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Linux Foundation LFCS

LFCS

Exam Code: LFCS

Exam Name: Linux Foundation Certified System Administrator

Updated: Nov 03, 2026

Q & A: 277 Questions and Answers

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About Linux Foundation LFCS Exam

Difficulty in writing the LFCS Exam

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Universal answer template

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LFCS exam dumps

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How to Prepare For LFCS Certification Exam

Preparation Guide for LFCS Certification Exam

LFCS: Tips to survive if you don't have time to read all the page

The Linux Foundation Certified System Administrator (LFCS) certification is ideal for candidates starting their career in Linux or in the administration of open source systems. The exam consists of performance-based elements that simulate workplace activities and scenarios that system administrators find in the real world. Obtaining certification allows people to validate their skills with potential employers, which is particularly useful if you have little work experience. The format is multiple choices, multiple answers, Length of Examination are 2 Hours, Number of Questions are 260, Passing score is 66% and Language is English. The exams are delivered online and can be taken from anywhere in the world. Applicants must ensure compliance with the system and identification requirements CentOS 7, Ubuntu 18.You will be asked to select one of the available distributions for review at the time of purchase. A server will be provisioned for use based on the selected implementation; You do not need to provision your server for the exam.

if you have already purchased an exam record, you can verify your distribution selection in the Exam Information panel of the Certifications tab in My Portal. You can also use the Change distribution link located on the portal to request or make changes to the selection.

The LFCS exams based on performance and require that all work be done on the command line. A server is configured to use the candidate during the exam, the candidate does not need to configure his own server. The server is provided using the candidate distribution selection and will be available to the candidate in an online examination console. This exam console can be accessed from a Chrome or Chromium web browser (see system requirements).

For the safety of the exam, candidates are monitored by a supervisor during the exam session through audio, video and screen sharing transmissions. The shared screen flow allows supervisors to see the candidate desktops (including all monitors). Audio, video, and screen sharing transmissions will be archived for a limited period of time, if necessary for further review.

A chat feature located in the exam console allows candidates to communicate with the enabler during the exam. Communication with any other person or entity during the exam is strictly prohibited

Reference: https://training.linuxfoundation.org/certification/lfcs

What is the duration, language, and format of LFCS Exam

Format: Multiple choices, multiple answers

  • Number of Questions: 260
  • Language: English
  • Passing score: 66%
  • Length of Examination: 2 Hours

Linux Foundation LFCS Exam Syllabus Topics:

SectionObjectives
Topic 1: Security- System security fundamentals
  • 1. Basic firewall configuration
    • 2. File permissions and access control
      • 3. SSH key authentication
        Topic 2: Operation of Running Systems- System management
        • 1. Boot process and systemd management
          • 2. Process management and monitoring
            • 3. Logging and troubleshooting
              Topic 3: Service Configuration- Common services
              • 1. Web services basics (HTTP/HTTPS)
                • 2. SSH service management
                  • 3. Time synchronization services
                    Topic 4: User and Group Management- Account administration
                    • 1. User and group creation and modification
                      • 2. Permissions and ownership
                        • 3. Pluggable Authentication Modules (PAM) basics
                          Topic 5: Networking- Network configuration
                          • 1. IP configuration and routing basics
                            • 2. Firewall management basics
                              • 3. DNS configuration and resolution
                                Topic 6: Storage Management- Disk and filesystem administration
                                • 1. LVM basics
                                  • 2. Partitioning and filesystem creation
                                    • 3. Mounting and persistent storage configuration
                                      Topic 7: Essential Commands- Command-line operations
                                      • 1. File management and navigation
                                        • 2. Shell features and scripting basics
                                          • 3. Text processing utilities

                                            Linux Foundation Certified System Administrator Sample Questions:

                                            Question #1
                                            CORRECT TEXT
                                            Which umask value will result in the default access permissions of 600 (rw-------) for files and 700 (rwx------) for directories? (Specify only the numerical umask value.)


                                            Question #2
                                            What of the following can be done by the command ifconfig? (Choose TWO correct answers.)

                                            A. Allow regular users to change the network configuration of a network interface.
                                            B. Set a network interface active or inactive.
                                            C. Specify which network services are available on a network interface.
                                            D. Specify the kernel module to be used with a network interface.
                                            E. Change the netmask used on a network interface.


                                            Question #3
                                            After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem. Which of the following describes the resulting situation?

                                            A. The user is prompted whether bar should be removed, too.
                                            B. Both foo and bar would remain accessible.
                                            C. foo would be removed while bar would remain accessible.
                                            D. foo and bar would both be removed.
                                            E. foo would be removed. bar would still exist but would be unusable.


                                            Question #4
                                            Which of the following commands can be used to limit the amount of memory a user may use?

                                            A. ulimit
                                            B. usermod
                                            C. passwd
                                            D. chage
                                            E. umask


                                            Question #5
                                            Which of the following find commands will print out a list of files owned by root and with the SUID bit set in /usr?

                                            A. find -type suid -username root -d /usr
                                            B. find /usr -uid 0 -perm +4000
                                            C. find /usr -suid -perm +4000
                                            D. find /usr -ls \*s\* -u root
                                            E. find -user root +mode +s /usr


                                            Solutions:

                                            Question #1
                                            Correct Answer: Only visible for members
                                            Question #2
                                            Correct Answer: B,E
                                            Question #3
                                            Correct Answer: C
                                            Question #4
                                            Correct Answer: A
                                            Question #5
                                            Correct Answer: B

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