what's SDLC, X.25, HDLC

[Guest]

Please tell me what is X.25, SDLC, HDLC, connectivity. Thanks in advance

 

[Guest]

Those are network protocols... I cant remember which one is what.. but try here: <A HREF="http://www.whatis.com" target="_new">http://www.whatis.com</A>

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Be and let others be as well!
<b>The Dark-Knight</b>

 

[Guest]

They are older mainframe/midrange network protocols. Hardly used these days, but were quite sufficient in the time of text based computing.

 

[Guest]

Thanks Dark-knight