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+ random facts:

Q: How many identical acks need to be received for fast retransmit to occur?

The DUPACK threshold is a configurable parameter. Linux uses a threshold of 2 (sysctl: net.ipv4.tcp_reordering).

Q: Name one of the men described as "The Father of the Internet."

Apparently, Leonard Kleinrock is also one of the fathers of the Internet: http://www.cs.ucla.edu/~lk/.

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