I was asked about the production support related question , SlA for certain LEC,s , impedance , co- axial cable , RJ 45 cable , it's range .what does VPN mean how it works .wireless connectivity.MpLS, DHCP, DNS, telnet , TCP ip/ UDP. SMTP, OSI model layer, IP address types of iP address and it's range ..and so many questions which I don't remember right now..

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