Question

Communication Protocols that are currently used in IoT are:
A. HTTP/Rest,
B. IPv6,
C. TCP,
D. MAC.
The Communication Protocols used at each layer of IoT Network Stack: Application Layer, Transport Layer, Network Layer, Link Layer, respectively, in a sequence are

• A. A, B, C, D
• B. A, C, B, D
• C. B, A, D, C
• D. C, B, D, A

Hint:

Remember the basic TCP/IP model layers from top to bottom: Application (e.g., HTTP, FTP, MQTT), Transport (TCP, UDP), Network/Internet (IP), and Link/Physical (e.g., Ethernet, Wi-Fi, MAC).

Answer 1

The Correct Option is B

Step 1: Map each protocol to its corresponding layer in the TCP/IP or IoT network stack.

A. HTTP/Rest: Hypertext Transfer Protocol and its RESTful architecture are used by applications to communicate. This operates at the Application Layer.
B. IPv6: The Internet Protocol version 6 is responsible for addressing and routing packets between networks. This operates at the Network Layer (or Internet Layer).
C. TCP: The Transmission Control Protocol provides reliable, ordered, and error-checked delivery of a stream of octets between applications. This operates at the Transport Layer.
D. MAC: The Media Access Control protocol operates as a sublayer of the Data Link Layer. It controls access to the physical transmission medium. This is part of the Link Layer.

Step 2: Arrange the protocols in the requested sequence. The question asks for the sequence: Application, Transport, Network, Link. Based on the mapping in Step 1, the sequence is: HTTP/Rest (A), TCP (C), IPv6 (B), MAC (D). The correct sequence is A, C, B, D.