AWS Certified Solutions Architect - Professional
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A data analytics company operates an Amazon Redshift cluster with reserved nodes, which is currently facing unexpected high CPU usage due to complex read queries from a team compiling a deep audit analysis report. The business requires uninterrupted service for both read and write queries. What is the most cost-effective solution for a solutions architect to accommodate these sudden usage spikes?
A
Provision an Amazon EMR cluster to handle the complex data processing tasks.
B
Deploy an AWS Lambda function to increase the Amazon Redshift cluster's capacity using a classic resize operation when CPU metrics in Amazon CloudWatch reach 80%.
C
Deploy an AWS Lambda function to increase the Amazon Redshift cluster's capacity using an elastic resize operation when CPU metrics in Amazon CloudWatch reach 80%.
D
Enable the Concurrency Scaling feature for the Amazon Redshift cluster.