Refer to the exhibit.
This Layer 2 network is expected to add 150 VLANs over the next year, in addition to the existing 50 VLANs within the network. Which STP type will support this design requirement using the least amount of CPU resources and achieving load-balancing?

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?

Refer to the exhibit. You are a network designer who is given these design requirements:
* Multicast services must be provided for Layer 3 VPN customers
* The same forwarding technology must be used as Layer 3 VPN unicast packets
* Replication of multicast traffic is not allowed on the ingress PE
Which multicast VPN technology conforms to the design requirements?

How should multiple OSPF areas be designed when deployed on a classic three-layer (core/distribution/access) network hierarchy?

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