Shaping and Rewrite Rules JN0-650 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   In a Junos rewrite rule, what are the two key inputs that determine the output packet marking?

   • AQueue depth and buffer size
   • BForwarding class and loss priority
   • CInterface name and logical unit number
   • DSource IP address and destination IP address
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2. 2application · medium

   A network administrator is troubleshooting a link where voice traffic is experiencing jitter. The administrator suspects that bursty data traffic is causing the voice queue to be starved. The administrator wants to smooth out the data traffic without dropping packets. Which CoS mechanism should be used?

   • APolicing the data traffic to a lower rate.
   • BShaping the data traffic to a lower rate.
   • CApplying a rewrite rule to mark data traffic with a lower priority.
   • DIncreasing the voice queue's buffer size.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A network engineer is configuring CoS on a Junos router. The router has a 1 Gbps interface, but the upstream provider only allows 200 Mbps of sustained traffic. The engineer wants to ensure the router never sends more than 200 Mbps out this interface, even during bursts. Which configuration should be applied?

   • AConfigure a scheduler with a shaping-rate of 200 Mbps on the interface.
   • BApply a firewall filter that drops traffic exceeding 200 Mbps.
   • CSet the interface's output queue to a priority of strict-high.
   • DSet the interface's physical MTU to 200 Mbps.
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5. 4foundation · easy

   Where is a rewrite rule applied in Junos CoS to affect transmitted packets?

   • ATo a firewall filter
   • BTo a scheduler
   • CTo a forwarding class
   • DTo an interface or logical unit
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6. 5application · medium

   A service provider delivers a 50 Mbps committed access rate to a customer. The customer's traffic is often bursty, and the provider wants to smooth out bursts without dropping packets. The provider's edge router has a 100 Mbps physical interface toward the customer. Which configuration approach should the provider use on the customer-facing interface?

   • AApply a policer with a 50 Mbps bandwidth limit and a burst-size limit of 100 kbytes.
   • BApply a rewrite rule that marks all traffic with a lower forwarding class.
   • CConfigure a shaping-rate of 50 Mbps on the interface's output scheduler.
   • DSet the interface MTU to 1500 bytes and enable TCP MSS clamping.
   Reveal Solution Discussion Select an answer first