Practice the Google adwords certification: Shopping advertising exam.
To become AdWords certified, you'll need to pass the AdWords Fundamentals exam and one of the other AdWords exams(Search Advertising, Display Advertising, Video Advertising, Shopping Advertising or Mobile Advertising)
This is only e-smartsolution's Adwords practice web. The Shopping Advertising exam you must answer 63 questions in 90 minutes needed 80 % of correct answer.
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