1.04 Apply Concepts Related to Application Bursting and Mobility 402 Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A retail company runs its e-commerce platform on-premises. During Black Friday, traffic is expected to triple for 6 hours. The company wants to burst the web tier into the cloud. The on-premises load balancer must be able to send a portion of incoming traffic to the cloud web servers. Which configuration is required on the on-premises load balancer to support this burst?

   • AEnable source-address persistence on the load balancer so that returning users are sent to the same cloud server.
   • BCreate a new virtual server on the load balancer with a different IP address and point it only to the cloud servers.
   • CConfigure the load balancer to redirect all traffic to the cloud provider's DNS name during the peak period.
   • DAdd the cloud web server instances to the load balancer pool and configure a health check that can reach them over the private network connection.
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2. 2foundation · easy

   Which benefit is directly associated with application mobility?

   • AElimination of all security risks
   • BReduced need for network bandwidth
   • CIncreased flexibility to choose or change cloud providers
   • DGuaranteed performance improvement
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4. 3application · medium

   A company is moving a multi-tier application from an on-premises data center to a public cloud. The application has a web tier, an application tier, and a database tier. The database is 2 TB and is updated continuously. The company needs to minimize data loss during the migration. Which challenge is most critical to address in this mobility scenario?

   • AEnsuring data consistency between the on-premises database and the cloud database during the final cutover.
   • BSelecting a cloud region that offers the lowest compute pricing for the application tiers.
   • CChoosing a VM size in the cloud that matches the on-premises server's CPU and memory specifications.
   • DConfiguring the cloud web tier to use the same SSL certificate as the on-premises web tier.
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5. 4application · medium

   A media company runs a video-rendering application on-premises. During a product launch, rendering jobs spike for 48 hours. The company plans to burst rendering workers into a public cloud VPC. The on-premises render manager must be able to dispatch jobs to the cloud workers and receive results. Which connectivity requirement is essential for this bursting architecture to function?

   • AA NAT gateway in the cloud VPC to allow the workers to initiate outbound connections to the on-premises render manager.
   • BA site-to-site VPN or dedicated connection between the on-premises network and the cloud VPC with routing configured for the worker subnets.
   • CA public DNS record for each cloud worker instance so the render manager can resolve their hostnames over the internet.
   • DA load balancer in the cloud to distribute rendering jobs among the workers based on CPU utilization.
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6. 5expert · hard

   A company plans to burst a batch-processing application into the cloud. The application reads from and writes to an on-premises database. The company has a site-to-site VPN between the on-premises network and the cloud VPC. During a test burst, the cloud instances can reach the on-premises database, but the batch jobs fail intermittently with connection timeouts. The on-premises database is behind a firewall. What is the most likely cause of the intermittent failures?

   • AThe on-premises database is overloaded because it is also serving the normal on-premises application load.
   • BThe VPN tunnel is down, and the cloud instances are intermittently using a public fallback path to reach the database.
   • CThe cloud instances are running out of memory because the batch jobs are too large for the selected instance size.
   • DThe firewall is dropping traffic from the cloud instance IP addresses because the security policy only allows traffic from the on-premises application server subnets.
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