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The Advanced Research Projects Agency Network (ARPANET) was the first wide-area packet-switched network with distributed control and one of the first computer networks to implement the TCP/IP protocol suite. Both technologies became the technical foundation of the Internet.
Army Research, Development and Engineering Command (RDECOM) Army Research Laboratory (ARL) Army Armament Research, Development and Engineering Center (ARDEC) Engineer Research and Development Center (ERDC) U.S. Army Test and Evaluation Command (ATEC) Army Medical Research and Material Command (USAMRMC)
During the late 1960s, with the transfer of these mature programs to the Services, ARPA redefined its role and concentrated on a diverse set of relatively small, essentially exploratory research programs. The agency was renamed the Defense Advanced Research Projects Agency (DARPA) in 1972, and during the early 1970s, it emphasized direct energy ...
Within the Homeland Security Advanced Research Projects Agency, IDD develops technologies to improve and increase the United States' strategic preparedness response to natural and man-made threats through situational awareness, emergency response capabilities, and critical infrastructure protection. [1]
In 1958, the first Advanced Research Projects Agency, or ARPA, was created in response to an unanticipated surprise—the Soviet Union's successful launch of Sputnik on October 4, 1957. The ARPA model was designed to anticipate and pre-empt such technological surprises.
The name originally was the acronym for the Advanced Research Projects Agency (ARPA), the funding organization in the United States that developed the ARPANET, the precursor of the Internet. It was the first domain defined for the network in preparation for a hierarchical naming system for the delegation of authority, autonomy, and responsibility.
The Packet Radio Network (PRNET) was a set of early, experimental mobile ad hoc networks whose technologies evolved over time. It was funded by the Advanced Research Projects Agency (ARPA). Major participants in the project included BBN Technologies, Hazeltine Corporation, Rockwell International's Collins division, and SRI International.
Homeland Security Advanced Research Projects Agency (HSARPA) is a part of the Science and Technology Directorate at the United States Department of Homeland Security. Much like DARPA in the Department of Defense, HSARPA is tasked with advanced projects to advance the technology needed to protect the US.