Why modern trends reshape industrial automation in SCADA systems - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the SCADA system service.

SCADA systems

systemctl [1] scada-service

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

Astart

Brestart

Cstatus

Dstop

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'stop' instead of 'start' will turn off the service.

The start command launches the SCADA service so it begins running.

2fill in blank

medium

Complete the code to check the status of the SCADA system.

SCADA systems

systemctl [1] scada-service

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

Aenable

Bstart

Cstatus

Ddisable

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'start' will try to launch the service instead of checking it.

The status command shows if the SCADA service is running or stopped.

3fill in blank

hard

Fix the error in the command to restart the SCADA system service.

SCADA systems

systemctl [1] scada-service

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

Areload

Bstop

Cstatus

Drestart

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'stop' alone will turn off the service without restarting it.

The restart command stops and then starts the service again, applying new settings.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps sensor IDs to their status if active.

SCADA systems

sensor_status = {sensor_id: [1] for sensor_id, [2] in sensors.items() if status == 'active'}

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Astatus

Cvalue

Dstate

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names causes errors or empty results.

The dictionary comprehension uses status as the value and unpacks the second item as status from the sensors dictionary.

5fill in blank

hard

Fill all three blanks to filter and map device names to their IPs if online.

SCADA systems

online_devices = [1]([2]: info['ip'] for [3], info in devices.items() if info['status'] == 'online')

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Adict

Bname

Cdevice

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'list' instead of 'dict' changes the output type.

The comprehension creates a dictionary (dict) mapping device name to IP, iterating over device and info pairs.