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What is the vulnerability of XHR communications?

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What is the vulnerability of XHR communications?

(a) There is no vulnerability

(b) Skewing the results

(c) Registration and Skewing the results

(d) Registering the test results

I had been asked this question in unit test.

My question is taken from JavaScript with WebPageTest topic in chapter Performance Measures in JavaScript of JavaScript

1 Answer

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Correct choice is (c) Registration and Skewing the results

Easiest explanation: XMLHttpRequest (XHR) is an API in the form of an object whose methods transfer data between a web browser and a web server. XHR communications that may happen after page load could register as new activity and skew the test results.

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