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software that crawls the web, follows links from one page to another while noting the content of each page crawled
software that examines search terms and uses indexes of pages related to those terms
name for 2 fundamental patters of digital information based on the presence and absence of a phenomenon. Presence and Absence
wide area network, designed to send info between 2 locations widely separated and not directly connected
connected to the internet, capable of broadcasting and receiving signals which the mobile computers can also send and receive
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