In an IS-IS network, why does the DIS create a pseudo-node?
A. It represents a group of routers on the same non-broadcast network.
B. It represents the topological database of the backbone network in an IS-IS network.
C. It represents a broadcast sub-network.
D. It represents the complete topology of an IS-IS area.
Which of the following best describes an OSPF Type 3 LSA?
A. A Type 3 LSA is generated by an ASBR only when route summarization is configured.
B. A Type 3 LSA is generated by an ABR only when route summarization is configured.
C. A Type 3 LSA is generated by an ASBR to describe routes to routers outside the area.
D. A Type 3 LSA is generated by an ABR to describe routes to routers outside the area.
What is a key benefit of a VPLS service?
A. The customer maintains complete control over routing.
B. The adding of new sites is simplified; no re-configuration is required at existing sites.
C. The clear demarcation of functionality between service provider and customer makes troubleshooting easier.
D. All of the above.
An operator needs to provision 6VPE on a 7750 SR that is also used to provide existing IPv4 VPRN services. IPv6 VPRN customers use BGP as a PE-CE protocol. Which of the following statements is FALSE regarding the configuration steps required?
A. MP-BGP sessions need to be configured in the service provider network to support a VPN-IPv6 address family.
B. PE routers must be configured to run MP-BGP and IPv6
C. PE-to-CE BGP sessions need to be configured to support IPv6.
D. The provider core must be configured to support IPv6
E. None of the above statements are false.
F. All of the above statements are false
Which of the following statements is NOT a valid reason to use MP-BGP as a routing protocol to transport VPRN routes?
A. The number of VPRN routes can become very large. MP-BGP can support a very large number of routes.
B. MP-BGP can carry routing information for a number of different address families.
C. MP-BGP is designed to exchange information between routers that are not directly connected. This feature keeps VPRN routing information out of P-routers.
D. MP-BGP can carry additional information attached to a route as an optional BGP attribute.
E. All of the above statements are valid reasons for using MP-BGP as a VPRN routing protocol.
Which of the following about IS-IS Traffic Engineering on an Alcatel-Lucent 7750 SR is FALSE?
A. Traffic engineering information is carried in the extended TLVs.
B. Traffic engineering must be enabled on all IP/MPLS routers along the LSP path.
C. Traffic engineering information is stored in the opaque database,
D. Traffic engineering is required for constraint-based LSPs.
Which of the following SAP encapsulations support multiple services on a port? (Choose 3)
A. dot1q
B. null
C. qinq
D. atm
E. ipcp
F. bcp-null
Click the exhibit.
The output is from PE router R1 about VPRN service 100. From which protocol did router R1 learn the prefix 192.168.20.0/24?
A. LDP
B. BGP
C. MP-BGP
D. MPLS
Which of the following statements best describes the main difference between an Ipipe and an Epipe interworking?
A. An Ipipe is a point-to-point Layer 2 VPN capable of only carrying Ethernet payloads. An Epipe interworking refers to the transportation of ATM/FR traffic over an Epipe.
B. An Ipipe is used for performing Ethernet interworking with ATM/FR/PPP using bridged- PDUs. An Epipe interworking is used for performing Ethernet interworking with ATM/FR/PPP using routed-PDUs.
C. An Ipipe is used for performing Ethernet interworking with ATM/FR/PPP using routed- PDUs. An Epipe interworking is used for performing Ethernet interworking with ATM/FR/PPP using bridged-PDUs.
D. None of the above.
Which of the following messages is NOT used in T-LDP operation?
A. Hello message
B. Init message
C. Keepalive message
D. Label Mapping message
E. ACK message
