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What was the first word attempted to be sent over the ARPANET in 1969, of which only the first two letters arrived?

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Correct answer: login

In October 1969, researchers at UCLA tried to type "login" to a computer at Stanford. The system crashed after they typed "l" and "o". A few hours later, they successfully completed the full transmission. This simple two-letter mishap marked the very first data exchange on ARPANET, the precursor to today's global network. Photo: ARPANET, Wikimedia Commons, Public domain.

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