An end user cannot log in to a page that provides an c-learning course. The authentication window will not launch. Which of the following is most likely the cause of this problem?

Question

Options

• APop-up blocking software has been enabled in the operating system.
• BThe browser has recently had its cookie cache cleared.
• CThe browser has recently had its browsing history cleared.
• DPop-up blocking software has been enabled in the Web browser.

• A
  5% (1)
• C
  5% (1)
• D
  90% (18)

Explanation

D is correct because authentication windows for web-based applications typically open as pop-ups, and browser-level pop-up blocking is the most direct and common cause of a login window failing to launch - browsers block pop-ups by default and must be configured to allow them for specific sites.

Why the others are wrong:

• A is incorrect because operating systems don't have built-in pop-up blocking for browsers; that functionality lives in the browser itself, not the OS.
• B is incorrect because clearing cookies affects stored session data and saved credentials, but it wouldn't prevent the login window from appearing in the first place.
• C is incorrect because browsing history is just a log of visited URLs - clearing it has no effect on whether a pop-up can open.

Memory tip: Think "closest to the problem." The authentication window is a browser pop-up, so the browser's own pop-up blocker is the most direct culprit. OS-level blocking doesn't exist for this, and cache/history clearing affects after login, not the window launch itself.

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