AWS Certified SysOps Administrator Official Study Guide. Cole Stephen

Amazon RDS uses the Elastic Queue Service to process requests from application servers and send them to database engines. Since this is done at the Hypervisor, no user intervention is required.

      C. Amazon RDS runs both database instances independently, and each has their own connection string. You will have to update the code on your application servers because AWS has no visibility above the Hypervisor.

      D. Amazon RDS uses Amazon Route 53 to create connection strings and will automatically update the IP address to point at the standby instance.

      12. When attaching an Amazon Elastic Block Store (Amazon EBS) volume to an Amazon Elastic Compute Cloud (Amazon EC2) instance, what conditions must be true?

      A. The Amazon EBS volume must be in the same Availability Zone (AZ) as the instance.

      B. The Amazon EBS volume must be in the same account as the instance.

      C. The Amazon EBS volume must be assigned to an AMI ID.

      D. The Amazon EBS volume must have the same security group as the instance.

      13. You’ve been asked to migrate a busy Amazon Relational Database Service (Amazon RDS) for MySQL database to Amazon Aurora. You need to do so with little downtime and with no lost data. What is the best way to meet the above requirements?

      A. Take a snapshot of the MySQL Amazon RDS instance. Use that snapshot to create an Amazon Aurora Read Replica of the Amazon RDS for MySQL database. Once replication catches up, make the Aurora Read Replica into a standalone Amazon Aurora DB cluster, and point the application to the new Amazon Aurora DB cluster.

      B. Create an Amazon Simple Storage Service (Amazon S3) bucket, and upload the Amazon RDS database as a flat file dump into the bucket. Restore from the dump to a new Amazon Aurora database.

      C. Restore the most recent Amazon RDS automated backup to a new Amazon Aurora instance. Stop the application, point the application at the new Amazon Aurora DB instance, and start the application.

      D. Take a snapshot. Restore the snapshot to a new Amazon Aurora instance. Point the application to the new Amazon Aurora DB instance, and start the application.

      14. In case of a failure of the primary node of an Amazon Relational Database Service (Amazon RDS) instance with an RDS Multi-AZ deployment, you must do the following to recover:

      A. Nothing. The node will automatically fail over to each of the three included read replicas in alternative regions.

      B. Nothing. The node will automatically fail over to the standby instance; a short amount of downtime may occur.

      C. Manually stand up a new instance by restoring from the most recent automatic backup.

      D. Manually initiate the failover using the AWS CLI initialize-rds-failover command.

      15. As part of an application requirement that you’ve been given, you must deploy a new Amazon DynamoDB database. You must do so in a highly available manner. How do you deploy this database?

      A. Deploy the Amazon DynamoDB database in a single Availability Zone (AZ). Set up an automatic backup job to Amazon S3 and an automatic restore job from S3 to a DynamoDB database in a second AZ.

      B. Use the Amazon DynamoDB Local version in two AZs.

      C. You can’t use Amazon DynamoDB for HA requirements.

      D. Deploy an Amazon DynamoDB database in the desired region.

      16. Your application has a database that has been reported as being slow by your end users. Upon investigation, you find that the database is seeing an extraordinarily high volume of read activity. What is one way to overcome this constraint?

      A. Place an Amazon CloudFront distribution between the application layer and the database.

      B. Use AWS Shield to protect against too many reads from the application layer to the database.

      C. Use Amazon ElastiCache to provide a cache for frequent reads between the application layer and database.

      D. Use AWS Route53 Latency Based Routing to direct traffic to the least latent database node.

      17. You have assigned an Elastic IP to an Amazon Elastic Compute Cloud (Amazon EC2) instance. You then terminate that instance. What happens to that Elastic IP?

      A. The Elastic IP remains associated with the account, and you start getting charged for it.

      B. The Elastic IP remains associated with the account.

      C. The Elastic IP is deleted along with the Amazon EC2 instance.

      D. You cannot delete an Amazon EC2 instance with an Elastic IP associated with it. You must remove or delete the Elastic IP first.

      18. You are using Amazon CloudFront to serve static content to your users. What would be the best way to control access to the content?

      A. Create an Amazon Simple Service (Amazon S3) bucket policy using AWS Identity and Management (IAM) as the mechanism to control access.

      B. Have your application create and distribute either signed URLs or signed cookies.

      C. Use the LIST Distribution API within Amazon CloudFront.

      D. Use Origin Access Identity (OAI) to secure access to content in Amazon CloudFront.

      19. You are looking to encrypt your Amazon DynamoDB table. How would you do this?

      A. In the Amazon DynamoDB console, turn on server-side encryption.

      B. Via the AWS CLI, turn on server-side encryption.

      C. Use client-side encryption, as Amazon DynamoDB does not support server-side encryption.

      D. Enable Transparent Data Encryption (TDE).

      20. You are part of a team which is rebuilding your company’s monolithic web application. The team plans on using a tiered architecture. One of the primary goals is to be able to use Auto Scaling to add and remove Amazon Elastic Compute Cloud (Amazon EC2) instances on demand. To this end, you need to get user state data off of individual instances. Which of the following AWS cloud services will provide you with a shared data store that is highly durable and has low latency?

      A. Amazon DynamoDB

      B. Amazon EC2 Instance Storage

      C. Amazon Relational Database Service (Amazon RDS)

      D. Amazon Simple Storage Service (Amazon S3)

      21. Your company maintains an application that has a home-grown messaging cluster. You want to avoid maintaining this legacy cluster, and you need to migrate to an AWS service that provides this functionality. What service do you set up?

      A. AWS X-Ray

      B. Amazon CloudFront

      C. Amazon Elasticsearch

      D. Amazon Simple Queue Service (Amazon SQS)

      22. You need to create an Amazon Virtual Private Cloud (Amazon VPC) that will allow you to use AWS Direct Connect. Which of the following combinations will allow you to use AWS Direct Connect but also prevent connectivity to the Internet?

      A. You are not able to do so. If you have an AWS Direct Connect connection, by default, you have a connection to the Internet.

      B. Create a VPC with both an Internet Gateway (IGW) and a VPN Gateway.

      C. Create a VPC with an AWS Direct Connect Gateway.

      D. Create a VPC with a VPN Gateway.

      23. You have 10 Amazon Elastic Compute Cloud (Amazon EC2) instances behind a classic load balancer. What do you need to do to ensure that traffic is routed only to healthy instances?

      A. Terminate the unhealthy instances.

      B. Enable cross-zone load balancing on your load balancer.

      C. Turn on health checks, and the load balancer will send traffic to the healthy instances.

      D. Nothing. The load balancer will terminate the unhealthy instances.

      24. You