A company requests that you consult with them regarding the design of their production, development, and test environments. They indicate that the environments must communicate effectively, but they must be kept separate due to the inherent failures on the development network. What will be configured on the links between the networks to support their design requirements?

What is the best practice for tuning routing protocol hello and dead timers when deploying
IGP non-stop
forwarding (NSF)?

You are a network designer who must fine tune the convergence of an IS-IS network. The failure detection mechanism has been addressed with reliable loss-of-signal at the interface level. Which three other tools or techniques should be employed to achieve your requirements? (Choose three.)

You have been asked to establish a design that will allow your company to migrate from a WAN service to a Layer 3 VPN service. In your design, you are keeping some WAN links between critical sites as a backup for this service. You plan to use OSPF as your IGP and BGP for the PE- CE protocol. When the Layer 3 VPN service is available, how will you prevent transit traffic over the backup links?

Which two reasons are for instrumenting your network and network devices to collect performance data?
(Choose two.)