00479nam a22001817a 4500 11849 11849 210114b 2016 ||||| |||| 00| 0 eng d 9788184077155 621.382 KAT Katre, J. S. Mumbai University Internet and voice communication Pune Tech-Max Publications 2016 12+6-39p. OSI Model DNS in the internet Internetworking Layer BK 0 0 ddc 0 621_382000000000000_KAT 0 NFIC 14092 MU MU GEN 2021-01-14 621.382 KAT MPCG0247 2025-03-17 BK Column - 65