2. Purpose of the Transport Layer
Segmenting upper-layer application data.
Establishing end-to-end operations.
Sending segments from one end host to another end host.
Ensuring flow control provided by sliding windows.
Ensuring reliability provided by sequence numbers and
acknowledgments.
5. TCP and UDP
Physical
Data link
Network
Transport
TCP UDP
Builds Connections
Uses Sequence Numbers
Reliable (Uses ACKs)
Connectionless
Best-Effort Delivery
Unreliable
TCP or UDP
IP Addresses
MAC Addresses