A Developer has published an update to an application that is served to a global user base using Amazon CloudFront. After deploying the application, users are not able to see the updated changes.
How can the Developer resolve this issue?

• A.Remove the origin from the CloudFront configuration and add it again.
• B.Disable forwarding of query strings and request headers from the CloudFront distribution configuration.
• C.Invalidate all the application objects from the edge caches.
• D.Disable the CloudFront distribution and enable it again to update all the edge locations.

Comment: *

Name: *

Email: *

Verification: *

An application takes 40 seconds to process instructions received in an Amazon SQS message.
Assuming the SQS queue is configured with the default VisibilityTimeout value, what is the BEST way, upon receiving a message, to ensure that no other instances can retrieve a message that has already been processed or is currently being processed?

• A.Use the ChangeMessageVisibility API to increase the VisibilityTimeout, then use the DeleteMessage API to delete the message.
• B.Use the DeleteMessage API call to delete the message from the queue, then call DeleteQueue API to remove the queue.
• C.Use the ChangeMessageVisibility API to decrease the timeout value, then use the DeleteMessage API to delete the message.
• D.Use the DeleteMessageVisibility API to cancel the VisibilityTimeout, then use the DeleteMessage API to delete the message.

Comment: *

Name: *

Email: *

Verification: *

An application is designed to use Amazon SQS to manage messages from many independent senders. Each sender's messages must be processed in the order they are received.
Which SQS feature should be implemented by the Developer?

• A.Enable MessageDeduplicationIds on the SQS queue
• B.Configure each sender with a unique MessageGroupId
• C.Enable ContentBasedDeduplication on the SQS queue
• D.Configure each message with unique MessageGroupIds.

Comment: *

Name: *

Email: *

Verification: *

A developer has written an Amazon kinesis Data streams application. As usage grows and traffic over time, the application is regularly receiving provisionedThroughputExceededException error messages.
Which steps should the Developer take to resolve the error? (Select Two.)

• A.Use Auto scaling to scale the stream for better performance.
• B.Increase the delay between the GetRecords call and the PutRecords call.
• C.Increase the number of shards in the data stream.
• D.Specify a shard iterator using the shardlterator parameter.
• E.Implement exponential backoff on the GetRecords call and the PutRecords call.

Comment: *

Name: *

Email: *

Verification: *

A developer needs temporary access to resources in a second account
What is the MOST secure way to achieve this?

• A.Use the Amazon Cognito user pools to get short-lived credentials for the second account
• B.Create a cross-account access role, and use sts:AssumeRcie API to get short-lived credentials
• C.Create a dedicated IAM access key for the second account, and send it by mail.
• D.Establish trust, and add an SSH key for the second account to the IAM user

Comment: *

Name: *

Email: *

Verification: *