Free CompTIA Linux+ practice test
10 real Linux+ questions, playable right now. No account, no card, no email gate. Every answer opens the full explanation: the concept, why the right option is right, and why each wrong option is wrong, cited to CompTIA’s own documentation.
Sample question 1 of 10
A technician tries to hard link a configuration file onto a second mounted volume and the command fails. Why can that link not be created?
Sample question 2 of 10
A server shows very little free memory but no performance problem. Which free output column says how much memory new applications can use without swapping?
Sample question 3 of 10
An auditor asks why /etc/shadow exists at all when /etc/passwd already lists accounts. What is the key property?
Sample question 4 of 10
A long-running job dies whenever the technician closes the terminal it was started from. Which signal is ending it?
Sample question 5 of 10
In the four-digit mode 4755, what does the leading 4 set?
Sample question 6 of 10
The same filename exists in /etc/sysctl.d and /usr/lib/sysctl.d with different values. With sysctl --system, which value wins and why?
Sample question 7 of 10
Access to a bastion must be limited to two named administrators, decided by the SSH daemon itself. Which directive does that?
Sample question 8 of 10
Which pair of tools maintains the dynamic linker's configuration and reports a binary's library dependencies?
Sample question 9 of 10
A blocking rule must take effect before an existing accept rule at position one of the INPUT chain. Which command form places it there?
Sample question 10 of 10
A minimal container has no /etc/resolv.conf at all, yet name resolution still works. What is the resolver doing?
Full Linux+ question bank coming
We’re writing the complete bank from the official objectives right now. Leave your email and we’ll tell you when it ships, nothing else, ever.
What this test covers
These 10 questions are drawn across the published exam blueprint rather than from one chapter: this set touches System Management, Troubleshooting, Security. Every question is original, written from the official objectives, and verified against a cited vendor page before it serves. None are recalled exam content, which is why the explanations can cite their sources.
A ten-question sample tells you where you stand, not whether you are ready. The full Linux+ bank is still being written, and everything published is free to answer in the meantime.
Keep reading
Linux+ practice questions
Free sample questions with the full explanation on every answer.
Linux+ exam objectives
The full official blueprint, with practice pages on covered objectives.
Linux+ passing score
The exact cut score, what kind of number it is, and the retake terms.
How hard is Linux+?
An honest difficulty read from the format, the clock and the weights.