When creation of an EBS snapshot is initiated, but not completed, the EBS volume:

• A.Cannot be used until the snapshot completes.
• B.Can be used in read-only mode while the snapshot is in progress.
• C.Can be used while the snapshot is in progress.
• D.Cannot be detached or attached to an EC2 instance until the snapshot completes

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A company hosts an online shopping application that stores all orders in an Amazon RDS for PostgreSQL Single-AZ DB instance Management wants to eliminate single points of failure and has asked a solutions architect to recommend an approach to minimize database downtime without requiring any changes to the application code.
Which solution meets these requirements?

• A.Create a read-only replica of the PostgreSQL database in another Availability Zone Use Amazon Route
  53 weighted record sets to distribute requests across the databases.
• B.Convert the existing database instance to a Multi-AZ deployment by modifying the database instance and specifying the Multi-AZ option.
• C.Place the RDS for PostgreSQL database in an Amazon EC2 Auto Scaling group with a minimum group size of two Use Amazon Route 53 weighted record sets to distribute requests across instances.
• D.Create a new RDS Multi-AZ deployment Take a snapshot of the current RDS instance and restore the new Multi-AZ deployment with the snapshot

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You are working with a customer who is using Chef configuration management in their data center.
Which service is designed to let the customer leverage existing Chef recipes in AWS?

• A.Amazon Simple Workflow Service
• B.AWS Elastic Beanstalk
• C.AWS CloudFormation
• D.AWS OpsWorks

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The Trusted Advisor service provides insight regarding which four categories of an AWS account?

• A.Security, fault tolerance, high availability, and connectivity
• B.Security, access control, high availability, and performance
• C.Performance, cost optimization, security, and fault tolerance
• D.Performance, cost optimization, access control, and connectivity

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A solutions architect is designing a system to analyze the performance of financial markets while the markets are closed The system will run a series of compute-intensive jobs for 4 hours every night The time to complete the compute jobs is expected to remain constant, and jobs cannot be interrupted once started Once completed, the system is expected to run for a minimum of 1 year Which type of Amazon EC2 instances should be used to reduce the cost of the system?

• A.Standard Reserved Instances
• B.Scheduled Reserved Instances
• C.On-Demand Instances
• D.Spot Instances

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