Workshop

A company plans to migrate its application to AWS and run the application on Amazon EC2 instances. The application will have continuous usage for 1 year. 

 

Which EC2 instance purchasing option will meet these requirements MOST cost-effectively? 

• Reserved Instances

• Spot Instances

• On-Demand Instances

• Dedicated Hosts

Answer explanation

Reserved Instances offer up to 72% discount. 

While spot instances offer up to 90% discount, they are not guaranteed to run continuously.

A company is running and managing its own Docker environment on Amazon EC2 instances. The company wants an alternative to help manage cluster size, scheduling, and environment maintenance. 

Which AWS service meets these requirements? 

• AWS Lambda

• Amazon RDS

• AWS Fargate

• Amazon Athena

Answer explanation

AWS Fargate is a serverless compute engine for containers.

According to security best practices, how should an Amazon EC2 instance be given access to an Amazon S3 bucket? 

• Hard code an IAM user’s secret key and access key directly in the application

• Store the IAM user’s secret key and access key in a text file on the EC2 instance

• Have the EC2 instance assume a role to obtain the privileges to upload the file

• Modify the S3 bucket policy so that any service can upload to it at any time

Answer explanation

IAM Roles doesn’t expose AWS credentials. Use AWS managed policies to grant permissions for common use cases.

A company has 5 TB of data stored in Amazon S3. The company plans to occasionally run queries on the data for analysis. 
Which AWS service should the company use to run these queries in the MOST cost-effective manner? 

• Amazon Redshift

• Amazon Athena

• Amazon Kinesis

• Amazon RDS

Answer explanation

Athena is a serverless query service that allows you to analyze data directly in Amazon S3 using standard SQL.  

Other options here may be valid, but the keyword here is MOST. Redshift is a data warehouse service, Kinesis is real time processing for streaming data, RDS is relational database service. 

A company plans to use an Amazon Snowball Edge device to transfer files to the AWS Cloud. 
 
Which activities related to a Snowball Edge device are available to the company at no cost? 

• Use of the Snowball Edge appliance for a 10-day period

• The transfer of data out of Amazon S3 and to the Snowball Edge appliance

• Daily use of the Snowball Edge appliance after 10 days

• The transfer of data from the Snowball Edge appliance into Amazon S3

Answer explanation

Data transfer IN to Amazon S3 is $0.00 per GB. All other options will incur costs.

Which AWS service can be used to manually launch instances based on resource requirements? 

• Amazon EBS

• Amazon ECS

• Amazon S3

• Amazon EC2

Answer explanation

EC2 instances can be manually launched based on the given configuration.

When is the benefit of Spot Instance for a company? 

• When an instance should not be stopped

• When there is flexibility in when an application needs to run

• When dedicated capacity is needed

• When there are mission-critical workloads

Answer explanation

Spot Instances perform exactly like other EC2 instances while running. However, they can be interrupted by Amazon EC2 when EC2 needs the capacity back.

How many Availability Zones should compute resources be provisioned across to achieve high availability?

• Minimum one

• Minimum two

• Minimum three

• Minimum four

Answer explanation

Compute resources should be provisioned across at least two availability zones for high availability.

Which Amazon EC2 instance pricing model can provide discounts of up to 90%?

• Minimum one

• Reserved Instances

• Dedicated Hosts

• Spot Instances

Answer explanation

Spot Instance - 90% Discount

Reserved Instance - 72% Discount

A company wants to save costs by archiving data that is no longer frequently accessed by end users. 

Which Amazon S3 feature will meet this requirement? 

• S3 Versioning

• S3 Lifecycle

• S3 Object Lock

• S3 Inventory

Answer explanation

An S3 Lifecycle configuration is a set of rules that define actions that Amazon S3 applies to objects so that they are stored cost effectively.