2.7 User and Application Experience 400-007 Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   A company is designing a network for a new branch office. The budget is limited, but the office will run a mission-critical application that requires low latency. Which trade-off is most appropriate?

   • AUse a standard WAN link and rely on application-level retransmissions to handle any latency issues.
   • BDeploy a WAN optimization appliance to reduce latency, even if it adds cost.
   • CInvest in a higher-quality WAN link with lower latency, even if it exceeds the budget slightly.
   • DUse a lower-cost WAN link with higher latency, but implement QoS to prioritize the critical application.
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   Which QoS mechanism is used to differentiate traffic into classes for different treatment?

   • AQueuing
   • BShaping
   • CMarking
   • DClassification
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4. 23expert · hard

   A large enterprise is experiencing intermittent application slowdowns. The network team has deployed NetFlow and SNMP monitoring, but they cannot correlate the slowdowns with any network issue. Users report that the slowdowns occur at random times. Which additional monitoring technique would best help identify the root cause?

   • AIncrease the SNMP polling interval to collect more data points.
   • BUse packet capture on all network links to analyze every packet.
   • CDeploy synthetic transaction monitoring that simulates user transactions and measures response time.
   • DImplement a new routing protocol to improve network performance.
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   When designing a network for a real-time application, what is a common trade-off between low latency and cost?

   • AUsing more complex routing protocols to reduce latency
   • BUsing cheaper links and accepting higher latency
   • CUsing more expensive, higher-bandwidth links to reduce latency
   • DIncreasing security to reduce latency
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6. 25expert · hard

   A multinational company is redesigning its WAN. The design must support real-time video conferencing between offices, but the budget is fixed and cannot cover both redundant links and advanced QoS on all sites. The company has identified two critical sites where video quality is essential. Which trade-off best balances cost and user experience?

   • AUse a single link for all sites and rely on the video application's error correction to handle any issues.
   • BImplement advanced QoS and redundant links only on the two critical sites, and use basic QoS on the rest.
   • CImplement advanced QoS on all sites, but use a single link for non-critical sites and redundant links only for the two critical sites.
   • DImplement redundant links for all sites, but use basic QoS only on the critical sites.
   Reveal Solution Discussion Select an answer first