Interview Q&A / Computer Networks
Computer Networks interview questions
What happens when you open a website, TCP vs UDP, DNS and HTTP.
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- How does TCP detect and recover from a lost packet?
The sender retransmits when its timer expires without an ACK, or sooner if it receives three duplicate ACKs, which signal that later segments arrived but one is missing. That second path is called fast retransmit.
IntermediateQuick answer1 min read