Which protocol interacts asynchronously over UDP

Which fields of the TCP protocol are used by the sliding window algorithm?

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We said that a program should use UDP for a transport layer protocol because UDP has better control over when the data is sent to a section and when (the TCP). A. Why does the program have more power about which data is sent into a segment?

It is necessary to provide dependability and other TCP features on UDP in order for the QUIC protocol to be capable of providing HTTP True False 00.

Error Detection If error detection is provided at lower OSI layers, do you think that it is still important for UDP to provide this service, given that it is considered an "unreliable" protocol?