An administrator is looking for a data center switching solution that will greatly reduce the likelihood of dropped frames when uplink congestion is experienced. Which AOS-CX switch queuing feature meets the administrator's needs?
Page 43 Study Guide:
The figure shows that 4 packets have arrived at some interface, sitting in a queue, waiting for service. If the ingress buffer used a single queue, Head Of Line (HOL) blocking could delay traffic. This occurs when the first packet in the queue (at the “head of the line”) is destined out a congested port, it delays all packets behind it, even though those that are destined to noncongested ports. | AOS- CX switches use an intra- switch queuing method called Virtual output Queuing ( VoQ ). VOQ prevents this problem by providing deep ingress buffers with separate queues for each egress port.
[Aruba Networks]
C and D both accomplish it, but it's the algorithm behind it. Therefore i think B is meant as a feature.
upvoted 2 times
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