Reliable Data Transfer #education #datamigration

What is the role of timers in reliable data transfer protocols?
Timers ensure retransmission of packets if acknowledgments are not received in time.

How does end-to-end reliability differ from link-layer reliability?
End-to-end reliability focuses on the entire path, while link-layer reliability operates between adjacent nodes.

What is cumulative acknowledgment in reliable data transfer?
Cumulative acknowledgment confirms receipt of all packets up to a certain sequence number.

How do duplicate acknowledgments help in reliable data transfer?
Duplicate acknowledgments signal potential packet loss, prompting retransmissions.

What is the function of a transport-layer protocol in reliable data transfer?
The transport layer provides mechanisms like error detection, retransmission, and flow control.

How does reliable data transfer handle variable network delays?
It uses adaptive timers and retransmission strategies to accommodate delays.