JNTU MCA 2018 INTERNET OF THINGS Previous Question Paper (June/July - 2018 - R15)

IoT communication APIs are programming interfaces that allow IoT devices, applications, and cloud platforms to exchange data and control signals. They provide a standardized way for heterogeneous devices to interact over a network.

Key types include:

• RESTful APIs: Based on HTTP/HTTPS, these use standard methods like GET, POST, PUT, and DELETE to manage resources, making them ideal for web-based IoT integration.
• WebSocket APIs: Provide full-duplex communication channels over a single TCP connection, enabling real-time data streaming between devices and servers.
• MQTT APIs: Lightweight messaging protocols designed for resource-constrained devices, using a publish-subscribe model to minimize bandwidth and power usage.

IoT systems management is essential to ensure the reliability, security, and efficiency of large-scale deployments. As the number of connected devices grows, manual intervention becomes impossible.

The need arises from:

• Configuration Management: Automating the setup, provisioning, and updating of firmware or software across thousands of devices.
• Fault Management: Proactively detecting, diagnosing, and resolving device failures or connectivity issues to minimize downtime.
• Security Management: Monitoring for unauthorized access, managing authentication credentials, and deploying security patches to protect against vulnerabilities.
• Performance Monitoring: Tracking device health, resource utilization, and data throughput to optimize overall system performance.