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

Refer to the exhibit.

The network administrator of a large-scale EIGRP network has found that one hub- andspoke topology in the network is incurring a lot of link flaps. While several attempts have been made to reduce the number of link flaps, it does not appear that the stability of the hub-and-spoke topology can be improved.
The reason for this is that most failures seem to result from power outages in a number of locations.
Which course of action should the network administrator follow?

Refer to the exhibit ACME Mining has four data centres in Santiago, Cape town, Mumbai, and Beijing, full-mesh connected via a 400 Mb/s EVP-LAN. They want to deploy a new mission-critical application with these requirements
* cluster heartbeat 2 Mb/s continuous (250 KB/s)
* cluster heartbeat one-way maximum latency 100 ms
These are the current ping tests results between the four data centers:

Which hosting data center pair can host the new application?

Refer to the exhibit.

The routers in this network are all running EIGRP. What is the most important step to take in order to ensure that this network core will converge quickly should a link failure occur?

What are two design advantages to using virtual port channel? (Choose two.)