LPIC-2 Exam 202 (Linux Engineer) — Question 90

In order to prevent all anonymous FTP users from listing uploaded file names, what security precaution can be taken when creating an upload directory?

Answer options

• A. The directory must not have the execute permission set.
• B. The directory must not have the read permission set.
• C. The directory must not have the read or execute permission set.
• D. The directory must not have the write permission set.
• E. The directory must not contain other directories.

Correct answer: B

Explanation

The correct answer is B because without read permission, anonymous users cannot list the files in the directory. Option A is incorrect as not having execute permission alone does not prevent file listing. Option C is too restrictive as it also denies execute permission, which is unnecessary for this scenario. Option D is incorrect because write permission is unrelated to listing files. Option E does not address the permissions needed to secure the directory.