The transport layer provides flow control and sequencing.
Transport layer .....
physical layer
In the transport layer of the OSI model, sequence numbers are primarily associated with the Transmission Control Protocol (TCP). Sequence numbers are used to ensure the correct order of data segments and to facilitate reliable data transmission by allowing the receiver to reassemble the data in the correct sequence. Each byte of data in a TCP segment is assigned a unique sequence number, which helps in tracking the data flow and managing retransmissions in case of packet loss.
The Transport Layer and Data Layer can provide error detection and correction at the different levels of data transmission. Network layer can also correct errors if it detects them.
The application layer.
To reassemble the segments into data.
The median is the "middle" number in a set of data or a sequence. If you have the sequence 2,3,4,5,6 4 would be the median.
Frames are encapsulating packets. The data link layer makes framing and provide this service to the layer above layer "the network layer".
Frames are encapsulating packets. The data link layer makes framing and provide this service to the layer above layer "the network layer".
Frames are encapsulating packets. The data link layer makes framing and provide this service to the layer above layer "the network layer".
Application layer: Data Presentation layer: Data Session layer: Data Transport layer: Segment (TCP) or Datagram (UDP) Network layer: Packet Data Link layer: Frame Physical layer: Bit
Layer 2 (Data Link Layer) http://compnetworking.about.com/cs/internetworking/g/bldef_bridge.htm