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Operational Acceptance is used to conduct operational readiness (pre-release) of a product, service or system as part of a quality management system. OAT is a common type of non-functional software testing, used mainly in software development and software maintenance projects. This type of testing focuses on the operational readiness of the system to be supported, and/or to become part of the production environment. Hence, it is also known as operational readiness testing (ORT) or Operations readiness and assurance (OR&A) testing. Functional testing within OAT is limited to those tests which are required to verify the non-functional aspects of the system.
What is Occupational Acceptance used for?
A: unanswerable

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Furthermore, Apple had created too many similar models that confused potential buyers. At one point, its product lineup was subdivided into Classic, LC, II, Quadra, Performa, and Centris models, with essentially the same computer being sold under a number of different names. These models competed against Macintosh clones, hardware manufactured by third parties that ran Apple's System 7. This succeeded in increasing the Macintosh's market share somewhat, and provided cheaper hardware for consumers, but hurt Apple financially as existing Apple customers began to buy cheaper clones which cannibalized the sales of Apple's higher-margin Macintosh systems, yet Apple still shouldered the burden of developing the Mac OS platform.
What was the hardware manufactured by third parties for Apple's System 7 known as?
A: Macintosh clones

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New Haven's best-known geographic features are its large deep harbor, and two reddish basalt trap rock ridges which rise to the northeast and northwest of the city core. These trap rocks are known respectively as East Rock and West Rock, and both serve as extensive parks. West Rock has been tunneled through to make way for the east-west passage of the Wilbur Cross Parkway (the only highway tunnel through a natural obstacle in Connecticut), and once served as the hideout of the "Regicides" (see: Regicides Trail). Most New Haveners refer to these men as "The Three Judges". East Rock features the prominent Soldiers and Sailors war monument on its peak as well as the "Great/Giant Steps" which run up the rock's cliffside.
In addition to the New Haven Harbor, what additional natural element is a prominent geographic feature of the area, flanking the northeast and northwest boundaries?
A: basalt trap rock ridges

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Most of the Estonian Defence Forces surrendered according to the orders of the Estonian government, believing that resistance was useless and were disarmed by the Red Army. Only the Estonian Independent Signal Battalion showed resistance to Red Army and Communist militia "People's Self-Defence" units in front of the XXI Grammar School in Tallinn on 21 June. As the Red Army brought in additional reinforcements supported by six armoured fighting vehicles, the battle lasted several hours until sundown. Finally the military resistance was ended with negotiations and the Independent Signal Battalion surrendered and was disarmed. There were two dead Estonian servicemen, Aleksei Mannikus and Johannes Mandre, and several wounded on the Estonian side and about ten killed and more wounded on the Soviet side.
What was the name of the single unit that didn't surrender?
A:
the Estonian Independent Signal Battalion