 Ndị na-eso ya kwesịrị ịghọta: Common Network terminology TCP IP Addressing and Routing DNS Methodology Ịntanetị na-ekwurịta okwu Ihe ndị a na-emekarị nke WAN Wide Area Network na mpaghara LAN Mpaghara Area Network, Ụlọ Ọrụ Data Center Server redundancy concepts. 