Policers and Schedulers JN0-664 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   In a Junos scheduler, what does the 'buffer-size' parameter control?

   • AThe drop profile used for congestion management
   • BThe maximum rate at which packets are transmitted
   • CThe amount of memory allocated to the queue for buffering packets
   • DThe priority of the queue in the scheduling process
   Reveal Solution Discussion Select an answer first
2. 22expert · hard

   A network engineer is configuring CoS on a router with two queues: a voice queue with strict-high priority and a data queue. The engineer wants to minimize delay for voice traffic while ensuring that the data queue can absorb bursts. The interface is 1 Gbps. Which buffer configuration should be used?

   • AAllocate a large buffer to the voice queue and a large buffer to the data queue.
   • BAllocate a large buffer to the voice queue and a small buffer to the data queue.
   • CAllocate equal buffers to both queues.
   • DAllocate a small buffer to the voice queue and a large buffer to the data queue.
   Reveal Solution Discussion Select an answer first
4. 23application · medium

   A network engineer is configuring CoS on a Juniper router to limit the output rate of a specific forwarding class to 200 Mbps on a 1 Gbps interface. The engineer wants to avoid dropping traffic during short bursts and instead buffer the excess traffic. Which configuration approach should be used?

   • AConfigure a scheduler with a transmit-rate of 200 Mbps and an appropriate buffer size for the forwarding class.
   • BUse a drop profile with a low drop probability to randomly drop traffic above 200 Mbps.
   • CSet the interface's shaping rate to 200 Mbps using the 'shaping-rate' statement at the interface level.
   • DApply a policer with a bandwidth limit of 200 Mbps and a burst size of 100 kbytes to the forwarding class.
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   Which two parameters are configured for a single-rate two-color policer on Junos?

   • ACIR and CBS
   • BBandwidth and burst
   • CPIR and PBS
   • DTransmit rate and buffer size
   Reveal Solution Discussion Select an answer first
6. 25foundation · easy

   Which of the following is a valid action that a policer can take on exceeding traffic in Junos?

   • AForward to a different interface
   • BChange the forwarding class
   • CQueue the traffic in a different scheduler
   • DSet the loss-priority to high
   Reveal Solution Discussion Select an answer first