Latest PDF of LFCS: Linux Foundation Certified System Administrator

Linux Foundation Certified System Administrator Practice Test

LFCS test Format | Course Contents | Course Outline | test Syllabus | test Objectives

Overview
The Linux Foundation Certified System Administrator (LFCS) certification is ideal for candidates early in their Linux system administration or open source career. The test consists of performance-based items that simulate on-the-job tasks and scenarios faced by sysadmins in the real world. Obtaining certification allows individuals to validate their skills to prospective employers, which is particularly valuable if you have little on-the-job experience.

Domains & Competencies
The Linux Foundation worked with industry experts and the Linux kernel community to identify the core domains and the critical skills, knowledge and competencies applicable to each certification. Performance-based exams were then developed based on the competencies that were identified.

- Essential Commands – 25%
- Operation of Running Systems – 20%
- User and Group Management – 10%
- Networking – 12%
- Service Configuration – 20%
- Storage Management – 13%

Essential Commands – 25%
- Log into local & remote graphical and text mode consoles
- Search for files
- Evaluate and compare the basic file system features and options
- Compare and manipulate file content
- Use input-output redirection (e.g. >, >>, |, 2>)
- Analyze text using basic regular expressions
- Archive, backup, compress, unpack, and uncompress files
- Create, delete, copy, and move files and directories
- Create and manage hard and soft links
- List, set, and change standard file permissions
- Read, and use system documentation
- Manage access to the root account

Operation of Running Systems – 20%
- Boot, reboot, and shut down a system safely
- Boot or change system into different operating modes
- Install, configure and troubleshoot bootloaders
- Diagnose and manage processes
- Locate and analyze system log files
- Schedule tasks to run at a set date and time
- Verify completion of scheduled jobs
- Update software to provide required functionality and security
- Verify the integrity and availability of resources
- Verify the integrity and availability of key processes
- Change kernel runtime parameters, persistent and non-persistent
- Use scripting to automate system maintenance tasks
- Manage the startup process and services (In Services Configuration)
- List and identify SELinux/AppArmor file and process contexts
- Manage Software
- Identify the component of a Linux distribution that a file belongs to

User and Group Management – 10%
- Create, delete, and modify local user accounts
- Create, delete, and modify local groups and group memberships
- Manage system-wide environment profiles
- Manage template user environment
- Configure user resource limits
- Manage user privileges
- Configure PAM

Networking – 12%
- Configure networking and hostname resolution statically or dynamically
- Configure network services to start automatically at boot
- Implement packet filtering
- Start, stop, and check the status of network services
- Statically route IP traffic
- Synchronize time using other network peers

Service Configuration – 20%
- Configure a caching DNS server
- Maintain a DNS zone
- Configure email aliases
- Configure SSH servers and clients
- Restrict access to the HTTP proxy server
- Configure an IMAP and IMAPS service
- Query and modify the behavior of system services at various operating modes
- Configure an HTTP server
- Configure HTTP server log files
- Configure a database server
- Restrict access to a web page
- Manage and configure containers
- Manage and configure Virtual Machines

Storage Management – 13%
- List, create, delete, and modify physical storage partitions
- Manage and configure LVM storage
- Create and configure encrypted storage
- Configure systems to mount file systems at or during boot
- Configure and manage swap space
- Create and manage RAID devices
- Configure systems to mount file systems on demand
- Create, manage and diagnose advanced file system permissions
- Setup user and group disk quotas for filesystems
- Create and configure file systems

