CCNA - question

Author

question

sallama18

2001-11-05, 4:44 am

What are the 2 functions of the Data Link Mac layer?

1- Handles access to shared media
2- Manages protocol access to the physical network medium
3- Provides SAPs for higher level protocols
4- Allows multiple devices to uniquely identify one another on the data link layer

handles access to shared media what mean?

ý answered 2-4 but what mean 1? are these correct answers

strikeattack

2001-11-05, 9:50 am

The Physical layer handles access to shared media. The Datalink layer neither knows nor cares about shared media access. Shared media access, is of course, facilitated by CSMA/CD, which operates at the physical layer.

neuralfx

2001-11-10, 2:50 am

I would agree the answers are 2 & 4, actaully CSMA/C works at the DataLink Layer ..

http://www.dlink-intl.com/Technical...cb?OpenDocument
http://www.ciscoworldmagazine.com/w...cnetworks.shtml

-neural

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