Why message queues decouple services in RabbitMQ - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a queue named 'task_queue' in RabbitMQ.

RabbitMQ

channel.queue_declare(queue='[1]')

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

Aqueue1

Bjobs

Cmessages

Dtask_queue

Attempts:

3 left

💡 Hint

Common Mistakes

Using a generic or wrong queue name like 'jobs' or 'messages'.

The queue name must be 'task_queue' to match the intended queue for tasks.

2fill in blank

medium

Complete the code to publish a message 'Hello' to the 'task_queue'.

RabbitMQ

channel.basic_publish(exchange='', routing_key='task_queue', body='[1]')

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

AHello

BHi

CMessage

DTest

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different message text than 'Hello'.

The message body should be 'Hello' as specified.

3fill in blank

hard

Fix the error in the code to consume messages from 'task_queue'.

RabbitMQ

channel.basic_consume(queue='task_queue', on_message_callback=[1], auto_ack=True)

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

Ahandle_message

Bprocess_message

Ccallback

Dconsume

Attempts:

3 left

💡 Hint

Common Mistakes

Using a generic or undefined function name.

The callback function must be named 'handle_message' as defined elsewhere to process messages.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that filters messages with priority greater than 5.

RabbitMQ

filtered = {msg: priority[1] for msg, priority in messages.items() if priority [2] 5}

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

A**2

B>

C*2

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using exponentiation instead of multiplication.

Using less than instead of greater than.

The comprehension multiplies priority by 2 and filters where priority is greater than 5.

5fill in blank

hard

Fill all three blanks to create a dictionary of uppercase message keys with their priorities filtered by priority > 3.

RabbitMQ

result = [1]: [2] for [3], priority in messages.items() if priority > 3}

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

Amsg.upper()

Bpriority

Cmsg

Dmessage

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names or not converting keys to uppercase.

The keys are uppercase message strings, values are priorities, and the loop variable is 'msg'.