You are working on a network design plan for a company with approximately 2000 sites.
The sites will be connected using the public Internet. You plan to use private IP addressing in the network design, which will be routed without NAT through an encrypted WAN network. Some sites will be connected to the Internet with dynamic public IP addresses, and these addresses may change occasionally. Which VPN solution will support these design requirements?

Which two statements describe how including cisco IPoDWDM proactive protection in an optical design would minimize packet loss in the event of a fiber cut? (Choose two.)

Refer to the exhibit. Company XYZ has 150 branch locations across the U.S. Each branch is connected to two aggregation routers, one router in each data center. The network is configured with multiple OSPF areas, and the aggregation routers are ABRs. A requirement is to keep an optimal path to the data centers and, at the same time, reduce the LSA propagation and SPF recomputation during a change in any part of the network.
Which design element should be included on the aggregation routers?

If a network design must support rapid convergence on half-duplex interfaces, which IEEE
802.1w capability should be used?

You are designing a new multisite data center network within the same city. You are using the newest routers that run OSPF and DWDM point-to-point interfaces for site-to-site connectivity. Your primary objective is to use the fastest possible method for interface failure detection. Which method achieves this objective?