A customer requests that you design their Layer 3 VPN solution so that all site-to-site traffic goes through a central site, in a hub-and-spoke fashion You must choose between using one or two interfaces on the hub WAN link.
In this scenario, which solution would you use?

Your customer is deploying a data center with redundant connections for WAN services through ISP-1 and ISP-2. Your customer has decided to deploy an active/passive Internet connection uplink model and pay-per-use for a passive connection associated with ISP-2. The customer wants to ensure limited use of the connection through ISP-2.
Which two actions would you perform to meet the objective? (Choose two )

You are asked to create a DCI that does not require MAC learning.
Which protocol would you use in this scenario?

You are asked to design a BNG solution using MX Series routers You want to dynamically assign per-subscriber configuration parameters using VSAs.
Which external service is required to accomplish this task?

What are two considerations for all WAN designs that use best industry practices? (Choose two)