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NEW QUESTION 861
Which of the following best describes the function of Linux inodes?
A. To manage a list of filesystem ACLs.
B. To store data using copy-on-write.
C. To store encrypted file data.
D. To track file metadata.
Answer: D
NEW QUESTION 862
A Linux systems administrator wants to validate the network interfaces configuration and status on a Linux server. Which of the following commands should the administrator use to display the information for interface eth3 including status, IP address, subnet mask, and configuration?
A. ip list interface eth3
B. ip addr show dev eth3
C. ip show eth3
D. ip config eth3
Answer: B
NEW QUESTION 863
An application requires a configuration file be placed in each user’s home directory when an account is created. In which of the following locations should the administrator place the configuration file?
A. /etc/ske1
B. /etc/sysconfig
C. /etc/ssh
D. /etc/rc.local
Answer: A
NEW QUESTION 864
A Linux administrator is working with a CPU-intensive program called data-analysis1. The administrator needs to prevent the program from monopolizing CPU resources and ensure that other critical processes are not impacted when the program starts. Which of the following commands would start the program with a reduced level of impact to the system?
A. data-analysis1 –nice 15
B. nice data-analysis1
C. nice -15 data-analysis1
D. data-analysis1 & nice +5
Answer: B
NEW QUESTION 865
A systems administrator is compressing old log files in order to save space. Which of the following commands will allow the administrator to save the most space?
A. bzip2
B. xz
C. tar
D. gzip
Answer: B
NEW QUESTION 866
A Linux administrator wants to verify the runtime parameters of a container’s ENTRYPOINT process. Which of the following commands will allow the administrator to achieve this goal?
A. docker inspect container
B. docker ls container
C. docker ps container
D. docker logs container
Answer: A
Explanation:
The docker inspect <container> command returns the container’s full configuration JSON, including the Entrypoint and any arguments passed at runtime, allowing you to verify the ENTRYPOINT parameters.
NEW QUESTION 867
A Linux administrator is configuring Apache on a system and needs to allow the service to start after every startup. Which of the following commands will allow the Linux administrator to accomplish this task while starting the service at the same time?
A. systemctl mask –state=active httpd
B. systemctl start –runtime boot httpd
C. systemctl set-property restart httpd
D. systemctl enable –now httpd
Answer: D
Explanation:
The command systemctl enable –now httpd both enables the Apache (httpd) service to start automatically on boot and starts it immediately in the current session.
NEW QUESTION 868
A systems administrator receives the following message after running an ip link command to verify the status of a network interface named enp0s3:
state DOWN
Which of the following commands should the administrator use to resolve this issue?
A. ip link set enp0s3 up
B. ip link ifb enp0s3 up
C. ip link add enp0s3 up
D. ip link enp0s3 up
Answer: A
NEW QUESTION 869
The systemd logs are disappearing after a restart, even though the free disk space is adequate. Which of the following is the cause of this behavior?
A. The option Storage=volatile is set in the journald configuration.
B. The journald size limit has been exceeded.
C. The service systemd-journald is disabled and masked.
D. The directory /tmp does not have enough tree space.
Answer: A
NEW QUESTION 870
A Linux user would like the shell changed to /bin/bash. Which of the following commands will accomplish this task?
A. usermod -g /bin/bash user
B. usermod -s /bin/bash user
C. usermod -p /bin/bash user
D. usermod -d /bin/bash user
Answer: B
NEW QUESTION 871
A Linux administrator wants to display a list of all containers, including ones that are stopped. Which of the following commands should the administrator run?
A. docker ps -a
B. docker image list
C. docker stats
D. docker list -a
Answer: A
NEW QUESTION 872
A systems administrator needs to compress log files using the .tar.bz2 format. Which of the following commands should the administrator use?
