Question: In modern implementations of TCP, a retransmission occurs if the retransmission timer expires or ________ duplicate ACK segments have arrived.
Answer:
- In modern implementations of TCP, a retransmission occurs if the retransmission timer expires or three duplicate ACK segments have arrived.
- Correct! In modern TCP implementations, a retransmission occurs if either the retransmission timer expires or three duplicate ACK segments (ACKs for the same sequence number) have arrived. This is known as fast retransmit and is used to avoid unnecessary timeouts and improve performance.
MCQ: In modern implementations of TCP, a retransmission occurs if the retransmission timer expires or ________ duplicate ACK segments have arrived.
Correct Answer:
A. one
Explanation:
- In modern implementations of TCP, a retransmission occurs if the retransmission timer expires or three duplicate ACK segments have arrived.
- Correct! In modern TCP implementations, a retransmission occurs if either the retransmission timer expires or three duplicate ACK segments (ACKs for the same sequence number) have arrived. This is known as fast retransmit and is used to avoid unnecessary timeouts and improve performance.
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Related Questions
- 1. In TCP, ________ retransmission timer is set for an ACK segment.
- 2. In TCP, there can be ______ RTT measurement(s) in progress at any time.
- 3. We need to multiply the header length field by _______ to find the total number of bytes in the TCP header.
- 4. In TCP, urgent data requires the urgent pointer field as well as the URG bit (to be set) in the _______ field.
- 5. In TCP, if the ACK value is 200, then byte _______ has been received successfully.
- 6. In TCP, the _______ timer prevents a long idle connection between two TCPs.
- 7. In TCP, the _______ timer is needed to handle the zero window-size advertisement.
- 8. In TCP, Karn's algorithm is used in calculations by the _______ timer.
- 9. In TCP, a special segment called a probe is sent by a sending TCP when the _______ timer goes off.
- 10. __________ control refers to the mechanisms and techniques to keep the load below the capacity.
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