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Comment Re:So why is it used in Windows? (Score 2) 665

Microsoft calls this the "secure attention sequence." I have heard that older PCs' keyboard interfaces would directly generate an interrupt on reception of ctrl+alt+del, but I can't find anything to back that up.

Supposedly ctrl+alt+del was chosen to be the SAS in Windows NT because no existing app used it as a key combination.

Comment Circuit switching is (almost) dead (Score 2) 347

It seems pretty clear to me that circuit switched networks will be phased out in the next 10 years. AT&T has petitioned the FCC to transition to an all-IP network by 2018. At that point, you might have virtual circuit-switched connections, but with none of the advantages of real circuit-switched networks or the cost savings of IP. Existing copper lines were never intended to carry much bandwidth, so while they're still used for last-mile access in many cases (e.g. DSL), going forward it seems like coax or fiber are going to be the only competitive technologies. I believe some telcos are already replacing twisted pair bundles damaged by Hurricane Sandy with fiber.

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