Transport Layer l Flashcards
Transport layer
Responsible for ensuring that data packets arrive accurately
How does the transport layer work?
Splits up data into smaller units and passes onto network layer
What’s the relationship between the transport and network layer?
Transport Layer: provides logical communication between processes
Network Layer: provides logical communication between hosts
Process-Level Addressing
Allows transport layer to identify and differentiate between multiple processes running on single device
How process-level addressing works
Network layer identifies host and transport layer assigns a port number to each process
Multiplexing (Sender Side)
Allows data from multiple processes to be combined and sent over a single transport layer
Demultiplexing (Receiver Side)
Transport lay looks at port numbers and directs each portion of data to correct application
Integrity Checking
Ensures that the data received is accurate and hasn’t been corrupted during transmission
How does integrity checking work?
Transport layer uses error detection mechanisms to verify data integrity. If errors are detected, protocols request retransmission
Connection Management (Establishment and Termination)
Allows for setup and teardown of connection between sender and receiver if using connection-oriented protocol
How does connection management work?
A connection needs to be established before data transfer begins and terminated afterwards
Acknowledgments and Retransmissions
Ensures reliable data transfer by acknowledging received data and retransmitting missing/corrupted data
How Acknowledgments and Retransmissions work
Receiver send acknowledgments to confirm receipt data. If sender doesn’t receive an ACK, it retransmit the data
Flow Control
Manages the rate of data transmission to prevent overwhelming the receiver
