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Exam LX0-103 topic 4 question 7 discussion

Actual exam question from CompTIA's LX0-103
Question #: 7
Topic #: 4
[All LX0-103 Questions]

Which of the following settings for umask ensures that new files have the default permissions -rw-r----- ?

  • A. 0017
  • B. 0640
  • C. 0038
  • D. 0027
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Suggested Answer: D 🗳️

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linux_admin
2 years, 2 months ago
Here's why: The maximum permissions for files are 666 (read and write for all users). The default permissions for new files are calculated as 666 - umask. The value of 0027 means that the write permission is removed for both the group and others (i.e., 002), and the execute permission is removed for the owner (i.e., 007), so the resulting default permissions for new files will be 640 (-rw-r-----). Therefore, the correct answer is: D. 0027
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