What does APH mean in INTERNET

ARPANET stands for Advanced Research Projects Agency Network. It was the first wide-area computer network created in 1969 by the United States Department of Defense. The network was designed as a way to connect computers located at different sites and allow them to communicate with each other.

The original purpose of ARPANET was to provide a reliable and secure communication system for military and research organizations, which could be used during times when traditional telephone lines were not available or secure. However, over time, it evolved into a general-purpose networking platform that allowed people to send information from one location to another with relative ease.

ARPANET originally covered most of North America, but has expanded worldwide since then. Nowadays it comprises thousands of machines distributed across some 200 countries around the world.

ARPANET works by allowing users on different computers and networks to share information through a packet-switch coordinated network. Each message sent from one machine is broken up into multiple packets before being sent, so that they can be reassembled at the other end. This allows data to travel more quickly and reliably than if it were simply sent all at once via one connection.

The Transmission Control Protocol (TCP) and Internet Protocol (IP) are two protocols that each serve an important purpose in modern networking technology, but their roles are quite distinct from each other and from those of ARPANET's packet-switching protocol. Whereas TCP/IP transmits data between individual computers on a single network, ARPANET provides an internetwork where connections between different local area networks location can be made in order for data to travel much further distances than can be accomplished within the LANs themselves.

An advantage of using an ARPANET connection is its highly reliable transmission service due to its reliance on packet switching which allows for transmission even if there are breaks in parts of the route along the way; if any part fails, others can take over without interruption – this helps prevent transmission failures caused by low signal strength or poor connections elsewhere in the system. Additionally, since multiple routes exist all at once, messages reaching their destination take shorter paths than would otherwise be possible with regular line routing methods; this makes delivery faster and more efficient overall as well as better equipped with security measures such as encryption techniques utilized when needed by both source and target points along its route.

An advantage of using an Arpanet type connection is that communications sent through this network are highly secure through various encryption techniques utilized depending on what type of information needs protection when travelling between source and destination point such as passwords or confidential business documents. Plus because data is broken down into smaller packets before being sent out independently then reassembled upon reception it's virtually impossible for someone intercepting these packages along its way having direct access nor any hint about content being transmitted properly.

One disadvantage is that this style of network requires a lot more hardware compared to other types of network configurations like Local Area Networks (LANs). Additionally due to complexity involved with setting up such kind of architecture maintenance costs tend being higher than what would normally incur with regular line routing methods as well resulting in longer periods until resolving malfunctions occurring within these systems.

Arpanet was initially developed by DARPA (Defense Advanced Research Projects Agency) founded by U S Department Of Defense back in 1969 seeking establish instantaneous communications over large distances.