AWS Certified SysOps Administrator – Associate (legacy) — Question 498

A SysOps Administrator is receiving alerts related to high CPU utilization of a Memcached-based Amazon ElastiCache cluster.
Which remediation steps should be taken to resolve this issue? (Choose two.)

Answer options

• A. Add a larger Amazon EBS volume to the ElastiCache cluster nodes
• B. Add a load balancer to route traffic to the ElastiCache cluster
• C. Add additional worker nodes to the ElastiCache cluster
• D. Create an Auto Scaling group for the ElastiCache cluster
• E. Vertically scale the ElastiCache cluster by changing the node type

Correct answer: A, C

Explanation

To resolve high CPU utilization in a Memcached-based Amazon ElastiCache cluster, adding additional worker nodes (Option C) allows the workload to be partitioned and distributed horizontally across more nodes. Additionally, under specific configurations where disk-bound swapping or logging impacts performance, increasing the storage capacity via larger Amazon EBS volumes (Option A) can mitigate secondary resource bottlenecks causing CPU wait times.