Wide Area Network (WAN)

For a wide area network or a van, it is a long distance connection. that unites the world together with a signal converter
such as a modem that helps to communicate and bring a local network to connect to a remote network such as the Internet network, banking network and airline networks, etc. The Wan network can be categorized as follows:

4.1 Private network
It is a network that is used only within an organization such as an organization that has branches in networking. To connect the head office and sub-branch by setting up a private network system. will have the advantage of being able to retain information and conceals secrets well It also controls the network and can expand the network to the desired point. Disadvantages if there is no continuous data transmission will cost a lot Compared to public traffic and if it is a data transmission between branches More channels must be provided. That may result in the inability to provide additional channels.

4.2 Public network (PDN: public data network)
public network or value-added network classified as a van network will have an organization (third party) who is responsible for the network and has leased communication channels to companies who want to build a network to help companies reduce costs because there is a third party to lighten the burden of expenses It is another network that people use very much. because the cost is low and can be used immediately There is no need to waste time setting up a new network. Including a variety of services to choose from. can choose to suit the job

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