Free Linux Foundation Certified Engineer (LFCE) Exam Questions and Answers
Linux Foundation Certified Engineer (LFCE) is one of the Linux Foundation tests covered here. The Linux Foundation administers these exams on behalf of different projects rather than owning one scheme — the Kubernetes credentials come from CNCF, the LFC ones from the Linux Foundation itself, and others from Hyperledger, FinOps and RISC-V. The final letter usually marks seniority, with A for associate and S or E for practitioner, and the leading letters name the technology.
Looking for Linux Foundation Certified Engineer (LFCE) exam dumps or ExamTopics questions? These practice questions cover the same ground with verified answers and explanations, a downloadable PDF and a full practice test, kept current as Linux Foundation updates the exam.
Last updated: October 27, 2026
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Question #1
Node1 runs RHEL 9. Kernel 5.14.0-503.el9.x86_64 was just installed and is now the default boot entry, but it has not been validated for the application. The previously installed kernel 5.14.0-427.el9.x86_64 is still present. Which command makes the 5.14.0-427 kernel the persistent default for all future boots?
Correct answer: A
Explanation
grubby --set-default changes the saved default boot entry persistently. grub2-reboot sets the entry for the next boot only, so the 503 kernel would return afterward. grub2-install rewrites the bootloader and dracut rebuilds an initramfs, and neither changes which entry is the default.
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Question #2
A new web application was deployed on node2 and is configured to accept TLS connections on TCP port 8443. Which command verifies that a process is listening on that port and shows the name and PID of the process?
Correct answer: A
Explanation
-t selects TCP, -l limits output to listening sockets, -n skips name resolution, -p adds the owning process, and sport matches the local port. -u would show UDP sockets and -x shows UNIX domain sockets. Filtering on dport matches the remote port of connections, so a listener on 8443 would not be reported.
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Question #3
On node1, Apache httpd 2.4 serves /var/www/html/admin, and no compatibility modules such as mod_access_compat are loaded. Access to this directory must be limited to clients in the 10.20.30.0/24 network. Which directive, placed inside the <Directory "/var/www/html/admin"> block, completes the task?
Correct answer: B
Explanation
In Apache 2.4, mod_authz_core and mod_authz_host provide Require ip for address-based access control. Allow from is 2.2 syntax that needs mod_access_compat. Require host expects a hostname or domain, and Require not ip would block exactly the clients that should be admitted.
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Question #4
Users report that node1 is slow, and monitoring shows high %iowait. Which command reports the kilobytes read and written per second by each process, sampled at 5-second intervals?
Correct answer: B
Explanation
pidstat -d reports per-process disk I/O (kB_rd/s and kB_wr/s). iostat -x gives extended statistics per block device, and sar -b gives system-wide I/O totals, so neither identifies the process. pidstat -r reports memory and page-fault statistics per process.
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Question #5
On host node1, run a container named web in the background from the image docker.io/library/nginx:1.27. Host port 8080 must forward to port 80 in the container, and Podman must restart the container automatically if it exits. Which command completes the task?
Correct answer: B
Explanation
-p takes hostport:containerport, so 8080:80 publishes container port 80 on host port 8080, and --restart=always restarts the container when it exits. Reversing the ports would publish container port 8080 instead. --expose only documents a port and does not create a host mapping, and --restart=no disables restarts.
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Question #6
A review of sar data shows that application memory on node1, excluding page cache, grows by about 150 MiB each week. Node1 has 16 GiB of RAM, and application memory is currently 11.2 GiB. The team plans to add RAM when application memory reaches 90 percent of physical memory. Using 1 GiB = 1024 MiB, in about how many weeks will the threshold be reached?
Correct answer: B
Explanation
90 percent of 16 GiB is 14.4 GiB, or 14,745.6 MiB. Current use is 11.2 GiB, or 11,468.8 MiB, leaving 3,276.8 MiB. Dividing by 150 MiB per week gives about 21.8, so roughly 22 weeks. Using 100 percent of RAM gives 33 weeks, and ignoring current usage gives 98.
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Question #7
On host ntp1, chronyd already synchronizes with the upstream pool servers listed in /etc/chrony.conf. Hosts in the 10.20.0.0/16 network must be able to use ntp1 as their time source. Which line added to /etc/chrony.conf completes the task?
Correct answer: B
Explanation
The allow directive tells chronyd to act as an NTP server for clients in the listed network. The server and peer directives define time sources that ntp1 itself polls, and they take a host name or address, not a network. The cmdallow directive only controls which hosts may use chronyc to send monitoring and control commands, so clients could still not obtain time.
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Question #8
Host app1 runs RHEL with the realmd and sssd packages installed. It must be enrolled in the Active Directory domain corp.example.com so that domain users can be resolved and authenticated through SSSD. The domain administrator account is Administrator. Which command completes the task?
Correct answer: D
Explanation
realm join enrolls the host in the domain, creates the computer account and writes the SSSD and Kerberos configuration. realm discover only queries the domain and can install missing packages, and realm permit controls which accounts may log in after the host has already joined. sssctl domain-status reports the state of a domain that is already configured.
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Question #9
On host build1, the spec file ~/rpmbuild/SPECS/tool.spec is complete and the source tarball is in ~/rpmbuild/SOURCES. A binary RPM must be built from it, and no source RPM should be produced. Which command completes the task?
