What is web 2.0
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Its a new version of software after web 1.0
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Its all about web-apps making a interactive user experince.
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Its all about client side technologies Flash, Javascript, Silverlight
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Its all about using attractive designs in HTML Forms and using CSS
Web 2.0 is characterized by user interactivity, social features, and dynamic content. Option B correctly identifies it as interactive web applications. Option C is incorrect because client-side technologies existed before Web 2.0. Option D is superficial - CSS alone doesn't make something Web 2.0. Option A is wrong because Web 2.0 is not a software version but a paradigm shift.
Web 2.0 isn't a literal new software release; it's a term describing a shift in how the web is used — toward interactive, user-generated, collaborative experiences (social media, wikis, dynamic apps) rather than static, read-only pages. It's a conceptual/cultural shift rather than being tied to any one specific technology stack, which is why options centered on a particular tech (Flash/JS/Silverlight) or on visual styling (CSS/HTML forms) miss the point.