Which of the following Community attributes can ensure that the propagation scope of BGP routing entries is only within the AS? (Multiple choice)

As shown in the figure, on the R1 router, network administrator A can control the path of traffic entering AS100 after modifying the MED value of the routing entry sent to R2 through the routing policy.

Which of the following BGP routing attributes cannot control BGP routing?

As shown in the figure, Site1 and Site2 need to achieve mutual access through the operator's BGP/MPLS IPVPN. It is known that the public network tunnel between PE1 and PE2 has been established (the label information is shown in the figure), and PE1 has advertised the route of network segment 192.168.1.0/24 in Site1 to PE2 through the MPLS BGP neighbor relationship, and the route learning is normal.

When grabbing between P and PE1, when Site2 accesses the 192.168.1.0/24 data of Site1, what should be the outermost label?

As shown in the figure, the router runs OSPF, and Area 2 is a completely stubby area. Please match the LSA type and area ID contained in each area.