Which of the following is an example of a datalink layer protocol used for wireless communication?a) TCPb) Bluetoothc) HTTPd) IP

To determine which of the options is an example of a datalink layer protocol used for wireless communication, we need to understand the purpose of the datalink layer and the characteristics of each option.

The datalink layer is responsible for the reliable transfer of data between two nodes on a network. It ensures that data is transmitted without errors and provides mechanisms for flow control and error detection.

Now let's analyze each option:

a) TCP (Transmission Control Protocol) is a transport layer protocol, not a datalink layer protocol. It is responsible for establishing a reliable connection between two devices and ensuring the ordered delivery of data packets.

b) Bluetooth is indeed a datalink layer protocol used for wireless communication. It is commonly used for short-range wireless connections between devices such as smartphones, tablets, and computers.

c) HTTP (Hypertext Transfer Protocol) is an application layer protocol used for communication between web browsers and web servers. It operates at a higher layer than the datalink layer and is not specifically designed for wireless communication.

d) IP (Internet Protocol) is a network layer protocol that provides the addressing and routing functions necessary for data to be transmitted across networks. It is not a datalink layer protocol.

Based on this analysis, the correct answer is b) Bluetooth, as it is an example of a datalink layer protocol used for wireless communication.