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The question that is not revealed clearly from the movies (or maybe I missed it). Is Skynet a single supercomputer or a distributed net of computers, that just coordinate their actions, but do not subordinate to each other?
The first one seems more appropriate for military command, but the second variant is much harder to destroy, since the elimination of one node will not interrupt the action of the others. So, any guesses, which one is used by Skynet?
It's a distributed system.
In T3: Rise of the Machines, the closing scene states quite clearly:
By the time Skynet became self-aware it had spread into millions of computer servers across the planet. Ordinary computers in office buildings, dorm rooms; everywhere. It was software; in cyberspace. There was no system core; it could not be shutdown.
I disagree with Williham Totland's answer.
The answer is "BOTH yes and no".
There are Three DISTINCT things called "Skynet", which is what causes the confusion:
The original virus (which wasn't actually called "Skynet"). That was what Williham Totland's quote referred to. That one had no central core/system.
General Brewster's military AI system. That one DID have a core and a central system. THAT project was code-named "Skynet" by military/Brewster.
A resultant malevolent AI entity which was produced when the virus in #1 infected the military AI, which as per T3 was brought online for the purpose of fighting off the virus that was taking over machines in DoD.
After the Judgement Day, that resulting entity was ALSO called "Skynet".
Most likely that entity retained BOTH characteristics of its two progenitors - a central core of the military AI, but also cloud-like abilities of the virus.
It depends on which source you have in mind. In T3, as noted above, Skynet is a network of some kind. In T2, it is a single piece of hardware located inside NORAD HQ in Cheyenne Mountain.
One day the computer designed to automatically control the U.S. nuclear strike force would become “alive,” and Skynet’s first sentient decision would be that mankind was obsolete. It would launch a first strike, riding out the firestorm of retaliation to follow, safe in a hardened underground complex in Cheyenne Mountain....
- Terminator 2: Judgment Day (official novelization)
