Sometimes SDN leverages various overlay networking technologies to create layer(s) of network abstraction. What describes an overlay network?

Which two statements about MLD snooping are true? (Choose two)

Drag and drop the characteristics from the left onto the corresponding network management options on the right.

A business requirement stating that failure of WAN access for dual circuits into an MPLS provider for a Data Centre cannot happen due to related service credits that would need to be paid has led to diversely routed circuits to different points of presence on the providers network? What should a network designer also consider as part of the requirement?

Which two data plane hardening techniques are true? (Choose two)