A. tar -cvtf logs.car.bz2 /var/log/*
B. tar -cvzf logs.tar.bz2 /var/log/*
C. tar -cvjf logs.tar.bz2 /var/log/*
D. tar -cvbf logs.tar.bz2 /var/log/*
Answer: C
NEW QUESTION 873
A new database is installed on a server. To comply with the database vendor requirement, the huge page function should be set permanently. Which of the following commands will set this parameter?
A. sysctl -a “vm.nr_hugepage=100”
B. echo “vm.nr_hiigepage=100” >> /etc/sysconfig/hugepage.conf
C. echo “nvm.nr_hugepage=100” >> /etc/modprobe.conf
D. echo “vm.nr_hugepage=100” >> /etc/sysctl.conf
Answer: D
NEW QUESTION 874
A systems administrator changed the file permissions on the myfile file:
-rwxrwxr-x 1 admin editors … myfile
Then the administrator added an existing user test to the editors group:
sudo usermod -a -G editors test
However, the user test is still unable to edit the file. Which of the following solutions will fix this issue?
A. The user “test” needs to log out and log back in before editing the myfile file.
B. The file is only writable by the root user, and the user “test” needs root permissions.
C. The group for the user “test” needs to be reloaded by running sudo source /etc/group.
D. In order to edit the file, additional permissions are required that the user “test” does not have.
Answer: A
NEW QUESTION 875
Which of the following concepts describes the approach of keeping all configurations in a repository?
A. Inventory.
B. Infrastructure as Code.
C. Orchestration.
D. Agentless deployment.
Answer: B
NEW QUESTION 876
A Linux administrator is updating the file that contains the addresses of the software and update repositories on an Ubuntu system. Which of the following files needs to be edited to accomplish this task?
A. /etc/apt/sources.list
B. /etc/apt/listchanges.conf
C. /etc/yum/yum.conf
D. /etc/dnf/dnf.conf
Answer: A
NEW QUESTION 877
A systems administrator needs to check the size of the filesystem on the current application servers and ensure that the following filesystems are mounted:
/var
/var/log/audit
/tmp
/home/application
Which of the following commands should the administrator use for these tasks?
A. fdisk
B. df
C. du
D. lsblk
Answer: B
NEW QUESTION 878
A systems administrator needs to create a new service unit file. This new unit file is required to start when all services are running with the command-line interface only. Which of the following options should the administrator use to accomplish this task?
A. WantedBy=basic.target
B. WantedBy=network-online.target
C. WantedBy=multi-user.target
D. WantedBy=graphical.target
Answer: C
NEW QUESTION 879
When trying to connect from the bastion host to the remote server, a Linux user always forgets to add some required options in the SSH command line. Which of the following is the best way to permanently solve the user’s issue?
A. Write a connection script and put it in the user’s home directory.
B. Instruct the user to add the required options to the ~/.ssh/config file.
C. Add the required options to /etc/ssh/sshconfig.
D. Establish an alias for the SSH command with all the required options.
Answer: B
NEW QUESTION 880
After making a configuration change to an Apache web server, an administrator needs to reload the service. However, sudo access was only granted to the killall command. Which of the following commands should the administrator use to load the new configuration?
A. sudo killall -HUP httpd
B. sudo killall -reload httpd
C. sudo killall -9 httpd
D. sudo killall -TERM httpd
Answer: A
NEW QUESTION 881
Which of the following best explains why the SUID permission is set on the /bin/passwd file?
A. To allow normal users to update the /etc/shadow file.
B. To ensure group permission on the /etc/passwd file stay up to date.
C. To indicate an attacker has compromised the system.
D. To mark the /bin/passwd file as immutable.
Answer: A
Explanation:
The Set User ID (SUID) permission allows a file to execute with the privileges of the file owner, rather than the user who runs it. The /bin/passwd command is used by users to change their own passwords. The actual password hashes are stored in /etc/shadow, which is only writable by the root user. Since normal users do not have direct write permissions on /etc/shadow, the SUID bit on /bin/passwd enables the command to run with root privileges, allowing password changes.
