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An IP address is assigned to each device (e.g. computer, printer) participating in a computer network that uses the Internet Protocol for communication. The protocol specifies that each IP packet must have a header which contains, among other things, the IP address of the sender.
For example, to do a reverse lookup of the IP address 8.8.4.4 the PTR record for the domain name 4.4.8.8.in-addr.arpa would be looked up, and found to point to dns.google. If the A record for dns.google in turn pointed back to 8.8.4.4 then it would be said to be forward-confirmed .
The Internet has become an integral part of living. As of 2016, 81.9% of American households have Internet access. [151] Additionally, 89% of American households with broadband connect via wireless technologies. [152] 72.9% of American households have Wi-Fi. Wi-Fi networks have also affected how the interior of homes and hotels are arranged.
IP was the connectionless datagram service in the original Transmission Control Program introduced by Vint Cerf and Bob Kahn in 1974, which was complemented by a connection-oriented service that became the basis for the Transmission Control Protocol (TCP). The Internet protocol suite is therefore often referred to as TCP/IP.
The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suite are the Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), and the Internet ...
Comcast is the largest provider of cable internet access in the United States, servicing 40% of the market in 2011. [15] As of July 26, 2018, Comcast has 26.5 million high-speed internet customers.
The Internet of things requires huge scalability in the network space to handle the surge of devices. [142] IETF 6LoWPAN can be used to connect devices to IP networks. With billions of devices [143] being added to the Internet space, IPv6 will play a major role in handling the network layer scalability.
The WINDS satellite is used to provide broadband Internet services to Japan and locations across the Asia-Pacific region. The satellite to provides a maximum speed of 155 Mbit/s down and 6 Mbit/s up to residences with a 45 cm aperture antenna and a 1.2 Gbit/s connection to businesses with a 5-meter antenna. [56]