AWS Certified Solutions Architect Associate (SAA-C03) - Configuration Lab

The video tutorial covers managing databases using AWS RDS, focusing on modifying instances, creating read replicas, and the importance of using DNS for database connections. It explains the differences between multi-AZ deployments and read replicas, highlighting their roles in failover and performance scaling. The tutorial also emphasizes the need to manage databases through the RDS dashboard rather than EC2, and discusses the potential performance impacts of certain modifications.

Where should you manage your AWS RDS database instances?

• EC2 Dashboard

• AWS RDS Dashboard

• AWS S3 Dashboard

• AWS Lambda Dashboard

What is the maximum number of DB instances you can create in the given AWS account?

• 20

• 10

• 30

• 40

What is a potential impact of converting a database to multi-AZ?

• Increased storage capacity

• Automatic backup creation

• Improved read performance

• Performance impact during conversion

When is it advisable to convert a database to multi-AZ?

• During peak business hours

• Immediately after creation

• During low-traffic periods

• When the database is under heavy load

What is the primary purpose of creating a read replica?

• To increase storage capacity

• To improve write performance

• To scale out read performance

• To enable automatic backups

What is the difference between multi-AZ and read replicas?

• Multi-AZ is for failover; read replicas are for scaling reads

• Both are used for scaling reads

• Both are used for failover

• Multi-AZ is for scaling reads; read replicas are for failover

What should you use to connect to a database to ensure failover support?

• Instance ID

• DNS Name

• IP Address

• Subnet Group

Why is it important to use DNS instead of IP for database connections?

• IP addresses are not supported

• DNS is more secure

• DNS allows automatic failover

• DNS is faster

What is the Amazon Resource Name (ARN) used for?

• Connecting to EC2 instances

• Identifying AWS accounts

• Managing S3 buckets

• Scripting against databases

What is the key benefit of using read replicas?

• Increased write speed

• Improved read performance

• Enhanced security

• Reduced storage costs