MCQs on Troubleshooting and Best Practices | AWS RDS Quiz
Enhance your knowledge of AWS RDS troubleshooting and best practices with these 30 well-structured AWS RDS MCQ questions and answers. This quiz covers topics like common RDS errors, failure recovery, database migration, and cost optimization tips. Ideal for certifications, interviews, or hands-on work, these questions boost your understanding of RDS.
Common RDS Errors and Solutions (10 MCQs)
- Which RDS error commonly occurs when a database instance runs out of storage?
a) InstanceOverloadException
b) StorageFullError
c) InsufficientStorageAvailable
d) DiskQuotaExceeded - What might cause an “Access Denied” error when connecting to an RDS instance?
a) Incorrect IAM role
b) Misconfigured security group rules
c) Incompatible database engine version
d) Lack of Multi-AZ deployment - How can you resolve high CPU utilization on an RDS instance?
a) Reboot the instance
b) Increase the instance class size
c) Enable automated backups
d) Disable IAM database authentication - What action is recommended if your RDS instance fails to start?
a) Verify VPC connectivity
b) Delete and recreate the instance
c) Restore from a snapshot
d) Reduce storage capacity - How do you resolve the “Too many connections” error in RDS?
a) Increase the connection limit
b) Modify IAM roles
c) Restart the database engine
d) Migrate to a smaller instance - What is the best solution for an RDS instance with frequent latency spikes?
a) Use read replicas
b) Enable Multi-AZ deployment
c) Perform manual backups
d) Restrict API requests - Which error occurs if the SSL certificate for RDS expires?
a) CertificateNotFoundError
b) ExpiredCertificateException
c) SSLConnectionFailedError
d) AuthenticationError - If an RDS instance is stuck in the “Modifying” state, what is the recommended action?
a) Open an AWS Support ticket
b) Reboot the instance
c) Cancel the modification request
d) Increase instance size - What is a common cause of backup failures in RDS?
a) Insufficient IAM permissions
b) No Multi-AZ deployment
c) Disabled automated backups
d) Incorrect database parameter groups - What does the “ThrottlingException” indicate in RDS?
a) Overuse of CPU resources
b) Too many API requests
c) Insufficient storage capacity
d) Faulty IAM policies
Handling Failures and Recovery Scenarios (10 MCQs)
- What is the first step in recovering from an accidental RDS instance deletion?
a) Contact AWS support
b) Restore from the latest snapshot
c) Increase storage size
d) Recreate the instance - How do Multi-AZ deployments help in failure scenarios?
a) By providing automatic failover
b) By enhancing storage performance
c) By reducing latency
d) By enabling read replicas - Which tool helps in diagnosing and recovering from RDS instance failures?
a) AWS CloudWatch
b) Amazon S3
c) AWS Inspector
d) AWS X-Ray - What should you do if an RDS instance becomes unreachable?
a) Check VPC security group rules
b) Enable Multi-AZ failover
c) Disable automated backups
d) Delete the instance - How can you minimize data loss during RDS instance failures?
a) Enable continuous backups
b) Increase instance class size
c) Enable IAM database authentication
d) Use local snapshots - Which of these is a valid failover mechanism in RDS?
a) Multi-AZ replication
b) Manual parameter tuning
c) Custom SSL certificates
d) Reserved instances - What is a common use case for point-in-time recovery in RDS?
a) Fixing application latency
b) Reverting to a specific database state
c) Upgrading the database engine
d) Testing disaster recovery plans - How do you recover data from a corrupted RDS instance?
a) Create a read replica
b) Restore from a snapshot
c) Increase storage capacity
d) Use database migration tools - What does AWS RDS automatically handle during instance failover?
a) DNS endpoint redirection
b) Database engine upgrades
c) Manual scaling operations
d) Backup creation - How can you avoid downtime during RDS maintenance?
a) Use maintenance windows
b) Enable read replicas
c) Perform manual scaling
d) Use Aurora Serverless
Database Migration Best Practices (5 MCQs)
- Which AWS service is best suited for migrating databases to RDS?
a) AWS DMS
b) AWS Glue
c) AWS CloudFormation
d) AWS Config - Before migrating a database to RDS, what should you ensure?
a) Backup the source database
b) Disable all security groups
c) Increase source database storage
d) Reduce instance class size - How can you test database migration to RDS without downtime?
a) Use replication-based migration
b) Schedule downtime
c) Perform a full data dump
d) Reduce database connections - Which of the following is NOT a recommended database migration practice?
a) Analyze data schemas before migration
b) Perform backups during migration
c) Test application compatibility post-migration
d) Disable encryption for faster migration - How can you ensure a smooth database migration to RDS?
a) Use the same database engine version
b) Perform manual updates to schemas
c) Migrate without testing applications
d) Avoid using IAM roles
Optimizing Costs and Usage Patterns (5 MCQs)
- What is the primary benefit of reserved instances in RDS?
a) Reduced operational costs
b) Faster database queries
c) Automatic failover
d) Enhanced security - Which AWS service can help optimize RDS costs?
a) AWS Trusted Advisor
b) AWS Lambda
c) Amazon S3
d) Amazon CloudFront - How can you minimize storage costs for RDS?
a) Use automated storage scaling
b) Manually delete unused backups
c) Use Multi-AZ deployments
d) Increase database instance size - Which RDS feature helps reduce costs for infrequent workloads?
a) On-demand instances
b) Aurora Serverless
c) Multi-AZ deployment
d) Elastic Beanstalk - What is a key consideration for optimizing RDS performance and cost?
a) Monitor usage with AWS CloudWatch
b) Disable backups
c) Use larger instance types
d) Disable IAM roles
Answers
| Qno | Answer |
|---|---|
| 1 | c) InsufficientStorageAvailable |
| 2 | b) Misconfigured security group rules |
| 3 | b) Increase the instance class size |
| 4 | c) Restore from a snapshot |
| 5 | a) Increase the connection limit |
| 6 | a) Use read replicas |
| 7 | b) ExpiredCertificateException |
| 8 | a) Open an AWS Support ticket |
| 9 | c) Disabled automated backups |
| 10 | b) Too many API requests |
| 11 | b) Restore from the latest snapshot |
| 12 | a) By providing automatic failover |
| 13 | a) AWS CloudWatch |
| 14 | a) Check VPC security group rules |
| 15 | a) Enable continuous backups |
| 16 | a) Multi-AZ replication |
| 17 | b) Reverting to a specific database state |
| 18 | b) Restore from a snapshot |
| 19 | a) DNS endpoint redirection |
| 20 | a) Use maintenance windows |
| 21 | a) AWS DMS |
| 22 | a) Backup the source database |
| 23 | a) Use replication-based migration |
| 24 | d) Disable encryption for faster migration |
| 25 | a) Use the same database engine version |
| 26 | a) Reduced operational costs |
| 27 | a) AWS Trusted Advisor |
| 28 | a) Use automated storage scaling |
| 29 | b) Aurora Serverless |
| 30 | a) Monitor usage with AWS CloudWatch |