DBS-C01 Monitoring and Troubleshooting Practice Question
A company uses Amazon CloudWatch to monitor an RDS for Oracle instance. They want to receive an alert when the database connection count exceeds 90% of the maximum connections. Which CloudWatch metric should be used to create the alarm?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
DatabaseConnections
(DatabaseConnections) is correct because this metric tracks the number of client connections to the database instance, which directly reflects the connection count. To alert when connections exceed 90% of maximum connections, you would monitor DatabaseConnections and compare it to the instance's MaxConnections parameter. Option A (ActiveTransactions) is incorrect because it measures the number of concurrent transactions, not connections. Option C (ReadIOPS) and Option D (NetworkThroughput) are unrelated metrics for disk I/O and network traffic, respectively.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ActiveTransactions
Why it's wrong here
Incorrect. This metric tracks open transactions, not connections.
- ✓
DatabaseConnections
Why this is correct
Correct. This metric directly reflects the number of connections.
- ✗
ReadIOPS
Why it's wrong here
Incorrect. This measures disk operations, not connections.
- ✗
NetworkThroughput
Why it's wrong here
Incorrect. This measures network traffic, not connections.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DBS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DBS-C01 exam.