2.3 Design Dynamic Path Selection Policies 500-220 Practice Questions (Page 5)

Questions 21–22

1. 21application · medium

   An administrator notices that during peak hours, voice calls over the site-to-site VPN experience jitter and occasional drops. The MX has two WAN links: a cable link and a DSL link. The cable link has lower latency but higher jitter during peak hours, while the DSL link has higher latency but stable jitter. The administrator wants to ensure voice traffic uses the link with the most stable performance. Which configuration should be applied?

   • ADisable dynamic path selection and manually route voice traffic over the DSL link.
   • BEnable load balancing across both links for voice traffic.
   • CCreate a traffic shaping rule for voice traffic and set its path preference to 'Best path' with a custom performance class that weights jitter more heavily.
   • DSet the cable link as the primary uplink and the DSL link as the backup.
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2. 22expert · hard

   A network administrator is reviewing the dynamic path selection page and notices that a critical application is being routed over a path that has higher latency than the alternative. The performance class for the application is set to 'Low loss'. The administrator suspects that the path selection is not working correctly. What should the administrator check FIRST?

   • AVerify that the performance class thresholds are correctly configured for the application.
   • BReboot the MX to reset the path selection engine.
   • CCheck the uplink status to ensure both uplinks are up.
   • DReview the traffic shaping rules to ensure the application is correctly identified.
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