Evaluate an Application Design Considering High-Availability and Resiliency (including On-Premises, Hybrid, and Cloud) 350-901 Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   In cloud computing, what is an availability zone (AZ) considered to be?

   • AA failure domain
   • BA data replication method
   • CA load balancing algorithm
   • DA global network
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2. 27foundation · easy

   A monitoring system is configured to send an alert when a server's CPU utilization exceeds 90% for 5 minutes. What is this an example of?

   • AThreshold-based alerting
   • BLoad balancing
   • CHealth check
   • DData replication
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4. 28expert · hard

   A company runs a critical application on-premises and wants to use a public cloud for disaster recovery. The application has an RTO of 2 hours and an RPO of 30 minutes. The application data is stored in a database that supports asynchronous replication. The company has a VPN connection between the on-premises data center and the cloud. Which strategy should they use?

   • AUse a multi-site active-active strategy with the application running in both on-premises and cloud.
   • BUse a pilot light strategy with the cloud infrastructure stopped and only started when a disaster is declared, then restore the database from the latest backup and apply the replicated logs.
   • CUse a backup-and-restore strategy with a daily backup stored in the cloud.
   • DUse a warm standby strategy with the cloud infrastructure running but scaled to zero, and restore the database from the latest backup.
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5. 29application · medium

   A company runs a critical application on two physical servers in an on-premises data center. The application is stateless and uses a load balancer to distribute traffic. The load balancer is a single point of failure. The company wants to eliminate this single point of failure. Which solution should they implement?

   • AUse a software load balancer on one of the application servers.
   • BDeploy a second load balancer in an active-passive configuration using a virtual IP (VIP) and a failover protocol like VRRP.
   • CConfigure the application servers to use a round-robin DNS record instead of a load balancer.
   • DAdd a third application server to handle the load if one of the existing servers fails.
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6. 30expert · hard

   A company runs a critical application in a single cloud region. The application has an RTO of 15 minutes and an RPO of 1 minute. The company wants to use a second cloud region for disaster recovery. The application data is stored in a database that supports synchronous replication across regions. Which disaster recovery strategy should they use?

   • AUse a warm standby strategy with the application deployed in the second region but scaled to zero, and restore the database from the latest backup.
   • BUse a backup-and-restore strategy with a backup taken every 5 minutes and stored in the second region.
   • CUse a pilot light strategy with the application infrastructure in the second region stopped and only started when a disaster is declared.
   • DUse a multi-site active-active strategy with synchronous database replication and a global load balancer that routes traffic to the nearest healthy region.
   Reveal Solution Discussion Select an answer first