The Importance of ISPs
Internet Service Providers provide Internet connectivity for home and business users. ISPs allow users to connect to the World Wide Web, which is built upon a complex series of protocols and technical specifications. Fortunately, the user does not need any technical knowledge to surf the Web. ISPs play a vital role in providing support to end users when things don't work as they should.
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Types
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Internet service providers fall into categories based on the type of service they offer. Telephone companies typically offer DSL and dial-up services which rely on a customer's phone line. Cable TV providers offer broadband Internet through the same cable lines used to deliver TV signals. Some ISPs provide satellite-based service that allows users to connect to the Internet by uplinking to an orbiting satellite.
Significance
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ISPs are responsible for providing Internet connectivity and maintaining the network infrastructure. Some ISPs also provide hardware and, in the case of cable Internet, handle the task of installing the service in a customer's home or office. In addition, the ISP provides technical support. ISPs also work with law enforcement from time to time, providing information about an account or IP address to the authorities when a user is suspected of a crime such as uploading or downloading pirated music or software.
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Features
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In addition to providing the Internet connection, hardware and technical support, most ISPs provide subscribers with an email address on the ISP's domain, as well as free filtering tools for "spam" or junk email. Some ISPs provide free Web hosting to subscribers and other perks. For example, Charter Cable offers free security programs that allow its subscribers to protect their computers against viruses and spyware.
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