Internet Protocols-1.2 network edge

1.2.1 A closer look at network structure: network edge:邊緣網絡 hosts: clients and servers servers often in data centers part of the network with the users and computers 邊緣網絡包括匯聚層網絡和接入層網絡的一部分或全部， 是接入用戶的最後

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