A web server tracks unique visitors using cookies, but allows multiple tabs from the same browser. Which effect on reported unique visitor count does this overcounting cause?

💡 Explanation

The web server counts each tab as a separate unique visitor due to separate cookie instances, even though they originate from the same user. This leads to an inflated visitor count, because the inclusion-exclusion principle is not correctly applied, therefore the visitor count is an overestimation, rather than an accurate representation.

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