Cloud Computing Architecture and Virtualization Principles
Infrastructure as a Service (IaaS)
Infrastructure as a Service (IaaS) provides virtual servers, storage, networking, and computing resources through the cloud. The provider manages hardware, virtualization, and networking, while the customer manages the Operating System (OS), applications, middleware, and data. Resources are available on-demand with elastic scaling and pay-per-use billing.
- Major Advantages: Low hardware cost, quick deployment, disaster recovery, high availability, and flexibility.
5G Architecture and Functional Components
NG-RAN: Radio Access Network
- gNB Functions: Handles radio scheduling, coding, MIMO, HARQ, and QoS enforcement.
- CU/DU Split: The gNB is divided into a Centralized Unit (CU) for non-real-time tasks and a Distributed Unit (DU) for real-time tasks via the F1 interface.
- Connectivity: Connects to the 5G Core via the NG interface and to other gNBs via the Xn interface for handovers.
5G Core: Service-Based Architecture
- AMF: Manages mobility, connections, and authentication.
- SMF: Handles session management, IP
IoT Systems: Raspberry Pi, Arduino, and Home Automation
Raspberry Pi and Hardware Interfacing
Raspberry Pi is a compact and low-cost computer widely used for Internet of Things (IoT) and embedded system applications. It supports operating systems like Linux and programming languages such as Python. General-Purpose Input/Output (GPIO) pins are used to connect external devices like LEDs, sensors, and motors.
LED and LDR Interfacing Experiments
In the LED interfacing experiment, an LED is connected to the GPIO pin of the Raspberry Pi through a resistor. Using
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Understanding Interoperability in IoT
Interoperability in the Internet of Things (IoT) refers to the ability of different IoT devices, platforms, applications, and communication systems to exchange, understand, and use data effectively. It enables devices from various vendors to work together seamlessly, which is critical given the billions of connected smart devices.
Levels of IoT Interoperability
- Device Interoperability: Communication using common protocols.
- Network Interoperability: Interaction between
IoT Communication Protocols and Wireless Technologies
MQTT Protocol and Architecture
The MQTT Protocol is a lightweight messaging protocol designed for M2M (Machine-to-Machine) IoT communication. It operates on a publish–subscribe model, meaning there is no direct device-to-device communication.
- Key Features: Low power consumption, low bandwidth requirements, high scalability, reliability (offering QoS 0, 1, and 2), and security via TLS.
- Architecture:
- Client: A device acting as either a publisher or a subscriber.
- Broker: A central server that manages
IoT Architecture, M2M Systems, and Arduino Programming
Q1: IoT Definition, Vision, and Technology
Definition: The Internet of Things (IoT) refers to a network of physical devices embedded with sensors, software, and connectivity to collect and exchange data over the internet without human intervention.
Vision of IoT
- Every physical object connected to the internet
- Smarter environments (homes, cities, and industries)
- Data-driven decisions in real time
- Reduced human effort through automation
Sources of IoT
Sources include sensors, RFID tags, smartphones, wearables,
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