To check the validity of your training manuals, cross reference the CCO. Information here is less likely (IMHO) to contradict.
Cisco says: Upper-layer processes use IEEE 802.2 services through service access points (SAPs). The IEEE 802.2 header begins with a destination service access point (DSAP) field, which identifies the receiving upper-layer process. In other words, after the receiving node's IEEE 802.2 implementation completes its processing, the upper-layer process identified in the DSAP field receives the remaining data. Following the DSAP address is the source service access point (SSAP) address, which identifies the sending upper-layer process. http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/sdlcetc.htm http://www.cisco.com/warp/public/90/22.html All the best Phil -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Morgan Hansen Sent: Thursday, July 04, 2002 7:49 AM To: [EMAIL PROTECTED] Subject: What to look for... [7:48092] On my latest CCNA tryout (yes, i funked but it shall NOT happen again! :-(), I remember something about DSAP. So obviosly I went hope catching up on it, so that I would know the answers to DSAP related problems. What im having a relly hard time figuring out here, reading the CNAP curriculum, Wendel Odom`s and Wave books, is wether DSAP is 802.2 or 802.3?? In the Odom book it says, I quote; when IEEE created 802.2, they saw the need for e protocol type field. They called it DSAP, and anyone could. Then, on the next page it reads; 802.2 SAP and SNAP type fields; 802.3 EO DSAP EO SSAP CTL IPX DATA 802.3 802.3 AA DSAP AA SSAP 03 CTL OUI 0800 Type IP DATA 802.3 Then nothing? So, what im wondering is When being asked on the exam wether DSAP uses 802.2 or 802.3 I havent got the **** idea what to answer?? Cause as far as I know, it uses both! Clearly it does so? I just couldnt choose one out of the other just like that could i? Well I guess I could, but I have no idea of what to look for (being of interrest in a question like this anyways?) When Cisco asks me quest like this, im wondering Are Cisco interrested in finding out if I know that IEEE saw the need for a protocol type field ie created it, or more in depth like what kind of fields it uses? It cant be the last one here, cause then they wouldnt form the question like they did, so? -Please help me out on this one techgods- -Morgan (Taking one day at a time) mailto:[EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=48098&t=48092 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
