Question 1
An administrator runs `chmod 640 report.txt`. Which resulting permission set does this produce?
Show answer & explanation
Correct answer: A - rw-r----- (owner read/write, group read, others none)
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The LFCA exam has 60 questions and runs 1 hour 30 minutes.
These 10 free LFCA questions are organized by exam domain, so you can see how each part of the Linux Foundation Certified IT Associate blueprint is tested. Reveal the answer and explanation under each question.
An administrator runs `chmod 640 report.txt`. Which resulting permission set does this produce?
Correct answer: A - rw-r----- (owner read/write, group read, others none)
A service writes constantly growing log files that must survive reboots. According to the Filesystem Hierarchy Standard, which directory is the correct location for these files?
Correct answer: C - /var
In the output of `ls -l`, a file's permission field begins with `-rwsr-xr-x`. What does the `s` in the owner's permission set indicate?
Correct answer: A - The SUID bit is set, so the program runs with the file owner's privileges
A workstation cannot reach any network resource. Its IPv4 address is 169.254.18.42 with mask 255.255.0.0, which the user did not set manually. What is the MOST likely cause?
Correct answer: B - The client could not reach a DHCP server and self-assigned a link-local address
Users report a website is slow to load. An administrator wants to first confirm the remote server is reachable at all before investigating further. Which command is the BEST first step?
Correct answer: C - ping
A firewall must be configured to allow encrypted remote command-line administration of a Linux server. Which port should be permitted?
Correct answer: B - 22
An employee is suspended pending an investigation. The administrator must immediately prevent the account from being used to log in, but must NOT delete the account or its files. Which action accomplishes this?
Correct answer: D - Run `usermod -L` to lock the account
On a modern Linux system, which file stores users' encrypted (hashed) password data?
Correct answer: A - /etc/shadow
A process is frozen and ignores a normal termination request. Which signal forcibly terminates it, and cannot be caught or ignored by the process?
Correct answer: C - SIGKILL (9)
A company rents virtual machines from a cloud provider and installs and maintains its own operating system, runtime, and applications on them. The provider manages only the physical hardware, virtualization, storage, and networking. Which cloud service model is this?
Correct answer: A - IaaS - Infrastructure as a Service
The LFCA exam also covers these domains. Drill them in the full free practice test:
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