15 Questions
Which field in the TCP segment structure is used for congestion notification?
E
Which field in the TCP segment structure is used for connection management?
RST
Which field in the TCP segment structure is used for flow control?
ACK
Which state does the client transition to after calling clientSocket.close() in the TCP connection?
FIN_WAIT_1
What is the value of ssthresh after dupACKcount reaches 3?
cwnd/2
What is the purpose of the TIMED_WAIT state in the TCP connection?
To allow the client to still send data
What is the value of cwnd after retransmitting a missing segment and receiving a duplicate ACK?
ssthresh + 3
Which of the following is true about TCP congestion control?
TCP uses additive increase and multiplicative decrease to adjust sending rate
During TCP slow start, the congestion window (cwnd) is initially set to _______?
1
What is the purpose of the ssthresh variable in TCP congestion control?
To switch from exponential increase to linear increase in cwnd
What is the purpose of the dupACKcount variable in TCP congestion control?
The dupACKcount variable is used to track the number of duplicate ACKs received by the sender in TCP congestion control.
What is the formula to calculate the new value of cwnd after receiving a duplicate ACK?
cwnd = cwnd + MSS
What is the purpose of the ssthresh variable in TCP congestion control?
The ssthresh variable is used to store the value of the congestion window (cwnd) at the time congestion is detected and reduced.
What is the formula to calculate the new value of ssthresh after dupACKcount reaches 3?
ssthresh = cwnd/2
What are the possible states for a TCP connection in the Transport Layer?
The possible states for a TCP connection in the Transport Layer are: ESTAB (established), FIN_WAIT_1, FIN_WAIT_2, CLOSE_WAIT, TIMED_WAIT, LAST_ACK, and CLOSED.
Test your knowledge of TCP segment structure with this quiz. Learn about the 32-bit structure, ACK, length, checksum, congestion notification, TCP options, connection management, source and destination port numbers, sequence and acknowledgement numbers, and more.
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