The local host is using three client sessions.
The local host is using web sessions to a remote server.
The local host is listening for TCP connections using public addresses.
The local host is using well-known port numbers to identify the source ports.
The local host is performing the three-way handshake with 192.168.1.101:1037.
13
53
80
1024
1728
Sequencing
Flow control
Acknowledgments
Source and destination
Acknowledgement of data delivery
Minimal delays in data delivery
High reliability of data delivery
Same order data delivery
Create a Layer 1 jam signal
Reach a timeout and resend the data that needs to be acknowledged
Send a RESET bit to the host
Change the window size in the Layer 4 header
Session establishment
Segment retransmit
Data transfer
Session disconnect
3431
2
3
6
1850
3475
To synchronize equipment speed for sent data
To synchronize and order sequence numbers so data is sent in complete numerical order
To prevent the receiver from being overwhelmed by incoming data
To synchronize window size on the server
To simplify data transfer to multiple hosts
The packets will not be delivered.
The packets will be retransmitted from the source.
The packets will be delivered and reassembled at the destination.
The packets will be delivered and not reassembled at the destination.
0 to 255
256 to 1022
0 to 1023
1024 to 2047
49153 to 65535
UDP
IP
TCP
HTTP
DNS
Flow control
Low overhead
Connectionless
Connection-oriented
Sequence and acknowledgements
Sequence numbers
Session establishment
Window size
Acknowledgments
Destination logical address
Source physical address
Default gateway address
Source port
To indicate the correct router interface that should be used to forward a segment
To identify which switch ports should receive or forward the segment
To determine which Layer 3 protocol should be used to encapsulate the data
To enable a receiving host to forward the data to the appropriate application
To allow the receiving host to assemble the packet in the proper order
Identifies the destination network
Identifies source and destination hosts
Identifies the communicating applications
Identifies multiple conversations between the hosts
Identifies the devices communicating over the local media
Encapsulation
Flow control
Connectionless services
Session establishment
Numbering and sequencing
Best effort delivery
Application
Presentation
Session
Transport
Network
This is a UDP header.
This contains a Telnet request.
This contains a TFTP data transfer.
The return packet from this remote host will have an Acknowledgement Number of 43693
This is a TCP header.
The two applications exchange data.
TCP initializes the sequence numbers for the sessions.
UDP establishes the maximum number of bytes to be sent
The server acknowledges the bytes of data received from the client.
Host1 sends a segment with the ACK flag = 0, SYN flag = 0 to Host2.
Host1 sends a segment with the ACK flag = 1, SYN flag = 0 to Host2.
Host1 sends a segment with the ACK flag = 1, SYN flag = 1 to Host2.
Host2 sends a segment with the ACK flag = 0, SYN flag = 1 to Host1.
Host2 sends a segment with the ACK flag = 1, SYN flag = 0 to Host1.
Host2 sends a segment with the ACK flag = 1, SYN flag = 1 to Host1.
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