9. Explain the Impacts of Network Constraints on Applications 200-901 Practice Questions (Page 8)

Questions 36–40

1. 36foundation · easy

   A company is designing a network for a distributed application that requires low latency between two data centers. Which network design choice would most directly help reduce latency?

   • AIncreasing the MTU on all links
   • BUsing a hub-and-spoke topology with a central hub
   • CIncreasing the number of routers between the data centers
   • DPlacing the data centers geographically closer to each other
   Reveal Solution Discussion Select an answer first
2. 37foundation · easy

   A network engineer is analyzing a congested link. Which of the following is a direct consequence of network congestion?

   • AReduced jitter and improved voice quality
   • BIncreased queuing delay and packet drops
   • CDecreased latency and increased throughput
   • DIncreased bandwidth and lower packet loss
   Reveal Solution Discussion Select an answer first
4. 38application · medium

   A VoIP system is experiencing choppy audio and occasional dropped calls. The network team measures the following metrics on the WAN link: average latency 50 ms, jitter 30 ms, packet loss 0.1%. Which QoS configuration would most directly address the reported symptoms?

   • AUse a jitter buffer on the IP phones and configure priority queuing for VoIP traffic.
   • BDisable the jitter buffer to reduce delay.
   • CIncrease the WAN bandwidth to reduce average latency.
   • DConfigure the router to drop all non-VoIP traffic.
   Reveal Solution Discussion Select an answer first
5. 39foundation · easy

   A network engineer is designing a network for a company that uses VoIP, video conferencing, and email. Which application is most sensitive to jitter and requires low latency?

   • AVoIP
   • BWeb browsing
   • CEmail
   • DFile transfer
   Reveal Solution Discussion Select an answer first
6. 40application · medium

   A hospital is deploying a remote robotic surgery system. The surgeon's console and the robotic arm are connected over a dedicated WAN link. The application requires end-to-end latency under 10 ms and zero packet loss. The network team must choose a QoS strategy. Which approach best meets the application's requirements?

   • AApply random early detection (RED) to the surgery traffic to avoid congestion.
   • BClassify the surgery traffic with DSCP EF and apply strict priority queuing on all WAN interfaces.
   • CUse weighted fair queuing with equal weights for all traffic classes.
   • DIncrease the WAN bandwidth to 10 Gbps and rely on overprovisioning to avoid congestion.
   Reveal Solution Discussion Select an answer first