Why architecture determines system scalability in SCADA systems - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the main component that handles data flow in a SCADA system.

SCADA systems

class SCADAController:
    def __init__(self):
        self.data_handler = [1]()

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

ADataHandler

BDataAnalyzer

CDataCollector

DDataProcessor

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a component that only collects or analyzes data, not handles it.

The DataHandler is the main component responsible for managing data flow in SCADA systems, so it fits best here.

2fill in blank

medium

Complete the code to add a method that scales the system by adding new nodes.

SCADA systems

def add_node(self, node):
    if len(self.nodes) < [1]:
        self.nodes.append(node)

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

A100

B5

C10

D50

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a number too small to scale effectively.

The system is designed to scale up to 50 nodes to maintain performance and reliability.

3fill in blank

hard

Fix the error in the method that balances load across nodes.

SCADA systems

def balance_load(self):
    total_load = sum(node.load for node in self.nodes)
    average = total_load [1] len(self.nodes)
    for node in self.nodes:
        node.load = average

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A/

B//

C*

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using integer division which may truncate the average.

Using / performs floating-point division to calculate the average load correctly.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps node IDs to their status if the load is below threshold.

SCADA systems

node_status = {node.id: node.status for node in self.nodes if node.load [1] [2]

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A<

B75

C<=

D50

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operators or threshold values.

The condition node.load < 75 filters nodes with load below 75.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps uppercase node names to their load if load is above threshold.

SCADA systems

high_load_nodes = { [1]: [2] for node in self.nodes if node.load [3] 60 }

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Anode.name.upper()

Bnode.load

C>

Dnode.status

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong keys or values in the dictionary.

This comprehension maps uppercase node names to their load when the load is greater than 60.