Principles of Reliable Data Transfer
Explore the principles of reliable data transfer in the transport layer, focusing on how it addresses network imperfections such as corrupted, lost, duplicated, or reordered segments. Understand core mechanisms including checksums for error detection, retransmission timers for handling loss, and sequence numbers to identify duplicates. This lesson provides foundational knowledge to help you grasp the challenges and solutions involved in dependable communication across networks.
Network Layer Imperfections
The transport layer must deal with the imperfections of the network layer service. There are three types of imperfections that must be considered by the transport layer:
- Segments can be corrupted by transmission errors
- Segments can be lost
- Segments can be reordered or duplicated
Let’s look at some workarounds for these problems that the transport layer employs.
Checksums
The first ...