Linux Essentials (010-160) — Question 43

What is the UID of the user root?

Answer options

• A. 1
• B. -1
• C. 255
• D. 65536
• E. 0

Correct answer: E

Explanation

The correct answer is E, as the UID for the root user in Unix/Linux systems is 0. The other options represent UIDs that are not associated with the root user; for example, 1 is typically reserved for the 'daemon' user, while negative values and values beyond the typical range are not valid UIDs for standard users.