Nokia Virtual Private Routed Networks - 4A0-106 模擬練習

A. PE2 pushes two labels on the IP packet and forwards it to ASBR2.

B. ASBR2 forwards the IP packet with one label to ASBR1.

C. ASBR1 label-switches the packet and forwards it with one label to PE1.

D. PE1 forwards an unlabeled IP packet to CE1.

A. There is a problem with OSPF authentication

B. None of the above

C. The PE and CE router have different OSPF interface types configured

D. OSPF is not configured on the CE router

E. The operational MTU does not match

A. Do not have any connections to the CE

B. Must support MP-BGP

C. Participate in service provider core routing

D. Run a common routing protocol with the CE router

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

F. Must be aware of the VPRNs

A. There are two Autonomous Systems between the local AS and the AS that originated the prefix.

B. The prefix is located in an Autonomous System directly connected to this router.

C. There is a single Autonomous System between the local AS and the AS that originated the prefix.

D. The prefix is located in Autonomous System 65100.

A. Distributing the customer routing information between

B. Forwarding the provider originated data packets to the appropriate customer site

C. Forwarding the customer originated data packets to the appropriate destination

D. Providing secure layer 3 routing exchange between sites

E. Distributing the customer generated labels between sites

A. This approach is recommended when multiple sites advertise the same prefix.

B. This approach requires additional memory on the PEs to store more routes.

C. This approach is recommended for extranet VPN.

D. This approach limits the opportunities for load balancing.

A. It uses conventional eBGP to distribute unlabeled IPv4 routes between ASBR routers in different autonomous systems.

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

C. It requires the configuration of back-to-back VRFs between ASBR routers in different autonomous systems

D. Most routers that support VPRN functionality support model A by default.

A. Configuring labeled eBGP sessions between CSC-CE and CSC-PE routers.

B. Advertising the received system addresses of remote PEs using either iBGP or IGP/LDP within each customer carrier site.

C. Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.

D. Configuring labeled iBGP sessions between PEs residing in different customer carrier sites.

A. It provides optimal routing between all sites.

B. It requires a full BGP mesh in the provider core.

C. Each customer site has a logically direct route to every other customer site.

D. It allows access between all CE devices and all sites participating in the same VRF.

A. It will label switch the packet based on this label

B. It will SWAP the label for a new label and then label switch the packet

C. It will decrement the TTL and label switch the packet based on this label

D. The P router does not perform any operation on this label