What are three key design principles when using a classic hierarchical network model? (Choose three.)

A senior network designer suggests that you should improve network convergence times by reducing BGP timers between your CE router and the PE router of the service provider. Which three factors should you to consider when you adjust the timer values? (Choose three.)

You are asked to design a traffic policy to restrict traffic leaving a customer site. Which technique is recommended to enforce a traffic leaving the site?

In the network presented in the following exhibit, all routers are configured to run EIGRP on all links. All packets transmitted during convergence are transmitted once (there are no dropped or retransmitted packets). What is the maximum number of queries P4S-R3 might receive for 192.168.1.0/24 if the link between P4S-R1 and P4S-R2 fails?

You are the lead network designer for an enterprise company called ABC, and you are leading design discussions regarding IPv6 implementation into their existing network.
A question is raised regarding older Layer 2 switches that exist in the network, and if any changes are required to these Layer 2 switches for successful IPv6 implementation.
Which two responses should you give? (Choose two.)