Exam HPE6-A73 topic 1 question 71 discussion

From ACSP Learning book QoS Egress Queue Shaping/Rate Limiting: - A is wrong because "EQS limits the amount of traffic transmitted per output queue" - B is wrong because Interface Rate Limiting can be applied for broadcast, multicast and unknown unicast and Interface Rate Limiting is not same than EQS - C is wrong because "EQS can be configured on an Ethernet port or on link aggregation group (LAC)" - D is correct

C: Rate limiting, you configure it per physical or lag interface. P:825 Study Guide

https://www.arubanetworks.com/techdocs/AOS-CX/10.08/PDF/qos_832x.pdf Page 851 Study Guide: Egress queue shaping allows you to apply a maximum bandwidth to a priority queue, as well as a burst size. [Aruba Networks]

D is correct。 for example: switch(config)# qos schedule-profile EQSExample switch(config-schedule)# strict queue 0 switch(config-schedule)# strict queue 1 max-bandwidth 10000000 burst 120 switch(config-schedule)# strict queue 2 switch(config-schedule)# strict queue 3 switch(config-schedule)# strict queue 4 max-bandwidth 20000000 switch(config-schedule)# strict queue 5 switch(config-schedule)# strict queue 6 switch(config-schedule)# strict queue 7 max-bandwidth 30000000 burst 120 switch(config-schedule)# exit switch(config)# interface 1/1/1 switch(config-if)# apply qos schedule-profile EQSExample

I think it should be D. EQS can be configured with a schedule profile and be applied on an ETH port or LAG, cannot be applied in globally (Test with 8400 and 8325).

Page 258 vol2 says Egress queue shaping limits the amount of traffic transmitted per output queue.

I think that C is correct because rate limiting can be applied globally by a policy and for egress queue shapping apply the global schedule profile when apply the queue profile. Based on the schedule profile, DWRR is being used and the queue and schedule profile are applied globally. A is not correct: queue shaping restrict outbound traffic B is not correct: restrict unknow unicast D is not correct: traffic rate limit is configured on interface level

Correct Answer: D