Page 4 of 14 · 263 total questions.
A systems administrator made some changes in the ~/.bashrc file and added an alias command. When the administrator tried to use the alias command, it did not work. Which of the following should be executed FIRST?
The correct answer is A. Option A: source ~/.bashrc
A junior systems administrator has just generated public and private authentication keys for passwordless login. Which of the following files will be moved to the remote servers?
The correct answer is D. Option D: id_rsa.pub This option keeps traffic private / properly secured as required.
A Linux administrator cloned an existing Linux server and built a new server from that clone. The administrator encountered the following error after booting the cloned server: The administrator performed the commands listed below to further troubleshoot and mount the missing filesystem: Which of the following should administrator use to resolve the device mismatch issue and mount the disk?
The correct answer is C. Option C: mount disk by-label
A systems administrator installed a new software program on a Linux server. When the systems administrator tries to run the program, the following message appears on the screen. Which of the following commands will allow the systems administrator to check whether the system supports virtualization?
The correct answer is B. Option B: lscpu
A Linux administrator created the directory /project/access2all. By creating this directory, the administrator is trying to avoid the deletion or modification of files from non-owners. Which of the following will accomplish this goal?
The correct answer is A. Option A: chmod +t /project/access2all
A Linux systems administrator needs to persistently enable IPv4 forwarding in one of the Linux systems. Which of the following commands can be used together to accomplish this task? (Choose two.)
The correct answer is C, E. Option C: echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf Option E: sysctl –p
Due to low disk space, a Linux administrator finding and removing all log files that were modified more than 180 days ago. Which of the following commands will accomplish this task?
The correct answer is C. Option C: find /var/log -type f -mtime +180 -exec rm {} \
A junior administrator is setting up a new Linux server that is intended to be used as a router at a remote site. Which of the following parameters will accomplish this goal?
The correct answer is C.
Some servers in an organization have been compromised. Users are unable to access to the organization’s web page and other services. While reviewing the system log, a systems administrator notices messages from the kernel regarding firewall rules: Which of the following commands will remediate and help resolve the issue?
The correct answer is B.
A junior administrator is trying to set up a passwordless SSH connection to one of the servers. The administrator follows the instructions and puts the key in the authorized_key file at the server, but the administrator is still asked to provide a password during the connection. Given the following output: Which of the following commands would resolve the issue and allow an SSH connection to be established without a password?
The correct answer is B. Option B: mv .ssh/authorized_key .ssh/authorized_keys
A Linux administrator needs to resolve a service that has failed to start. The administrator runs the following command: The following output is returned Which of the following is MOST likely the issue?
The correct answer is A. Option A: The service does not have permissions to read write the startupfile.
A Linux engineer is setting the sticky bit on a directory called devops with 755 file permission. Which of the following commands will accomplish this task?
The correct answer is D. Option D: chmod 1755 devops
A Linux administrator booted up the server and was presented with a non-GUI terminal. The administrator ran the command systemctl isolate graphical.target and rebooted the system by running systemctl reboot, which fixed the issue. However, the next day the administrator was presented again with a non-GUI terminal. Which of the following is the issue?
The correct answer is C. Option C: The administrator did not set the default target to graphical.target.
Users report that connections to a MariaDB service are being closed unexpectedly. A systems administrator troubleshoots the issue and finds the following message in /var/log/messages: Which of the following is causing the connection issue?
The correct answer is C. Option C: Something is starving the server resources.
A developer is trying to install an application remotely that requires a graphical interface for installation. The developer requested assistance to set up the necessary environment variables along with X11 forwarding in SSH. Which of the following environment variables must be set in remote shell in order to launch the graphical interface?
The correct answer is D. Option D: $DISPLAY
A systems administrator is implementing a new service task with systems at startup and needs to execute a script entitled test.sh with the following content: The administrator tries to run the script after making it executable with chmod +x; however, the script will not run. Which of the following should the administrator do to address this issue? (Choose two.)
The correct answer is B, C. Option B: Create a unit file for the new service in /etc/systemd/system/ with the name helpme.service in the location. Option C: Add #!//bin/bash to the top of the script.
A Linux administrator needs to correct the permissions of a log file on the server. Which of the following commands should be used to set filename.log permissions to -rwxr—r--. ?
The correct answer is D. Option D: chmod 744 filename.log
After listing the properties of a system account, a systems administrator wants to remove the expiration date of a user account. Which of the following commands will accomplish this task?
The correct answer is D. Option D: chage -E -1 accountname
A systems administrator wants to be sure the sudo rules just added to /etc/sudoers are valid. Which of the following commands can be used for this task?
The correct answer is A. Option A: visudo -c
A user generated a pair of private-public keys on a workstation. Which of the following commands will allow the user to upload the public key to a remote server and enable passwordless login?
The correct answer is D. Option D: ssh-copy-id user@server This option keeps traffic private / properly secured as required.
Showing questions 61–80 of 263 · Page 4 of 14