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Protocols for Conversations
Suppose someone walks up to you and
says, “Knock-knock.” The commonly-expected response to such
a comment is, “Who’s there?”. This is an example of
a simple protocol. If you had answered, “The sky is blue,”
rather than “Who’s there?” communication between you
and the other party would probably break down pretty quickly. The other
party might wait silently, hoping that you’ll get around to saying
“Who’s there?” so that they can tell their joke, or might
look at you strangely and walk away, deciding they’d be better
off telling their “Knock-knock” joke to someone else. On
the other hand, if you answer with the, “Who’s there?”
comment that is expected, the other person proceeds with “Ida Mae”,
and waits for you to reply, “Ida Mae who?” before replying,
“I’da maybe better learn more about TCP/IP before taking the
Network+ exam.”
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CertiGuide for Network+ (http://www.CertiGuide.com/netplus/) on CertiGuide.com
Version 1.0 - Version Date: November 7, 2004
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