10 Questions
What type of environment does TCP create?
Stream-oriented environment
What mechanism does TCP use to ensure safe arrival of data?
Acknowledgment mechanism
What are the two fields in the TCP segment header that refer to byte numbers?
Sequence number and acknowledgment number
What does TCP number all data bytes that are transmitted in a connection?
TCP numbers all data bytes (octets) transmitted in a connection.
Is the numbering of data bytes independent in each direction in TCP?
Yes
What does TCP do when it receives bytes of data from a process?
TCP stores them in the sending buffer and numbers them.
Does TCP necessarily start numbering data bytes from 0?
No
How does TCP assign a sequence number to each segment being sent?
After numbering the bytes, TCP assigns a sequence number to each segment being sent.
Explain the sequence number in TCP.
The sequence number in TCP refers to the byte number of data being sent in each direction.
Give an example of TCP sequence number assignment.
If the chosen arbitrary number is 1057 and 6000 bytes need to be sent, the bytes are numbered from 1057 to 7056.
Test your knowledge on TCP sequence numbers and how they are generated for segments. Learn about the concept of initial sequence number (ISN), incrementing sequence numbers, piggybacking of data and control information, and the logic behind defining sequence numbers for segments without user data.
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