Class Notes (783,221)
United States (300,565)
IST 233 (29)
Cobb (5)
Lecture

Standards

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School
Syracuse University
Department
Information Studies
Course
IST 233
Professor
Cobb
Semester
Spring

Description
-Why? -So diff. devices can communicate -Standard = protocol = set of rules -Layers -7 in OSI model -4 in internet model -5 in hybrid model -Application -Transport (TCP/IP standards) -Internet (TCP/IP standards) — packets -Data link (OSI standards) — frames -Physical (OSI standards) -OSI standards -Physical & data link layers -Includes ethernet -Ethernet -Invented 1974 by Robert Metcaffe @ Palo Alto Research Center -Also invented @ PARC: Windows & GUI -Originally bus topology -Changed to ring topology -Dominates at physical, data link layers -Fragmentation -Break data into smaller pieces -Occurs at transport layer -Each piece has a # -HTTP -Hyper Text Transfer Protocol -On the web -Port #80 -HTTPSecurity: port #443
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