Hot standby and warm standby in SCADA systems - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a hot standby system status check.

SCADA systems

if system_status == '[1]':
    activate_backup()

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

Astandby

Bactive

Cwarm

Dhot

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing 'warm' with 'hot' standby status.

The hot standby system is always running and ready to take over immediately, so the status to check is 'hot'.

2fill in blank

medium

Complete the code to set the warm standby system to sync mode.

SCADA systems

backup_system.mode = '[1]'

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Aactive

Bsync

Cstandby

Doffline

Attempts:

3 left

💡 Hint

Common Mistakes

Setting mode to 'active' instead of 'sync'.

Warm standby systems are synchronized but not fully active, so the mode should be set to 'sync'.

3fill in blank

hard

Fix the error in the code to correctly switch from warm standby to active system.

SCADA systems

if backup_system.status == 'warm':
    backup_system.status = '[1]'

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

Aactive

Bstandby

Chot

Doffline

Attempts:

3 left

💡 Hint

Common Mistakes

Setting status to 'hot' or 'standby' instead of 'active'.

To switch from warm standby to active, the status must be set to 'active'.

4fill in blank

hard

Fill both blanks to create a dictionary representing system states and their descriptions.

SCADA systems

system_states = {
    'hot': '[1]',
    'warm': '[2]'
}

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AFully running backup system

BBackup synchronized but not active

CBackup offline

DPrimary system active

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing descriptions of hot and warm standby.

'hot' means the backup is fully running and ready, while 'warm' means it is synchronized but not active.

5fill in blank

hard

Fill all three blanks to complete the function that switches system modes based on standby type.

SCADA systems

def switch_mode(standby_type):
    if standby_type == '[1]':
        return '[2]'
    elif standby_type == '[3]':
        return 'sync'

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

Ahot

Bactive

Cwarm

Dstandby

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing standby types or modes in the function.

If the standby type is 'hot', the mode switches to 'active'. If it is 'warm', the mode switches to 'sync'.