Why messaging services matter in AWS - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a simple AWS SQS queue named 'MyQueue'.

AWS

aws sqs create-queue --queue-name [1]

Drag options to blanks, or click blank then click option'

AMyQueue

BSampleQueue

CTestQueue

DQueue1

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different queue name than 'MyQueue'.

Omitting the --queue-name option.

The command creates an SQS queue named 'MyQueue'. This name is used to identify the queue.

2fill in blank

medium

Complete the code to send a message 'HelloWorld' to the SQS queue URL stored in QUEUE_URL.

AWS

aws sqs send-message --queue-url [1] --message-body HelloWorld

Drag options to blanks, or click blank then click option'

A$QUEUE_URL

BQUEUE_URL

CMyQueueUrl

DqueueUrl

Attempts:

3 left

💡 Hint

Common Mistakes

Using the variable name without the $ sign.

Using a placeholder string instead of the variable.

The variable $QUEUE_URL holds the URL of the SQS queue. It must be referenced with a $ to be expanded in the shell.

3fill in blank

hard

Fix the error in the AWS CLI command to receive one message from the queue URL stored in QUEUE_URL.

AWS

aws sqs receive-message --queue-url [1] --max-number-of-messages 1

Drag options to blanks, or click blank then click option'

Aqueue_url

BQueueUrl

C$QUEUE_URL

DQUEUE_URL

Attempts:

3 left

💡 Hint

Common Mistakes

Using the variable name without $.

Using incorrect casing or underscores.

The variable $QUEUE_URL must be used with the $ sign to correctly pass the queue URL to the command.

4fill in blank

hard

Fill both blanks to create an SNS topic named 'MyTopic' and subscribe an email endpoint to it.

AWS

aws sns create-topic --name [1]
aws sns subscribe --topic-arn [2] --protocol email --notification-endpoint [e-mail]

Drag options to blanks, or click blank then click option'

AMyTopic

Barn:aws:sns:us-east-1:123456789012:MyTopic

Carn:aws:sns:us-east-1:123456789012:OtherTopic

DTopicName

Attempts:

3 left

💡 Hint

Common Mistakes

Using different topic names in creation and subscription.

Using an ARN for a different topic.

The topic name must be 'MyTopic' to match the ARN used in the subscription command. The ARN includes the topic name and region/account info.

5fill in blank

hard

Fill all three blanks to publish a message 'Hello Subscribers' to the SNS topic ARN stored in TOPIC_ARN variable.

AWS

aws sns publish --topic-arn [1] --message [2] --subject [3]

Drag options to blanks, or click blank then click option'

A$TOPIC_ARN

B"Hello Subscribers"

C"Greeting"

DTOPIC_ARN

Attempts:

3 left

💡 Hint

Common Mistakes

Not using $ for the variable.

Not quoting the message or subject.

Using incorrect variable names.

The topic ARN variable must be referenced with $ to expand its value. The message and subject must be quoted strings.