I would say that would be theoretically correct, except for TCP isn't an OSI standard, it is part of the Internet standard, which is (If I remember correctly from the Data Communications classs), only 4 layers:
INTERNET STACK 4. APPLICATION 3. TCP 2. IP 1. HARDWARE/NETWORK But since TCP isn't an OSI standard, it's comparative point would be the transport layer, and therefore that would be the point at which ports are used. Kenneth -----Original Message----- Date: Mon, 01 Sep 2003 14:45:51 -0600 From: Michael Ryan Byrd <[EMAIL PROTECTED]> Subject: Re: [uug] service access point To: BYU Unix Users Group <[EMAIL PROTECTED]> Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=iso-8859-1 > It's the OSI model name of something like port 80 for http access. Or > port 23 for telnet. It's the point through which you access a service. Right-o, so if a question were "What OSI layer uses 'service access points'?", the answer would be the TRANSPORT layer, because the TCP header (and TCP is in the TRANSPORT layer) contains source and destination ports. Correct? (Or as the BFG would say, "Is that right or left?") ____________________ BYU Unix Users Group http://uug.byu.edu/ ___________________________________________________________________ List Info: http://uug.byu.edu/cgi-bin/mailman/listinfo/uug-list
