Drag and drop the optical technology design characteristics on the left to the correct optical technologies on the right. Not all options are used

You are performing a BGP design review for a service provider that offers MPLS-based services to their end customers. The network is comprised of several PE routers that run iBGP with a pair of route reflectors for all BGP address families. Which two options about the use of Constrained Route Distribution for BGP/MPLS VPNs are true? (Choose two.)

A network administrator is in charge of multiple IPsec VPN headend devices that service thousands of remote connectivity, point-to-point, IPsec/GRE tunnels. During a recent power outage, in which it was found that a backup power supply in one of those headend devices was faulty, one of the headend routers suffered a complete shutdown event. When the router was successfully recovered, remote users found intermittent connectivity issues that went away after several hours. Network operations staff accessed the headend devices and found that the recently recovered unit was near 100% CPU for a long period of time.
How would you redesign the network VPN headend devices to prevent this from happening again in the future?

P4S-R2 and P4S-R3 are learning Network A and Network B through EBGP peering sessions as shown in the figure. P4S-R2 and P4S-R3 are also configured to peer by use of IBGP, and they are both advertising default routes through OSPF.
Network A is not able to reach
destinations on Network A; which step should be takes to solve this problem?

In a VPLS design solution, why would you use BGP instead of LDP for signaling?