identifying the different applications, tracking individual communications, data segmentation, segment reassemble, flow control, error checking and recovery
Protocols involve in Layer 4
Transmission Control Protocol and User Datagram Protocol
Ports are assigned by
Internet Assigned Numbers Authority
TCP Header fields
Source port, destination port, sequence number, acknowledgement number, data offset, reserved, flag, window size, checksum, urgent, option, application layer data
port numbers identify which _ of application layer is in use
service
Sender side: Segmentation, Receiver side: _
Reassemble
flow control which enables the receiver to not be overwhelm is perform only by _
tcp
flow control is done using what field in tcp header?
windowsize
Error checking
tcp and udp
recovery
tcp
which field indicate if specific data is received of not