Concepts on IOT MCQ Quiz in मराठी - Objective Question with Answer for Concepts on IOT - मोफत PDF डाउनलोड करा

The correct answer is Modbus

Key Points

• Modbus:
  • This is the correct answer. Modbus is a widely used communication protocol in industrial automation and SCADA systems. It is known for its simplicity and ease of integration, making it a common choice for connecting devices in manufacturing plants, utilities, and other industrial settings.

Additional Information

• KNX:
  • KNX (Konnex) is a standardized communication protocol for smart homes and buildings. It is commonly used for home and building automation but is not as directly associated with industrial automation and SCADA systems.
• Zigbee:
  • Zigbee is a low-power, short-range wireless communication protocol primarily used in IoT applications. While it may find application in industrial IoT scenarios, it is not as specifically associated with traditional industrial automation and SCADA systems as Modbus.
• BACNet (Building Automation and Control Networks):
  • BACNet is a communication protocol specifically designed for building automation and control systems. While it is relevant to the control of building systems like HVAC, lighting, and security, it may not be as commonly associated with broader industrial automation and SCADA applications as Modbus.

The fundamental characteristics of the IoT are as follows:

1.  Interconnectivity: With regard to the IoT, anything can be interconnected with the global information and communication infrastructure.
2. Things-related services: In order to provide thing-related services within the constraints of things, both the technologies in physical world and information world will change.
3. Heterogeneity: The devices in the IoT are heterogeneous as based on different hardware platforms and networks. They can interact with other devices or service platforms through different networks.
4. Dynamic changes: The state of devices change dynamically, e.g., sleeping and waking up, connected and/or disconnected as well as the context of devices including location and speed. Moreover, the number of devices can change dynamically.
5. Enormous scale: The number of devices that need to be managed and that communicate with each other will be at least an order of magnitude larger than the devices connected to the current Internet.
6. Safety: Securing the endpoints, the networks, and the data moving across all of it means creating a security paradigm that will scale.
7. Connectivity: Connectivity enables network accessibility and compatibility. Accessibility is getting on a network while compatibility provides the common ability to consume and produce data.

• In an Internet of Things (IoT) ecosystem, two things are very important: The Internet and physical devices like sensors and actuators.

• The bottom layer of the IoT system consists of sensor connectivity and network to collect information.
• The main purpose of sensors is to collect data from the surrounding environment. Sensors, or ‘things’ of the IoT system, form the front end. These are connected directly or indirectly to IoT networks after signal conversion and processing. 

The correct answer is IEEE

Key Points

• IEEE (Institute of Electrical and Electronics Engineers):
  • IEEE is a major player in the standardization of IoT protocols. It has working groups dedicated to developing standards for various aspects of IoT, including communication protocols, security, and interoperability.

Additional Information

• IETF (Internet Engineering Task Force):
  • IETF is primarily focused on the development and promotion of Internet standards. While it plays a crucial role in standardizing protocols for the traditional Internet, it may not be the primary organization for IoT-specific standards.
• ISO (International Organization for Standardization):
  • ISO is a global body that develops and publishes international standards. While ISO covers a wide range of industries and technologies, including IoT, it typically adopts and incorporates standards developed by organizations like IEEE.
• IEC (International Electrotechnical Commission):
  • Similar to ISO, IEC is another international organization that develops standards for electrical and electronic technologies. It collaborates with other organizations, including IEEE, for the development of standards relevant to IoT.

The correct answer is option 1.

Concept:

Statement 1: A voicemail is an electronically recorded voice message that a caller leaves for the intended receiver to recover later.

True, A voicemail is a voice message that is electronically saved and left by a caller to be retrieved later by the intended receiver. Depending on the business phone system used by the recipient's firm, the saved message can be retrieved through phone, desktop, email, or other communication methods.

Statement 2: Voicemail includes capabilities such as a user interface that allows you to pick, play, and manage messages.

True, Voicemail includes functionality such as a user interface for choosing, playing, and organizing messages. There are options for the sender of the voicemail to play or deliver the message. There are additional alerting options that alert voicemail receivers to the presence of incoming messages.

Hence the correct answer is Both statement 1 and statement 2.

• A growing portion of IoT devices is created for consumer use, including connected vehicles, home automation, wearable technology, connected health, and appliances with remote monitoring capabilities which increases energy consumption.
• A large number of electronic devices are connected to the internet and hence there definitely b network congestion
• Privacy is a major concern with all those devices connected to the internet also security because all the devices may not have the password or strong passwords or good encryption algorithm. 

• Platform as a service (PaaS) is a category of cloud computing services that provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app.

• Platform as a service (PaaS) is one of the three main categories of cloud computing services, alongside software as a service (SaaS) and Infrastructure as a service (IaaS).
• The least amount of security is provided in Infrastructure as a service (IaaS), and the most in software as a service (SaaS).

• The Internet of things (IoT) is a system of interrelated computing devices, mechanical and digital machines provided with unique identifiers (UIDs) and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction.
• IoT system architecture, consists of devices, the Edge Gateway, and the Cloud.
• The lowest layer is made up of smart objects integrated with sensors.
• The sensors enable the interconnection of the physical and digital worlds allowing real-time information to be collected and processed.
• There are various types of sensors for different purposes. The sensors have the capacity to take measurements such as temperature, air quality, speed, humidity, pressure, flow, movement and electricity etc.

Notes:
No, of layers in IoT architecture might be different based on different Authors

The correct answer is Master In Slave Out

Key Points

• The MISO (Master In Slave Out) pin is a communication pin in SPI (Serial Peripheral Interface) protocol, where it is used to transmit data from the master device to the slave device. In the context of RFID modules, the MISO pin would be involved in the communication between the RFID reader (master) and RFID tag (slave).

The correct answer is 4

Key PointsA complex SCADA (Supervisory Control and Data Acquisition) system typically has 4 levels:

• Field Level: This level consists of sensors, actuators, and other devices that interact directly with the physical process being monitored and controlled.
• Remote Terminal Unit (RTU) Level: RTUs are located in the field and collect data from sensors, control actuators, and communicate with the higher levels of the SCADA system.
• Communication Network Level: This level provides the communication infrastructure for data transmission between the field level, RTUs, and the higher levels of the SCADA system.
• Master Station Level: The master station is the central point of control and monitoring for the SCADA system. It receives data from the field level and RTUs, processes it, and sends control commands back to the field.

Therefore, the correct answer is 4) 4.