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Which of the following is mandatory to run before running YSlow?

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Which of the following is mandatory to run before running YSlow? (a) WebPageTest (b) FireBug (c) Both WebPageTest and FireBug (d) Mozilla This question was addressed to me at a job interview. I need to ask this question from JavaScript with YSlow topic in portion Performance Measures in JavaScript of JavaScript Select the correct answer from above options JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

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Right answer is (b) FireBug Explanation: YSlow analyzes web page performance by examining all the components on the page, including components dynamically created by using JavaScript. It is mandatory to run FireBug before running YSlow.

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