DBS-C01 Monitoring and Troubleshooting Practice Question

Correct answer & explanation

Auto-scaling can prevent throttling only if the maximum capacity is set appropriately and traffic patterns are predictable. Option B is correct because if the auto-scaling maximum capacity is set too low, the table cannot scale enough to handle the write demand. Option C is correct because auto-scaling reacts to sustained traffic but cannot instantly accommodate a sudden traffic spike that exceeds the maximum capacity. Option E is correct because even with auto-scaling, an uneven partition key distribution can cause a single partition to exceed its throughput capacity, leading to throttling. Option A is incorrect; a global secondary index with the same partition key does not inherently cause throttling on the base table. Option D is incorrect because eventually consistent reads affect read capacity, not write capacity, and do not cause write throttling.