Why alarm management is critical in SCADA systems - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define an alarm threshold in a SCADA system.

SCADA systems

alarm_threshold = [1]

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A100

B50

Calarm

Dthreshold

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of a number

Setting threshold too high or too low

The alarm threshold is set to 50 to trigger alerts when values exceed this limit.

2fill in blank

medium

Complete the code to check if the sensor value exceeds the alarm threshold.

SCADA systems

if sensor_value [1] alarm_threshold:

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A<

B==

C<=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using less than operator

Using equality operator instead of comparison

The condition checks if the sensor value is greater than the alarm threshold to trigger an alarm.

3fill in blank

hard

Fix the error in the alarm notification function call.

SCADA systems

send_alarm_notification([1])

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Aalarm_threshold

Bnotify

Csensor_value

Dsend_alarm

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the threshold instead of the sensor value

Passing function names as arguments

The function should send the current sensor value that triggered the alarm, not the threshold or function names.

4fill in blank

hard

Fill both blanks to create a dictionary that maps alarm names to their severity levels.

SCADA systems

alarms = { [1]: [2] }

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A'HighTemp'

B'Critical'

C'LowPressure'

D'Warning'

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-string keys or values

Mixing alarm names and severity levels

The dictionary maps the alarm name 'HighTemp' to its severity level 'Critical'.

5fill in blank

hard

Fill all three blanks to filter alarms with severity 'Critical' and create a list of their names.

SCADA systems

critical_alarms = [[1] for [2], [3] in alarms.items() if [4] == 'Critical']

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Aname

Bseverity

Calarms

Ditem

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names

Not filtering by severity correctly

This list comprehension extracts alarm names where the severity is 'Critical' from the alarms dictionary.