5.05 Evaluate the Variables Relevant to Design a Cloud Bursting Solution 402 Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   A gaming company runs its matchmaking service on-premises. The service experiences predictable spikes on weekend evenings. The company plans to burst to the cloud to handle the spikes. The company's CFO wants to minimize cloud spending while ensuring the service never goes down during the spikes. Which cost strategy is MOST appropriate?

   • AUse spot instances exclusively, since they are the cheapest option and can be interrupted without impacting the service.
   • BUse on-demand instances that are provisioned by an automated trigger and terminated when the spike subsides.
   • CProvision a fixed set of cloud instances that run 24/7 to handle any spike, and use them as a standby cluster.
   • DPurchase reserved instances in the cloud for the full weekend capacity, since they are cheaper per hour than on-demand.
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2. 17application · medium

   A logistics company runs a route-optimization service on-premises. During peak shipping seasons, it bursts to the cloud. The service is mission-critical: if it fails, drivers cannot receive routes. The company wants to ensure that a cloud burst failure does not cause a complete outage. What is the MOST appropriate resilience strategy?

   • AConfigure the on-premises system to continue serving requests if the cloud burst fails, using a fallback mode with reduced functionality.
   • BUse a manual failover procedure where the IT team switches traffic back to on-premises if the cloud burst fails.
   • CProvision a second cloud region as a backup and fail over to it if the primary cloud region fails.
   • DIncrease the on-premises capacity to handle the full peak, eliminating the need for the cloud burst.
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4. 18expert · hard

   A financial trading firm runs a real-time market-data feed processor on-premises. The processor has a hard requirement to handle 10,000 messages/second with less than 10 ms processing latency. During market volatility, the message rate spikes to 50,000 messages/second. The firm wants to burst the excess to the cloud. The firm has a 10 Gbps dedicated connection to the cloud with 5 ms latency. What is the MOST significant challenge to this bursting plan?

   • AThe cloud provider may not have enough compute capacity to handle 50,000 messages/second during market volatility.
   • BThe 5 ms network latency added by the cloud burst may push the total processing latency above the 10 ms requirement.
   • CThe 10 Gbps connection may not have enough bandwidth to carry 40,000 additional messages/second.
   • DThe data synchronization between on-premises and cloud may cause inconsistent market-data views.
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5. 19application · medium

   A manufacturing company runs a real-time quality-control application on-premises. The application analyzes sensor data from factory floor machines with a 50 ms end-to-end latency budget. The company wants to burst a portion of the analytics workload to the cloud during high-volume production runs. The factory has a 100 Mbps internet connection. What is the MOST important network consideration?

   • AEnsure the 100 Mbps connection has sufficient bandwidth to stream all sensor data to the cloud in real time.
   • BVerify that the round-trip latency between the factory and the cloud region is consistently below 50 ms.
   • CUse a CDN to cache the sensor data at the edge to reduce the load on the 100 Mbps connection.
   • DEstablish a VPN connection to encrypt all sensor data transmitted to the cloud.
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6. 20foundation · easy

   Which cost factor is unique to cloud bursting compared to running workloads entirely in the cloud?

   • AData transfer fees between on-premises and cloud
   • BLoad balancer charges
   • CStorage costs for persistent data
   • DCompute instance hourly rates
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