AWS Application Integration Services

Question 1

Which Amazon SQS queue type guarantees that messages are delivered in the exact order they are sent and that each message is processed exactly once?

Accepted Answer

FIFO Queue

Answer

Standard Queue

Answer

Dead-Letter Queue

Answer

Delay Queue

Question 2

A company wants to fan out a single event notification to multiple subscriber endpoints simultaneously (email, SQS, Lambda, HTTP). Which AWS service is the best fit?

Accepted Answer

Amazon SNS

Answer

Amazon SQS

Answer

Amazon EventBridge

Answer

AWS Step Functions

Question 3

What happens to a message in an Amazon SQS standard queue if a consumer retrieves it but does not delete it before the visibility timeout expires?

Accepted Answer

It becomes visible again and can be processed by another consumer

Answer

It is permanently deleted from the queue

Answer

It is moved to the Dead-Letter Queue immediately

Answer

It is archived to Amazon S3

Question 4

Amazon EventBridge (formerly CloudWatch Events) uses 'rules' to route events. What is the primary mechanism a rule uses to match incoming events?

Accepted Answer

Event patterns (JSON pattern matching against event fields)

Answer

SQL-like query strings

Answer

Regular expressions against the event body

Answer

XPath expressions against the event XML

Question 5

Which AWS service is best suited for coordinating a multi-step, long-running business workflow that includes human approval steps, error handling, and retries across multiple AWS services?

Accepted Answer

AWS Step Functions

Answer

Amazon SQS

Answer

Amazon SNS

Answer

Amazon EventBridge Pipes

Question 6

What is the maximum message retention period for an Amazon SQS queue?

Accepted Answer

14 days

Answer

1 day

Answer

4 days (default)

Answer

30 days