CoS Processing on Junos Devices JN0-650 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   Which sequence correctly describes the CoS processing stages on a Junos device from ingress to egress?

   • AScheduling, classification, policing, shaping
   • BPolicing, classification, shaping, scheduling
   • CClassification, policing, scheduling, shaping
   • DClassification, shaping, policing, scheduling
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   Which component is required to implement a multifield (MF) classifier on a Junos device?

   • AA rewrite rule
   • BA firewall filter
   • CA scheduler map
   • DA policer
   Reveal Solution Discussion Select an answer first
4. 23expert · medium

   A network engineer is configuring CoS on a Junos router with four forwarding classes. They want to ensure that the network-control (NC) queue is always serviced, even when other queues are congested. They also want to ensure that the best-effort (BE) queue gets a minimum of 20% of the interface bandwidth. Which scheduler configuration should they use?

   • AConfigure NC with strict-priority and BE with a transmit-rate of 20%
   • BConfigure NC with a high transmit-rate and BE with a low transmit-rate
   • CConfigure NC with a low drop-profile and BE with a high drop-profile
   • DConfigure NC with a large buffer-size and BE with a small buffer-size
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   Which statement about schedulers and rewrite rules is true?

   • ASchedulers and rewrite rules are both applied on ingress
   • BSchedulers and rewrite rules both classify packets on ingress
   • CSchedulers manage queue transmission, while rewrite rules mark packets for egress
   • DSchedulers mark packets, while rewrite rules manage queue transmission
   Reveal Solution Discussion Select an answer first
6. 25application · medium

   A network administrator is troubleshooting packet drops on a congested Junos interface. They notice that packets with loss priority high are being dropped more aggressively than those with loss priority low. What is the most likely reason for this behavior?

   • AThe scheduler is configured with a drop profile that has a higher drop probability for loss priority high
   • BThe classifier is mapping packets to different forwarding classes based on loss priority
   • CThe policer is configured to drop all packets with loss priority high
   • DThe rewrite rule is marking packets with loss priority high on egress
   Reveal Solution Discussion Select an answer first