Which design principal improves network resiliency?

During evaluation of migrating current on premises infrastructure to add cloud-based infrastructure, a network planning team must meet three core requirements as they make recommendations on which cloud strategy to adopt going forward
* Technology is changing rapidly, therefore the enterprise must be open to adopting new ways of doing things, and be ready to invest CapEx-funds in the next three years
* Network bandwidth capacity requirements are dynamic and are expected to change over the next year
* If new technologies are to be introduced, operational expenses must be kept at a minimum. Which cloud strategy meets these requirements?

A service provider hires you to design its new managed CE offering to meet these requirements
* The CEs cannot run a routing protocol with the PE
* Provide the ability for equal or unequal ingress load balancing in dual-homed CE scenarios.
* Provide support for IPv6 customer routes
* Scale up to 250.000 CE devices per customer.
* Provide low operational management to scale customer growth.
* Utilize low-end (inexpensive) routing platforms for CE functionality.
Which tunneling technology do you recommend?

You have been tasked with designing a data center interconnect to provide business continuity You want to encrypt the traffic over the DCI using IEEE 802 1AE MACsec to prevent the deployment of any firewall or IPS. Which two interconnect technologies support MACsec? (Choose two.)

Company XYZ is in the process of identifying which transport mechanism(s) to use as their WAN technology. Their main two requirements are.
* a technology that could offer DPI, SLA, secure tunnels, privacy, QoS, scalability, reliability, and ease of management
* a technology that is cost-effective
Which WAN technology(ies) should be included in the design of company XYZ?