Correct answer: A
Explanation
The -bb option runs the build stages through packaging and writes only the binary RPM. -bs creates only the source RPM, -bp stops after the %prep stage, and -ba builds both the binary and the source RPM, which the task rules out.
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Question #10
From workstation ws1, port 5433 on the local loopback interface must forward through the SSH server bastion to port 5432 on db1.internal. Which command completes the task?
Correct answer: D
Explanation
The -L option creates a local port forward: connections to the local port are carried through the SSH server to the specified destination host and port. -R does the reverse, opening a listening port on the remote server, and -D creates a dynamic SOCKS proxy with no fixed destination. -J is a jump host option for reaching an SSH server and does not forward a database port.
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Discussion
Explain your reasoning, not just the letterOther Linux Foundation certifications
- KCNA: Kubernetes and Cloud Native Associate (opens in a new tab)
- LFCS: Linux Foundation Certified System Administrator (opens in a new tab)
- Linux Foundation Certified DevOps Engineer (LFCD) (opens in a new tab)
- FinOps Certified Practitioner (FCP) (opens in a new tab)
- Hyperledger Certified Service Provider (HCSP) (opens in a new tab)
- Hyperledger Certified Developer (HCD) (opens in a new tab)
- FinOps Certified Professional (FCP) (opens in a new tab)
- HFCP: Hyperledger Fabric Certified Practitioner (opens in a new tab)
- Certified Kubernetes Application Developer (CKAD) (opens in a new tab)
- Certified Kubernetes Security Specialist (CKS) (opens in a new tab)
- Certified Kubernetes Administrator (CKA) (opens in a new tab)
- LFCA: Linux Foundation Certified IT Associate (opens in a new tab)
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FAQ
Learn More: https://training.linuxfoundation.org/certification
- Q1: What is the Linux Foundation Certified Engineer (LFCE) exam?
- A: Linux Foundation Certified Engineer (LFCE) is a Linux Foundation certification exam. Judging by the questions in our bank, it concentrates on linux, directory and permissions.
- Q2: What topics does the Linux Foundation Certified Engineer (LFCE) exam cover?
- A: Questions in our Linux Foundation Certified Engineer (LFCE) bank cluster around linux, directory and permissions. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for Linux Foundation Certified Engineer (LFCE)?
- A: Work through the Linux Foundation Certified Engineer (LFCE) practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real Linux Foundation Certified Engineer (LFCE) exam questions?
- A: They are drawn from officially released past questions and from community members who have sat Linux Foundation Certified Engineer (LFCE). Answers are verified and updated weekly.
- Q5: Where do I register for the Linux Foundation Certified Engineer (LFCE) exam?
- A: Register through Linux Foundation directly at https://training.linuxfoundation.org/certification. Exampractice is not affiliated with Linux Foundation and does not administer the exam.
- Q6: Is there a free Linux Foundation Certified Engineer (LFCE) sample?
- A: Yes. Every Linux Foundation Certified Engineer (LFCE) page shows a free sample of real questions. Upgrading opens the full bank and the practice test.
- Q7: What are Linux Foundation Certification Exams?
- A: Linux Foundation Certification Exams validate your expertise in using and managing Linux and open-source technologies. These certifications demonstrate your proficiency in system administration, cloud computing, DevOps, and other essential IT skills needed to support and optimize Linux-based environments.
- Q8: Why should I pursue Linux Foundation Certification?
- A: Linux Foundation Certification enhances your professional credibility, showcasing your skills and knowledge in Linux and open-source technologies. This can lead to better job opportunities, higher salaries, and career advancement in IT, cloud computing, DevOps, and system administration roles.
- Q9: What are the benefits of Linux Foundation Certification?
- A: Benefits include recognition as a certified Linux professional, improved job performance, access to exclusive resources, continuing education opportunities, and staying current with the latest Linux and open-source technologies and best practices.
- Q10: Who should take Linux Foundation Certification Exams?
- A: System administrators, DevOps engineers, cloud engineers, IT professionals, and anyone involved in managing and implementing Linux and open-source solutions should consider these certifications to validate their expertise and advance their careers.
- Q11: What types of Linux Foundation Certification Exams are available?
- A: The Linux Foundation offers various certification paths, including:
- Q12: How do I prepare for Linux Foundation Certification Exams?
- A: Preparation can include official Linux Foundation training courses, study guides, practice exams, online tutorials, and hands-on experience with Linux and open-source technologies.
- Q13: Where can I take Linux Foundation Certification Exams?
- A: Linux Foundation Certification Exams can be taken online with remote proctoring, providing flexibility to fit your schedule and location.
- Q14: How do Linux Foundation Certifications impact my career?
- A: Linux Foundation Certifications significantly boost your career by demonstrating your expertise to employers, making you a more competitive candidate for advanced roles and promotions in IT, system administration, cloud computing, and DevOps.
- Q15: Are there any prerequisites for Linux Foundation Certification Exams?
- A: Some exams may have prerequisites, such as foundational knowledge or prior experience with Linux and open-source technologies. Check the specific requirements for each certification path on the Linux Foundation website.
- Q16: How often do I need to recertify for Linux Foundation Certifications?
- A: Linux Foundation Certifications typically require recertification every three years to ensure that certified professionals stay updated with the latest technologies and industry practices.