A certain park deployed IPv6 for service testing. At the initial stage of deployment, engineers wanted to achieve network interoperability through Pv6 static routing. When creating IPv6 static routes. You can specify both the outgoing interface and the next hop, or only the outgoing interface or only the next hop.

As shown in the figure, R1, R2, R3, and R4 are in the same MPLS domain, and LDP is used to allocate MPLS labels between devices. R4 is the FEC Egress LSR of 4.4.4.0/24. If you want to realize that when R1 accesses 4.4.4.0/24, R4 does not need to query the label table but can understand the forwarding priority of the data, then R3's outgoing label for the FEC should be (). (Please fill in the Arabic numerals directly, without symbols)

What are the work that needs to be performed in the closing phase after the cutover acceptance is completed? (Multiple choice)

As shown in the figure, a sham link is established between PE1 and PE2 through the LoopBackD interface. CE2 can learn the route to the 192.168.1.0/24 network segment (the direct route on CE1) through the sham link and backdoor link. If you keep the default configuration, the cost value of the route from CE2 to the 192.168.1.0/24 network segment should be (). (Please fill in the Arabic numerals directly, without symbols)

Senior engineers with rich experience can quickly solve faults only by relying on experience, and the efficiency is very high.