AWS Academy Cloud Architecting Module 12 Answers

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Which statement describes the difference between tightly and loosely couple architecture?

A. Components in a tightly coupled architecture are a highly dependent on each other, but they are not highly dependent in a loosely coupled architecture.
B. Loosely coupled architectures must use managed services, and tightly coupled architectures do not have this limitation.
C. Tightly coupling any part of an architecture means that the entire architecture is tightly coupled, but this principle does not apply to a loosely coupled architecture.
D. Tightly coupled architectures are more likely to fail than loosely coupled architectures.

Ans- A

Which phrases describe Amazon SQS? (Select THREE).

A. Sends push notifications to consumers
B. Stores and encrypts messages until they are processed and deleted
C. Supports email and text messaging
D. Enables you to decouple and scale microservices, distributed systems, and serverless applications
E. Uses a pull mechanism
F. Supports standard queues and last-in-first-out (LIFO) queues

Ans – B, D, E

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Which scenarios indicate that you should use an Amazon SQS standard queue? (Select TWO).

A. A message might need to be delivered more than once.
B. Message prioritization is necessary.
C. Messages must be processed in the order they are sent.
D. A message must be processed only once.
E. Messages can be sent in any order.

Ans – not B

A fleet of Amazon EC2 instances process videos that users upload. Which function can Amazon SQS perform in this application?

A. An SQS queue receives messages from the application and notifies all available EC2 instances that videos are available.
B. The application places job messages in an SQS queue. EC2 instances with available processing capacity pull the next job message from the queue.
C. The application writes the video files to an SQS queue. EC2 instances with available processing capacity pull the next video from the queue
D. EC2 instances put edited video files in an SQS queue. The application retrieves the videos from the queue.

Ans – B

What is Amazon SNS?

A. A cost-effective, flexible and scalable email service that enables developers to send email from within any application
B. A serverless event but that enables easy connection of applications by using data from your own applications, integrated SaaS applications, and AWS services
C. A fully managed messaging service for both system-to-system and application-to-person (A2P) communication, which uses publish/subscribe patterns
D. A flexible and scalable outbound and inbound marketing communications service that uses email, SMS, push or voice communication channels

Ans – C

What are some use cases for Amazon SNS? (Select THREE).

A. Gathering streaming data from multiple systems.
B. Notify multiple systems that user input is ready for processing.
C. Trigger a single AWS Lambda function when an object is created in an Amazon S3 bucket.
D. Hold input until it can be processed in the order it was received.
E. Send a push notification to mobile applications when a new software update is available.
F. Send a text message to systems operators when unusual activity has been detected.

Ans – B, E, F

What are some features of Amazon SNS? (Select THREE).

A. Message delivery to an Amazon SQS queue
B. Recall of sent messages
C. Guaranteed delivery
D. Message delivery to a URL
E. Support for encryption
F. Automatic message sorting by time

Ans – A, D, E

What is Amazon MQ?

A. Managed queue service
B. Message broker service
C. Identity broker service
D. Message query service

Ans – B

What is a good use case for Amazon MQ?

A. Connecting a VPC to an on-premises network
B. Decoupling components in a new cloud-native application
C. Uploading a standalone static website to AWS
D. Migrating an existing on-premesis application that uses Apache ActiveMQ to communicate between microservices

Ans – D

Two AWS Lambda functions must simultaneously process PDF files when they are uploaded to an Amazon S3 bucket. The S3 event notification allows only one action when the PDF files are uploaded. Which solution provides the simplest and most efficient way to trigger both Lambda functions?

A. Send the S3 event to Amazon MQ for distribution to both Lambda functions.
B. Send the S3 event to an Amazon SQS queue that both Lambda functions poll.
C. Send the S3 event to an Amazon SNS topic that both Lambda functions subscribe to.
D. Upload two copies of each PDF file by using different object key prefixes..

Ans – Not B

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