DBS-C01 Monitoring and Troubleshooting Practice Question
Exhibit
Refer to the exhibit. ``` 2019-11-01 12:00:00 UTC - DB instance: mydb - Error: 1040 - Too many connections 2019-11-01 12:00:01 UTC - DB instance: mydb - Connection refused 2019-11-01 12:00:02 UTC - DB instance: mydb - Connection refused ```
Refer to the exhibit. A DBA sees the above error log entries for an Amazon RDS for MySQL DB instance. Which action should the DBA take to resolve the 'Too many connections' error?
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
✓
Modify the DB parameter group to increase max_connections
Increasing the max_connections parameter in the DB parameter group allows the MySQL instance to handle more concurrent connections, directly resolving the 'Too many connections' error. Option B is incorrect because rebooting the DB instance does not change the connection limit, only temporarily clears existing connections. Option C is incorrect because modifying the DB security group adjusts network access rules, not the database's internal connection limit. Option D is incorrect because resetting the master user password addresses authentication issues, not the connection limit.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Modify the DB parameter group to increase max_connections
Why this is correct
Increasing max_connections allows more connections.
- ✗
Reboot the DB instance
Why it's wrong here
Rebooting does not increase max_connections.
- ✗
Modify the DB security group to allow more connections
Why it's wrong here
Security groups control network access, not database connections.
- ✗
Reset the DB instance master user password
Why it's wrong here
Password reset does not affect connection limits.
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JA
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.