How does NETTCP enhance data acknowledgment?

How does NETTCP enhance data acknowledgment?

• A. By increasing the size of acknowledgment packets
• B. By implementing cumulative and selective acknowledgments
• C. Using independent acknowledgments only
• D. By reducing the number of acknowledgments sent

Answer: (B)

NETTCP enhances data acknowledgment primarily through the implementation of cumulative and selective acknowledgments. This approach allows for greater efficiency in handling network traffic and ensures that data transmission occurs smoothly. Cumulative acknowledgments indicate that all data up to a certain point has been received successfully, providing a straightforward way to confirm receipt. This helps the sender understand how much data has been successfully transmitted without the need for individual acknowledgments for each packet. Selective acknowledgments, on the other hand, allow the receiver to inform the sender about specific packets that have been received successfully, while also indicating which packets may have been lost or need retransmission. This method is particularly beneficial in high-latency networks, as it reduces the need to retransmit entire sequences of packets when only a few are missing, enhancing overall network efficiency and throughput. The combination of these acknowledgment techniques significantly improves data transfer reliability and performance compared to simpler acknowledgment methods, allowing for better management of lost or out-of-order packets within a data stream.

NETTCP enhances data acknowledgment primarily through the implementation of cumulative and selective acknowledgments. This approach allows for greater efficiency in handling network traffic and ensures that data transmission occurs smoothly.

Cumulative acknowledgments indicate that all data up to a certain point has been received successfully, providing a straightforward way to confirm receipt. This helps the sender understand how much data has been successfully transmitted without the need for individual acknowledgments for each packet.

Selective acknowledgments, on the other hand, allow the receiver to inform the sender about specific packets that have been received successfully, while also indicating which packets may have been lost or need retransmission. This method is particularly beneficial in high-latency networks, as it reduces the need to retransmit entire sequences of packets when only a few are missing, enhancing overall network efficiency and throughput.

The combination of these acknowledgment techniques significantly improves data transfer reliability and performance compared to simpler acknowledgment methods, allowing for better management of lost or out-of-order packets within a data stream.