Campus WAN Performance JN0-1103 Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   A network architect is comparing two WAN designs for a campus. Design A uses a single high-bandwidth link. Design B uses two lower-bandwidth links with load balancing. Both designs have the same total bandwidth. Which statement is true regarding the performance characteristics of these designs?

   • ADesign A is more resilient because it has fewer points of failure.
   • BDesign B always provides higher throughput because it uses multiple links.
   • CDesign A may provide lower latency for a single flow because it avoids the per-packet load-balancing delay.
   • DDesign B has lower jitter because traffic is spread across two links.
   Reveal Solution Discussion Select an answer first
2. 22application · medium

   A branch office uses a 50 Mbps MPLS link to access a central ERP system and also carries VoIP calls. During peak hours, users report choppy audio and slow ERP responses. The network team observes that large file transfers from a backup server saturate the link. Which QoS configuration should be applied to improve both voice quality and ERP responsiveness?

   • AApply compression to all traffic and keep the default queuing.
   • BClassify all traffic as BE and rely on the router's default FIFO queuing.
   • CClassify VoIP as AF41, ERP as EF, and backup as BE.
   • DClassify VoIP as EF, ERP as AF41, and backup traffic as BE, then apply a scheduling policy that prioritizes EF and AF41 over BE.
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4. 23application · medium

   A company has a WAN link with high latency (100 ms) between two sites. Users access a central file server that stores large documents. The file transfers are slow, and the link is often congested. Which WAN optimization technique would be most effective in improving file transfer performance?

   • AUse compression on the WAN link.
   • BDeploy a WAN optimization appliance that uses protocol optimization and caching.
   • CIncrease the TCP window size on the file server.
   • DImplement QoS to prioritize file transfer traffic.
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   When sizing a WAN link, why should you consider peak traffic periods rather than just average traffic?

   • ABecause the link must handle the highest demand without severe degradation
   • BBecause average traffic is always lower than peak
   • CBecause peak traffic is easier to measure
   • DBecause ISPs charge based on peak usage
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6. 25application · medium

   A branch office has a 20 Mbps WAN link. The traffic mix is 30% VoIP, 20% interactive applications, and 50% bulk file transfers. The network team wants to ensure VoIP quality and keep the interactive applications responsive. Which QoS strategy is most appropriate?

   • AUse strict priority queuing for all traffic classes.
   • BUse only bandwidth allocation for all traffic classes.
   • CUse compression on the link and rely on FIFO queuing.
   • DUse priority queuing for VoIP, bandwidth allocation for interactive traffic, and best-effort for bulk transfers.
   Reveal Solution Discussion Select an answer first