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Question #241
Given a file called birthdays containing lines like:
YYYY-MM-DD Name -
1983-06-02 Tim
1995-12-17 Sue
Which command would you use to output the lines belonging to all people listed whose birthday is in May or June?
A. grep '[56]' birthdays
B. grep 05?6? birthdays
C. grep '[0-9]*-0[56]-' birthdays
D. grep 06 birthdays | grep 05
Answer: C
Question #242
The script, script.sh, consists of the following lines:
#!/bin/bash
echo $2 $1
Which output will appear if the command, ./script.sh test1 test2, is entered?
A. test1 test2
B. test2 test1
C. script.sh test2
D. script.sh test1
E. test1 script.sh
Answer: B
Question #243
Which approach will provide a listing of the contents in a tar archive?
A. Use the tar command with -t.
B. Use the grep command.
C. Use the find command.
D. Use the zless command.
E. Use the zlist command.
Answer: A
Question #244
Which character starts a comment line in a shell script file?
A. ;
B. *
C. #
D. /
Answer: C
Question #245
What is the output of the following command sequence?
for token in a b c; do
echo -n "$token ";
done
A. anbncn
B. a b c
C. "a " "b " "c "
D. token token token
E. abc
Answer: B
Question #246
What is the correct command to extract the contents of the archive file download.bz2?
A. unpack download.bz2
B. unzip2 download.bz2
C. bunzip2 download.bz2
D. unzip download.bz2
E. uncompress download.bz2
Answer: C
Question #247
Which command chain will count the number of regular files with the name of foo.txt within /home?
A. ls -lR /home | grep foo.txt | wc -l
B. find /home -type f -name foo.txt | wc -l
C. find /home -name foo.txt -count
D. find /home -name foo.txt | wc -l
E. grep -R foo.txt /home | wc -l
Answer: B
Question #248
Which of the following command sequences overwrites the file foobar.txt?
A. echo "QUIDQUIDAGIS" >> foobar.txt
B. echo "QUIDQUIDAGIS" < foobar.txt
C. echo "QUIDQUIDAGIS" > foobar.txt
D. echo "QUIDQUIDAGIS" | foobar.txt
Answer: C
Question #249
Which of the following commands redirects the output of cmd to the file foo.txt, in which an existing file is
overwritten?
A. cmd || foo.txt
B. cmd | foo.txt
C. cmd && foo.txt
D. cmd >> foo.txt
E. cmd > foo.txt
Answer: E
Question #250
What does the exit status 0 indicate about a process?
A. The process ended without any problems.
B. The process was terminated by the user.
C. The process couldn't finish correctly.
D. The process waited for an input but got none.
E. The process finished in time.
Answer: A
Question #251
Which of the following commands will output all of the lines with the name Fred in upper or lower case but not the
word red from the file data_file? (Choose two)
A. grep -v fred data_file
B. grep '[f]red' data_file
C. egrep fred data_file
D. grep '[Ff]red' data_file
E. grep -i fred data_file
Answer: DE
Question #252
The output of the program date should be saved in the variable actdat. What is the correct statement?
A. actdat=`date`
B. set actdat='date'
C. date | actdat
D. date > $actdat
E. actdat=date
Answer: A
Question #253
SIMULATION -
What two character sequence is present at the beginning of an interpreted script? (Please specify the TWO correct
characters only)
Answer: #!
Question #254
How can the current directory and its subdirectories be searched for the file named MyFile.xml?
A. find . -name MyFile.xml
B. grep MyFile.xml | find
C. grep -r MyFile.xml .
D. less MyFile.xml
E. search Myfile.xml ./
Answer: A
Question #255
Which of the following commands will set the variable text to olaf is home? (Choose two)
A. text=olaf\ is\ home
B. text=$olaf is home
C. $text='olaf is home'
D. text=='olaf is home'
E. text="olaf is home"
Answer: AE
Question #256
Which of the following commands will create an archive file, named backup.tar, containing all the files from the
directory /home?
A. tar /home backup.tar
B. tar -cf /home backup.tar
C. tar -xf /home backup.tar
D. tar -xf backup.tar /home
E. tar -cf backup.tar /home
Answer: E

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Linux Foundation Certified System Administrator Practice Test

LFCS test Format | Course Contents | Course Outline | test Syllabus | test Objectives

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LFCS Certification Training and Practice Test

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