JNCIP-ENT: Juniper Networks Certified Professional – Enterprise Routing (2022) — Question 20

Which three statements are true about strict-high priority queues? (Choose three.)

Answer options

• A. In systems that support strict-high and high priority queues, traffic in the strict-high queue is completely emptied, and then high priority queue traffic is processed.
• B. In systems that support strict-high and high priority queues, traffic in these two priorities is processed in a round-robin fashion.
• C. When a strict-high queue goes into negative credits, it will maintain a strict DSCP marking.
• D. When a strict-high queue can never go into negative credits and will always transmit the traffic in the queue.
• E. In systems that support multiple strict-high priority queues, traffic in the strict-high queue is processed in a round-robin fashion.

Correct answer: A, D, E

Explanation

Answer A is correct because strict-high queues are emptied entirely before processing high priority queues. Answer D is also correct as strict-high queues do not allow for negative credits, ensuring continuous transmission of traffic. Answer E is correct too since multiple strict-high queues operate in a round-robin manner. Options B and C are incorrect as they misrepresent the processing order and the management of DSCP markings in relation to negative credits.