Private Networks That Use a Public Network,usually the Internet,to Connect

Q82: A common connection device that connects computers

Q83: Telephones have always been digital devices.

Q84: _ is an international standard widely adopted

Q85: Peer-to-peer networks are less stable than client-server

Q86: Ethernet is a long-distance wireless communications connection.

Q88: A type of wired communications technology used

Q89: A communications medium is a channel; there

Q90: If you have one computer,you need firewall

Q91: What is the primary purpose of the

Q92: A gateway is an interface device permitting