Edge computing in SCADA in SCADA systems - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to deploy an edge node in a SCADA system.

SCADA systems

deploy_edge_node --location [1] --connectivity stable

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

Acloud_data_center

Bbackup_office

Cfield_site

Dcentral_server

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing central_server or cloud_data_center as edge location.

The edge node should be deployed at the field_site to process data close to the source.

2fill in blank

medium

Complete the code to configure data filtering on the edge device.

SCADA systems

configure_filter --device_id 101 --filter_type [1]

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

Ano_filter

Braw_data

Cfull_stream

Dthreshold

Attempts:

3 left

💡 Hint

Common Mistakes

Using raw_data or full_stream sends too much data.

Using a threshold filter reduces data sent to the central system by only forwarding important changes.

3fill in blank

hard

Fix the error in the edge node update command.

SCADA systems

update_edge_node --node_id 55 --firmware_version [1]

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

Av1.2.3

B1.2.3

Cversion_1.2.3

Dupdate_latest

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'version_1.2.3' or 'update_latest' causes errors.

The correct firmware version format is v1.2.3 with a 'v' prefix.

4fill in blank

hard

Fill both blanks to set up edge data caching with correct parameters.

SCADA systems

setup_cache --cache_size [1] --cache_expiry [2]

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

A512MB

B24h

C30m

D1GB

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing too large cache size or too long expiry time.

Setting cache size to 512MB and expiry to 30m balances memory use and data freshness.

5fill in blank

hard

Fill all three blanks to define an edge processing rule for temperature data.

SCADA systems

define_rule --sensor [1] --condition [2] --action [3]

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

Atemp_sensor_7

B>

Csend_alert

Dhumidity_sensor_3

Attempts:

3 left

💡 Hint

Common Mistakes

Using humidity_sensor_3 or wrong condition/operator.

The rule triggers an alert when temp_sensor_7 readings are greater than a limit, so send_alert is the action.

Practice

1. What is the main benefit of using edge computing in SCADA systems?

easy

A. It processes data close to machines for faster response.

B. It stores all data in a central cloud server.

C. It eliminates the need for any network connections.

D. It replaces all human operators with robots.

Solution

1. Step 1: Understand edge computing role

   Edge computing means processing data near the source, like machines, not far away in the cloud.

2. Step 2: Identify main benefit in SCADA

   This local processing speeds up control and response times, which is critical for SCADA systems.

3. Final Answer:

   It processes data close to machines for faster response. -> Option A

4. Quick Check:

   Edge computing = faster local processing [OK]

Hint: Edge computing means processing near machines, not far away [OK]

Common Mistakes:

• Thinking edge computing stores all data centrally
• Assuming it removes network needs completely
• Confusing edge computing with full automation

2. Which of the following is the correct way to configure an edge device IP address in a SCADA system?

easy

A. ip address 192.168.1.10 255.255.255.0

B. set ip 192.168.1.10 mask 255.255.255.0

C. ipconfig 192.168.1.10 255.255.255.0

D. address ip 192.168.1.10/24

Solution

1. Step 1: Recognize standard IP config syntax

   In many SCADA edge devices, the command to set IP is 'ip address' followed by IP and subnet mask.

2. Step 2: Compare options

   ip address 192.168.1.10 255.255.255.0 matches this syntax exactly. Others use incorrect or non-standard commands.

3. Final Answer:

   ip address 192.168.1.10 255.255.255.0 -> Option A

4. Quick Check:

   Standard IP config command = ip address 192.168.1.10 255.255.255.0 [OK]

Hint: Look for 'ip address' followed by IP and mask [OK]

Common Mistakes:

• Using 'set ip' which is not standard
• Confusing with Windows 'ipconfig' command
• Using slash notation without proper command

3. Given this simplified SCADA edge script snippet:

data = [10, 20, 30]
processed = [x * 2 for x in data if x > 15]
print(processed)

What will be the output?

medium

A. [40, 60, 20]

B. [20, 40, 60]

C. [20, 30]

D. [40, 60]

Solution

1. Step 1: Understand list comprehension with condition

   The list comprehension multiplies each x by 2 only if x > 15.

2. Step 2: Apply condition to data list

   Data is [10, 20, 30]. Values > 15 are 20 and 30. Multiply each by 2 gives [40, 60].

3. Final Answer:

   [40, 60] -> Option D

4. Quick Check:

   Filter x > 15 then multiply by 2 = [40, 60] [OK]

Hint: Filter first, then multiply in list comprehension [OK]

Common Mistakes:

• Multiplying all values without filtering
• Including values <= 15 by mistake
• Mixing original and processed values

4. A SCADA edge device is not sending data to the central server. Which fix is most likely correct?

medium

A. Remove all sensors connected to the edge device.

B. Change the device IP to 0.0.0.0.

C. Restart the edge device and check network cables.

D. Disable the firewall on the central server permanently.

Solution

1. Step 1: Identify common network troubleshooting steps

   Restarting devices and checking cables are basic fixes for connectivity issues.

2. Step 2: Evaluate other options

   Changing IP to 0.0.0.0 disables communication, disabling firewall permanently is unsafe, removing sensors stops data generation.

3. Final Answer:

   Restart the edge device and check network cables. -> Option C

4. Quick Check:

   Basic network fix = restart and check cables [OK]

Hint: Restart and check cables first for network issues [OK]

Common Mistakes:

• Setting IP to 0.0.0.0 disables communication
• Disabling firewall permanently risks security
• Removing sensors stops data collection

5. You want to ensure a SCADA edge device processes sensor data locally and sends only alerts to the central server to reduce bandwidth. Which approach is best?

hard

A. Send all raw sensor data continuously to the central server for processing.

B. Configure the edge device to filter data and send alerts only when thresholds are exceeded.

C. Disable edge processing and rely on manual checks by operators.

D. Use the edge device only as a backup storage without processing.

Solution

1. Step 1: Understand bandwidth reduction via edge processing

   Processing data locally and sending only important alerts reduces network load.

2. Step 2: Evaluate options for best practice

   Configure the edge device to filter data and send alerts only when thresholds are exceeded. filters data locally and sends alerts only, which fits the goal. Others either send all data or disable processing, increasing bandwidth or losing benefits.

3. Final Answer:

   Configure the edge device to filter data and send alerts only when thresholds are exceeded. -> Option B

4. Quick Check:

   Local filtering + alert sending = bandwidth saving [OK]

Hint: Filter locally, send alerts only to save bandwidth [OK]

Common Mistakes:

• Sending all raw data wastes bandwidth
• Disabling processing loses edge benefits
• Using edge device only for storage misses control