Name the 2 protocols are in wan technology?





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hi friends i have a problem.plz solve this. i am working some where and i have the number of swtitch.once my project manger says that we are going to exapnd our number of employ so plz attech an another switch.i asked to my jr network engineer that take a witch and implemnt on that n/w,as he implement the switch on that n/w.thats network get down, plz tell me what is the reason of that.

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