1. A company is migrating a single-server, on-premises web application to AWS. The company intends to use multiple servers behind an Elastic Load Balancer (ELB) to balance the load, and will also store session data in memory on the web server. The company does not want to lose that session data if a server fails or goes offline, and it wants to minimize user's downtime. Where should the company move session data to MOST effectively reduce downtime and make users' session data more fault tolerant?

A) A second Amazon EBS volume
B) The web server - s primary disk
C) An Amazon ElastiCache for Redis cluster
D) An Amazon EC2 instance dedicated to session data



2. A Developer is designing a new application that uses Amazon S3. To satisfy compliance requirements, the Developer must encrypt the data at rest. How can the Developer accomplish this?

A) Use
B) Use Amazon RDS with default encryption.
C) Use
D) Turn on S3 default encryption for the S3 bucket.



3. A Developer is trying to make API calls using SDK. The IAM user credentials used by the application require multi-factor authentication for all API calls. Which method the Developer use to access the multi-factor authentication protected API?

A) GetCallerIdentity
B) DecodeAuthorizationMessage
C) GetSessionToken
D) GetFederationToken



4. A Developer has created a Lambda function and is finding that the function is taking longer to complete than expected. After some debugging, the Developer has discovered that increasing compute capacity would improve performance. How can the Developer increase the Lambda compute resources?

A) Increase the maximum execution time.
B) Specify a larger compute capacity when calling the Lambda function.
C) Run on a larger instance size with more compute capacity.
D) Increase the allocated memory for the Lambda function.



5. During non-peak hours, a Developer wants to minimize the execution time of a full Amazon DynamoDB table scan without affecting normal workloads. The workloads average half of the strongly consistent read capacity units during non-peak hours. How would the Developer optimize this scan?

A) Use sequential scans
B) Change consistency to eventually consistent during the scan operation
C) Increase read capacity units during the scan operation
D) Use parallel scans while limiting the rate