You are designing an 802.11 wireless network to include a controller as a central configuration point and access points across several remote sites. Which two aspects will manage the flow of the traffic to meet these design considerations? (Choose two.)

Refer to the exhibit Assume that no multicast optimization is done on LAN switches A and B Which two solutions can be used to optimize multicast traffic forwarding in this situation? (Choose two )

Select and Place:

Refer to the exhibit. If IEEE 802.1w is in use for this network design, what are two locations where spanning-tree root can be placed to ensure the least-disruptive Layer 2 failover for clients within VLANs 3 and 4? (Choose two.)

Refer to the exhibit.

This network is running IS-IS as the single routing protocol and the LSP and SPF timers are aggressively configured so the network converges in subsecond. The customer reports that router B had a memory crash and reloaded, which resulted in some packets from the application being lost. The application servers are behind router G and the end users are behind router H.
Which design change should be made to prevent this packet-loss problem from reoccurring?