AWS Certified SysOps Administrator – Associate (legacy) — Question 614

A popular auctioning platform requires near-real-time access to dynamic bidding information. The platform must be available at all times. The current Amazon
RDS instance often reaches 100% CPU utilization during the weekend auction and can no longer be resized. To improve application performance, a sysops administrator is evaluating Amazon ElastiCache, and has chosen Redis (cluster mode enabled) instead of Memcached.
What are reasons for making this choice? (Choose two.)

Answer options

• A. Data partitioning
• B. Multi-threaded processing
• C. Multi-AZ with automatic failover
• D. Multi-region with automatic failover
• E. Online resharding

Correct answer: B, C

Explanation

Redis (cluster mode enabled) provides Multi-AZ with automatic failover, which ensures the high availability and continuous uptime required by the auction platform during a node failure. Additionally, it utilizes multi-threaded processing capabilities for specific operations to handle intensive workloads efficiently, making it a superior choice over Memcached for this high-demand, high-availability architecture.