Introduction To Industry 4.0 And Industrial Internet Of Things Week 4 NPTEL Assignment Answers 2025

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✅ Subject: Introduction To Industry 4.0 And Industrial Internet Of Things (iot 4.0)
📅 Week: 4
🎯 Session: NPTEL 2025 July-October
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NPTEL Introduction To Industry 4.0 And Industrial Internet Of Things Week 4 Assignment Answers 2025

1. Which of the following components of cybersecurity focuses on maintaining the availability, integrity, and confidentiality of business data?

a. Network Security
b. Operational Security
c. Information Security
d. End-user Education

Answer : See Answers

2. Network security combines multiple layers of defenses at which locations?

a. At the edge and in the network.
b. Only within the network’s core.
c. Only at the edge of the network.
d. At individual user devices only

Answer :

3. Why are IIoT Security Standards required, especially when diverse systems and equipment are integrated on a smart factory floor?

a. To reduce the cost of implementing IIoT.
b. Because leaving security to individual IIoT implementers is dangerous and every weak line puts the whole factory at risk.
c. To ensure that only new systems are implemented, not legacy ones.
d. To increase the complexity of the smart factory floor.

Answer :

4. In IIoT, where are sensors and actuators primarily used compared to traditional automation?

a. Only for critical elements
b. Almost everywhere to control, enhance, and optimize various functions
c. Exclusively for emergency systems
d. To replace human operators entirely

Answer :

5. In the mining industry, how do sensor networks with gas sensors, strata monitoring devices, and RFID tags contribute to safety and efficiency?

a. They only help in tracking miners’ locations.
b. They are primarily used for communication between miners.
c. They replace the need for human inspection.
d. They provide early disaster warning, monitor working conditions, and help locate miners.

Answer :

6. Who coined the term ”Industrial Internet”?

a. IBM
b. General Electric (GE)
c. Intel
d. Siemens

Answer : See Answers

7. What are the three key elements of the Industrial Internet?

a. Big Data, Cloud, and AI
b. Intelligent Machines, Advanced Analytics, People at Work
c. Sensors, Processors, and Actuators
d. Software, Hardware, and Middleware

Answer :

8. In a milk packaging unit, how is flow measured?

a. Using a thermometer
b. Via a spinning impeller that sends signals when milk flows
c. With a smart camera
d. Using a GPS module

Answer :

9. Which component is responsible for converting analog data to digital data in a smart sensor node?

a. Processor
b. Memory
c. ADC
d. DAC

Answer :

10. In the context of the agriculture industry, what is the primary use of smart sensors like soil and water sensors?

a. To track real-time objects.
b. To predict driver destinations.
c. To prevent patient falls in hospitals.
d. For accurate use of fertilizers and determining crop health.

Answer :

11. Fill in the blanks. Thames Water’s smart water management system, as an example of Industrial Process 4.0 operation efficiency, primarily benefits from_________________ .

a. Data monetization and pay-per-use models.
b. Sensor-based equipment status monitoring and failure detection.
c. Augmented Reality-based problem diagnosis.
d. Controlled power generation using weather forecasts.

Answer : See Answers

12. Fill in the blanks. Interoperability in the design philosophy of IIoT for Industrial Processes refers to _______ .

a. Empowering smart objects to reduce human intervention.
b. Facilitating communication between heterogeneous objects.
c. Virtualization of objects and digital models.
d. Enabling smart objects to take independent decisions.

Answer :

13. In the 5C architecture of Cyber-Physical Systems, what does the ”Conversion Layer” do?

a. Interprets sensors data for information
b. Stores backup data
c. Converts analog signal to mechanical action
d. Synchronizes robotic arms

Answer :

14. State true or false. In the case of spear phishing, the attackers send thousands of deceitful emails that resemble actual emails from credible sources while email phishing attacks are targeted to a specific person or organization to obtain sensitive information.

a. True
b. False

Answer :

15. Which of the following statements is incorrect about the CIA triad in network and computer system security?

a. Confidentiality ensures that information is concealed and protected from unauthorized access.
b. Integrity refers to maintaining the accuracy and consistency of data, and can always be violated by intentional attacks.
c. Availability is compromised when authorized users are denied access to information due to network attacks like DDoS.
d. None of these

Answer : See Answers

NPTEL Introduction To Industry 4.0 And Industrial Internet Of Things Week 4 Assignment Answers 2024

1. What does Cybersecurity protect?

a. Only physical infrastructure
b. Only software
c. Hardware, software, and data
d. Only company policies

✅ Answer :- c
Explanation: Cybersecurity protects all digital assets including hardware, software, networks, and data from cyber threats.

