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An AWS Elastic Beanstalk application needs to be deployed in multiple regions and requires a different Amazon Machine Image (AMI) in each region.
Which AWS CloudFormation template key can be used to specify the correct AMI for each region?
ANSWER : C
How should custom libraries be utilized in AWS Lambda?
A. Host the library on Amazon S3 and reference to it from the Lambda function.
B. Install the library locally and upload a ZIP file of the Lambda function.
C. Import the necessary Lambda blueprint when creating the function.
D. Modify the function runtime to include the necessary library.
ANSWER : D
An application overwrites an object in Amazon S3, and then immediately reads the same object. Why would the application sometimes retrieve the old version of the object?
A. S3 overwrite PUTS are eventually consistent, so the application may read the old object.
B. The application needs to add extra metadata to label the latest version when uploading to Amazon S3.
C. All S3 PUTS are eventually consistent, so the application may read the old object.
D. The application needs to explicitly specify latest version when retrieving the object.
ANSWER : A
A website’s page load times are gradually increasing as more users access the system at the same time. Analysis indicates that a user profile is being loaded from a database in all the web pages being visited by each user and this is increasing the database load and the page load latency. To address this issue the Developer decides to cache the user profile data.
Which caching strategy will address this situation MOST efficiently?
A. Create a new Amazon EC2 Instance and run a NoSQL database on it. Cache the profile data within this database using the write-through caching strategy.
B. Create an Amazon ElastiCache cluster to cache the user profile data. Use a cacheaside caching strategy.
C. Use a dedicated Amazon RDS instance for caching profile data. Use a writethrough caching strategy.
D. Create an ElastiCache cluster to cache the user profile data. Use a write-through caching strategy.
ANSWER : B
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 s3:x-amz-acl as a condition in the S3 bucket policy.
B. Use Amazon RDS with default encryption.
C. Use aws:SecureTransport as a condition in the S3 bucket policy.
D. Turn on S3 default encryption for the S3 bucket.
ANSWER : D