Which effect of using ingress filtering to prevent spoofed addresses on a network design is true?

What are two primary design constraints when a robust infrastructure solution is created? (Choose two.)

Refer to the exhibit.

An engineer is designing the traffic flow for AS 111. Traffic from AS 111 should be preferred via AS 100 for all external routes. A method must be used that only affects AS 111. Which BGP attributes are best suited to control outbound traffic?

While designing a switched topology, in which two options is UplinkFast recommended? (Choose two )

Which two mechanisms avoid suboptimal routing in a network with dynamic mutual redistribution between multiple OSPFv2 and EIGRP boundaries? (Choose two.)