NEW QUESTION 882
A systems administrator is analyzing the data usage on a Linux system. Which of the following commands will display a list of the entire /var contents along with sizes?
A. ls -ltr /var | sort -n
B. df -h /var
C. du -ah /var/
D. lsblk /var
Answer: C
Explanation:
The du (disk usage) command is used to display the size of files and directories:
1. du -a /var/ – Lists all files and directories under /var along with their sizes.
2. du -ah /var/ – The -h option makes the sizes human-readable (e.g., KB, MB, GB).
NEW QUESTION 883
Which of the following best describes YAML?
A. A data serialization language that is widely used in writing configuration files.
B. An open-source container orchestration engine.
C. A package used to start a cloud instance.
D. An open-source configuration management tool.
Answer: A
Explanation:
YAML is a human-readable data serialization language commonly used for writing configuration files.
NEW QUESTION 884
Before a Linux administrator restarts a system using systemd, the administrator wants to know if any of the server users are currently logged in. Which of the following commands should the administrator use to verify that the server is not being used?
A. loginctl list-sessions
B. journalctl -u
C. systemctl status user-sessions
D. systemd –user
Answer: A
Explanation:
loginctl list-sessions shows all active user sessions on a systemd-based host, allowing the administrator to confirm whether any users are currently logged in.
NEW QUESTION 885
Which of the following commands is used to check and prepare software for compilation?
A. make
B. ./bash.sh
C. install
D. ./configure
Answer: D
Explanation:
The ./configure script probes the system for required tools and libraries, verifies dependencies, and generates tailored Makefiles. After running it, you use make to compile the software.
NEW QUESTION 886
Due to some errors, a Linux administrator needs to permanently disable SELinux on one of the development machines for the time of testing. Which of the following should the administrator do to accomplish this task?
A. Use “setenforce disabled” command and restart the system.
B. Use “setenforce 1” command.
C. Use “systemctl disable selinux” command.
D. Edit the “/etc/selinux/config” file and restart the system.
Answer: D
Explanation:
Changing SELINUX=enforcing to SELINUX=disabled in /etc/selinux/config and then rebooting is the only way to persistently disable SELinux; setenforce only takes effect until the next reboot.
NEW QUESTION 887
A systems administrator wants to execute /usr/local/bin/script.sh from the user1 account. Which of the following commands will accomplish this task?
A. su -c user1 /usr/local/bin/script.sh
B. su – user1 /usr/local/bin/script.sh
C. sudo user1 /usr/local/bin/script.sh
D. sudo -1 user1 /usr/local/bin/script.sh
Answer: B
Explanation:
The su – user1 /usr/local/bin/script.sh command switches to the user1 account with a login shell (the -), and passes the script path so that it runs under user1’s identity. The other options either misuse the -c flag or invoke sudo incorrectly.
NEW QUESTION 888
A Linux systems administrator needs to stop an application and identify which files the application has opened in the /app directory. Which of the following is the best command to use?
A. lsof | grep /app
B. top | grep /app
C. ps -ef | grep /app
D. ls -o /app | grep open
Answer:
Explanation:
lsof lists all open files by process, and piping through grep /app filters to only those files under /app, showing exactly which files the application has open so you can then stop it.
NEW QUESTION 889
Which of the following commands should a systems administrator use to remove a container image from a local Linux system?
A. docker rmi imageID
B. docker remove imageID
C. docker del imageID
D. docker delete imageID
Answer: A
Explanation:
The docker rmi imageID command is the correct Docker CLI instruction to remove a container image from the local system; the other commands are not valid Docker image removal syntax.
NEW QUESTION 890
A systems administrator is working on a system inventory. Which of the following commands should the administrator use to show the list of disks mapped to a Linux system?
A. lsblk
B. du
C. lsattr
D. pvs
Answer: A
Explanation:
lsblk displays all block devices (disks, partitions, LVM volumes) in a tree view, making it ideal for inventorying the disks mapped to the system.
NEW QUESTION 891
……
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