Edge computing in SCADA in SCADA systems - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Benefits of Edge Computing in SCADA Systems

Which of the following is the primary benefit of using edge computing in SCADA systems?

A Reducing latency by processing data near the source

B Centralizing all data processing in a cloud server

C Increasing the amount of raw data sent to the central server

D Eliminating the need for local data storage

💡 Hint

Think about where data is processed to improve response time.

Edge computing processes data close to the source, reducing delay and improving real-time decision making in SCADA systems.

💻 Command Output

intermediate

Output of Edge Device Data Filtering Command

What is the output of this command run on an edge device filtering sensor data above threshold 50?

SCADA systems

sensor_data = [45, 55, 60, 40, 70]
filtered = [x for x in sensor_data if x > 50]
print(filtered)

A [45, 55, 60, 40, 70]

B [40, 45]

C [50, 55, 60, 70]

D [55, 60, 70]

💡 Hint

Look for numbers strictly greater than 50.

The list comprehension filters values greater than 50, so only 55, 60, and 70 remain.

🔀 Workflow

advanced

Correct Sequence for Edge Data Processing in SCADA

What is the correct order of steps for processing data on an edge device in a SCADA system?

A 2,1,4,3

B 1,4,2,3

C 1,2,4,3

D 1,3,2,4

💡 Hint

Think about collecting data first, then processing, then alerting, then sending.

Data is first collected, then filtered locally. If thresholds are exceeded, alarms trigger before sending data to the central server.

❓ Troubleshoot

advanced

Troubleshooting Edge Device Connectivity Issue

An edge device in a SCADA system is not sending data to the central server. Which command output indicates a network connectivity problem?

Assume the device runs a ping test to the server.

SCADA systems

ping 192.168.1.100

A Reply from 192.168.1.100: bytes=32 time=5ms TTL=64

B Request timed out.

C Ping statistics for 192.168.1.100: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)

D Ping: unknown host 192.168.1.100

💡 Hint

Look for output that shows no response from the server.

'Request timed out.' means the device cannot reach the server, indicating a network connectivity issue.

✅ Best Practice

expert

Best Practice for Data Security on Edge Devices in SCADA

Which option is the best practice to secure data on edge devices in SCADA systems?

A Encrypt data at rest and in transit using strong algorithms

B Store all data unencrypted for faster access

C Disable authentication to simplify device access

D Use default passwords for all edge devices

💡 Hint

Think about protecting data confidentiality and integrity.

Encrypting data both when stored and when sent protects it from unauthorized access and tampering.