An automatic repeat request (ARQ) can be used to make sure that data is received free oferrors. It can use a positive or negative acknowledgement method to do this.Explain how an ARQ operates using a positive acknowledgement method

An Automatic Repeat Request (ARQ) using a positive acknowledgement method operates in the following way:

1. The sender transmits a data packet to the receiver.

2. Upon receiving the data packet, the receiver checks for any errors that may have occurred during transmission. This is typically done using error detection codes that are included in the packet.

3. If the data packet is error-free, the receiver sends a positive acknowledgement back to the sender. This acknowledgement indicates that the packet was received correctly.

4. Upon receiving the positive acknowledgement, the sender knows that the packet was successfully received and can proceed to send the next data packet.

5. If the sender does not receive an acknowledgement within a certain time frame (known as the timeout period), it assumes that the packet was lost or corrupted during transmission. In this case, the sender retransmits the same data packet.

6. This process continues until all data packets have been successfully received by the receiver.

The positive acknowledgement method of ARQ ensures that data is received free of errors by requiring acknowledgement of successful receipt for each packet. If an acknowledgement is not received, the data is retransmitted, ensuring that no data is lost or corrupted during transmission.