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2. What is the focus of Network Security?

a. Only securing physical buildings
b. Protecting network architecture from unauthorized access and improper use
c. Protecting only the company CEO’s information
d. Solely focused on securing paper documents

✅ Answer :- b
Explanation: Network security ensures secure communication and access control within networked systems.

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3. What does the CIA Triad in Cybersecurity stand for?

a. Confidentiality, Integrity, Availability
b. Costing, Integrity, Assets
c. Company, Internet, Availability
d. Communication, Information, Assessment

✅ Answer :- b
Explanation: CIA Triad is the core model of cybersecurity ensuring data privacy (C), accuracy (I), and accessibility (A).

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4. What are the key differences between IIoT and traditional Automation?

a. No significant differences
b. Ubiquitous sensing, advanced analytics, IT tools, and methodologies
c. Only in terms of cost
d. Limited to the type of machinery used

✅ Answer :- d
Explanation: IIoT uses real-time data, cloud, analytics, and smart connectivity, unlike traditional automation.

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5. What are the benefits of deploying sensors and actuators in IIoT?

a. Limited to academic purposes
b. To sell more software
c. To control, enhance, and optimize various functions
d. To reduce operational efficiency

✅ Answer :- a
Explanation: Sensors and actuators enable real-time monitoring and control, improving productivity and safety.

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6. How does IIoT benefit the mining industry?

a. By relaxing safety standards
b. Increasing disaster risks
c. Early disaster warning
d. Ignoring carbon footprint metrics

✅ Answer :- c
Explanation: IIoT helps in predictive maintenance and disaster detection, improving safety in mining.

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7. What is the Third Wave in GE’s industrial level innovation?

a. The Industrial Intranet
b. The Digital Revolution
c. The Industrial Revolution
d. The Industrial Internet

✅ Answer :- a
Explanation: GE’s “Third Wave” refers to the Industrial Internet, combining intelligent machines with analytics.

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8. Scarcity of non-renewable sources of energy pose a significant challenge with respect to energy consumption for the future smart industries and industrial internet?

a. True
b. False

✅ Answer :- c
Explanation: Dependency on non-renewables poses a sustainability challenge for IIoT-powered smart industries.

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9. What was the negative effect of the Industrial Revolution?

a. Increased life expectancy
b. Environmental pollution
c. Rise in literacy
d. Technological advancement

✅ Answer :- a
Explanation: While it brought progress, the Industrial Revolution led to increased pollution and environmental harm.

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10. Which of the following is not one of the three key elements of the Industrial Internet?

a. Intelligent machines
b. Advanced analytics
c. People at work
d. Social Networking

✅ Answer :- a
Explanation: Social networking is not a core element of the Industrial Internet; the focus is on machines, data, and people.

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11. How is a smart sensor defined according to IEEE 1451 standard?

a. Sensor with large storage capacity
b. Sensor with standardized physical connection for communication
c. Sensor that operates independently
d. Sensor without the need for a power supply

✅ Answer :- b
Explanation: IEEE 1451 defines smart sensors as those that communicate using standardized protocols.

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12. What is the purpose of the MRAA library in Intel IIoT devices?

a. High-level gaming interface
b. Large data analysis
c. Cloud storage management
d. Low-level communication in GNU/Linux platform

✅ Answer :- d
Explanation: MRAA provides low-level hardware I/O access for embedded programming on Intel platforms.

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13. What is a key aspect of the design philosophy for IIoT in industrial processes?

a. Facilitating communication between heterogeneous objects
b. Prioritizing manual control over automated systems
c. Limiting data interoperability
d. Reducing smart object autonomy

✅ Answer :- c
Explanation: IIoT promotes interoperability between diverse systems, enabling smart communication.

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14. What is a feature of the Autonomous Pull Economy in Industrial Process 4.0?

a. High waste generation
b. Manual data processing
c. Limited resource optimization
d. End-to-end automation facility

✅ Answer :- a
Explanation: In Industry 4.0, processes are driven by automated demand sensing and fulfillment, minimizing human intervention.

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15. Considering the future architecture of the smart Industrial plant, which among the following layers is responsible for autonomous decision making, machine learning and decision support system?

a. Connection Layer
b. Conversion Layer
c. Cyber Layer
d. Cognition Layer

✅ Answer :- c
Explanation: The Cognition Layer enables AI-based decision-making and learning capabilities in smart industry systems.