P or PE) may forward customer packets to their destination without the presence of a route to that destination

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, 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

Which of the following statements is true regarding the Route Distinguisher? (Choose three)

• A. It is an 8 byte value containing 3 fields
• B. The Route Distinguisher must have the same value as the Route Target.
• C. The Administrator field contains either an AS number or an IP number
• D. To ensure uniqueness, Route Distinguishers are assigned by the IANA.
• E. The Route Distinguisher is not used if the customer addresses do not overlap
• F. The Assigned Number field must contain a public IP address

In a VPRN, which of the following are supported as PE-CE routing methods on the Nokia 7750 SR?
(Choose four).

• A. Static
• B. RIP
• C. OSPF
• D. IS-IS
• E. MP-BGP
• F. BGP

Which method does the Nokia 7750 SR use for the allocation of VPRN labels?

• A. One label per route
• B. One label per next-hop
• C. One label per VRF
• D. One label per prefix
• E. One label per tunnel

In a provider core consisting of 6 PE and 4 P routers, what is the minimum number of BGP sessions
required in total for correct operation of VPRN services?

• A. 0
• B. 5
• C. 10
• D. 15
• E. 45