In the NSAP address 06.2400.0001.0020.0300.01, which part is the area address?

As shown in the figure, RTA establishes eBGP neighbor relationships with RTB and RTC respectively, and both RTB and RTC advertise a route N to RTA.
As shown in the figure, if you want RTA to give priority to the routes advertised by RTB, and the routes advertised by RTC as a backup, you need _____.

P router RTA runs OSPF and BGP routing protocols at the same time. If an OSPF route is imported into BGP in network mode, the ORIGIN attribute value of the route in the BGP routing table is ____.

M In the network shown in the figure, the default next hop RTC of RTA, and the PBR configuration on RTA is as follows:
polic-based-route pbr_a permit node 10
if-match packet-length 64 100
applip-address next-hop 11.0.0.2
if-match packet-length 101 1000
applip-address next-hop 12.0.0.2
polic-based-route pbr_a dennode 20
Assuming that the strategy has been successfully applied, how will the data stream on RTA be forwarded?

M executes the displaospf vlink command on the MSR router RTA, the router output is as follows:
$?OSPF Process 100 with Router ID 3.3.3.3
Virtual Links
Virtual-link Neighbor-ID -> 2.2.2.2, Neighbor-State: Full
Interface: 20.0.0.1 (GigabitEthernet0/1)
Cost: 1 State: P-2-P Tpe: Virtual
Transit Area: 0.0.0.1
Timers: Hello 10, Dead 40, Retransmit 5, Transmit Dela1
From the above output, you can judge _______.