What is an advantage of using the HP Network Optimizer SDN application with UC&C applications rather than just the SDN applications?
A. It enables the QoS trust boundary to be shifted to the switch.
B. It enables the UC&C Client to select the UC&C application server optimally located for them.
C. It removes the need for queuing.
D. It enables QoS verification for BYOD.
Correct Answer: D
Explanation/Reference:
Explanation:
The first capability that’s implemented is the ability of the Lync server (or any communications server, potentially) to dynamically provide to the network controller the IP addresses/ports of the paired endpoints of a real time flow. This enables the network to mark, without deep packet inspection, those flows with a CoS/QoS tag that will give them the proper treatment in the network. This becomes a positive identification of "authorized" real-time flows; any device/flow trying to use that tagging that is not "authorized" through the API can automatically be re-tagged to a best effort service class.
This technique has a number of critical advantages over current techniques. When compared to the typical VLAN, it enables positive tagging of a variety of devices, including BYOD and potentially other systems that might have multiple traffic types (e.g., a PC running a soft client or a tablet).
In addition, when compared to deep packet inspection at each access element, it reduces cost as well as eliminating the errors and complexity that encryption of the packet stream can introduce.
Reference: HP and Microsoft Demo OpenFlow-Lync Applications-optimized Network
