On your MX Series router, traffic using the voice scheduler has exceeded its transmit rate. All other data is currently in profile. Referring to the exhibit, which statement is correct?
A.
The voice queue is serviced later than the less-critical queue.
B.
The voice queue is serviced later than the left-over queue.
C.
The voice queue is serviced before the critical queue.
D.
The voice queue is serviced after data queue.
I think B is correct.
I think that C is correct since Voice queue is strict-high priority. It will starve all the other WRR queues and send all packets before all the other WRR scheduler get a chance to.
C for sure.
C is correct as it has strict-high priority.
Critical has exceeded its transmit rate, it is out of profile and will come after all in profile data.
B is the correct answer
On M-series and T-series platforms, you can configure one queue per interface to have strict-high priority, which works the same as high priority, but provides unlimited transmission bandwidth.
When you configure a queue to have strict-high priority, you do not need to include the transmit-rate statement in the queue configuration because the transmission rate of a strict-high priority queue is not limited by the WRR configuration. If you do configure a transmission rate on a strict-high priority queue, it does not affect the WRR operation.
strict-high priority queues might starve low priority queues
http://www.juniper.net/techpubs/software/junos/junos94/swconfig-cos/configuring-strict-high-priority-on-m-series-and-t-series-platforms.html
I would say C is correct