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數據機(modem,全名 modulator-demodulator):一部數據機會負責由互聯網服務供應商嗰度接收訊號,再將啲訊號轉化做用家部機能夠理解嘅訊號-等用家部機能夠由互聯網度接收數據;一部典型嘅廿一世紀初數據機會連接住三樣嘢-互聯網(可以係透過光纖)、用家部路由器、同埋能源[1]。
路由器(router):一部路由器負責嘅係將互聯網連接「分配」去一個網絡啲機嗰度;例如一個人想喺屋企上網,佢想將屋企部個人電腦同遊戲機駁上網,又想喺屋企用智能手機上網,而路由器做嘅嘢就係要負責由數據機嗰度攞數據,知道每件數據係邊部機要用嘅,再將啲數據傳送去件數據所屬嗰部機度[2]。下圖嘅 outlet
表示互聯網服務嘅來源。
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