AWS-Certified-Solutions-Architect-Professional Question 11
Your company has an on-premises multi-tier PHP web application, which recently experienced downtime due to a large burst in web traffic due to a company announcement. Over the coming days, you are expecting similar announcements to drive similar unpredictable bursts, and are looking to find ways to quickly improve your infrastructues ability to handle unexpected increase in traffic.
The application currently consists of 2 tiers a web tier which consists of a load balancer and several Linux apache web server as well as a database tire which host a Linux server hosting a MySQL database.
Which scenario below will provide full site functionality, while helping to improve the ability of your application in the short timeframe required?
A. Failover environment: Create an S3 bucket and configure it for website hosting. Migrate your DNS to Route 53 using zone file import, and leverage Route53 DNS failover to failover to the S3 hosted website.
B. Hybrid environment: Create an AMI, which can be used to launch web server in EC2. Create an Auto Scaling group, which uses the AMI to scale the web tier based on incoming traffic. Leverage Elastic load Balancing to balancer traffic between on-premises web server and those hosted in AWS.
C. Offload traffic from on-premises environment: Setup a CloudDront distribution, and configure CloudFront to cache objects from a custom origin. Choose to customize your object cache behavior, and select a TTL that objects should exist in cache.
D. Migrate to AWS: Use VM Import/Export to quickly convert an on-premises web server to an AML Create an Auto Scaling group, which uses the imported AMI to scale the web tier based on incoming traffic. Create an RDS read replica and setup replication between the RDS instance and on-premises MySQL server to migrate the database.
Answer: C
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