An administrator is attempting to block SSH connections to 192.168.10.24 using the Linux firewall. After implementing a rule, a connection refused error is displayed when attempting to SSH to 192.168.10.24.
Which of the following rules was MOST likely implemented?
Joe, a user, reports that he is no longer able to write files to his home directory. Upon inspection, the Linux
administrator discovers that attempting to create a new file gives the following error: No space left on device. However, the disk and partition are not full. Which of the following commands would be BEST for the administrator to use to continue troubleshooting this problem?
A systems administrator needs to append output of ls â€“lha /opt command to the contents of a test.txt file. Which of the following commands will accomplish this?
A Linux administrator opens a ticket to have an external hard drive mounted. As a security policy, external storage kernel modules are disabled.
Which of the following is the BEST command for adding the proper kernel module to enable external storage modules?
A systems administrator configured a new kernel module, but it stopped working after reboot. Which of the following will allow the systems administrator to check for module problems during server startup?
A systems administrator needs to install a new piece of hardware that requires a new driver. The driver should be manually installed. Which of the following describes the order of commands required to obtain module information, install the module, and check the log for any errors during module installation?
Which of the following can be used to boot a DVD from a remote device to initialize a Linux system setup on bare metal hardware as if it is a local DVD?
A Linux administrator retrieved a repository of files from a Git server using git clone. The administrator wants to see if a configuration file was added to the repository. Which of the following Git arguments should be used to see the recent modifications?
A networked has been crashing intermittently. A Linux administrator would like to write a shell script that will attempt to ping the server and email an alert if the server fails to respond. The script will later be scheduled via cron job.
Which of the following scripts would BEST accomplish this task?
A Linux administrator needs every new file created on a directory to maintain the group permissions of the same directory. Which of the following commands would satisfy this requirement?
A systems administrator is configuring options on a newly installed Linux VM that will be deployed to the Pacific time zone. Which of the following sets of commands should the administrator execute to accurately configure the correct time settings?
A Linux administrator wants to fetch a Git repository from a remote Git server.
Which of the following is the BEST command to perform this task?
Which of the following is the purpose of the vmlinux file on a Linux system?
A Linux administrator needs to remotely update the contents of the www.comptia.org/contacts URL.
Which of the following commands would allow the administrator to download the current contents of the URL before updating?
A systems administrator is troubleshooting an intermittent network connection at the IP address 192.168.1.23.
The administrator wishes to monitor the connection at five-minute intervals for one hour. Which of the following
commands will accomplish this task?
A Linux engineer is troubleshooting a newly added SCSI device for a Linux server that needed more disk
space without rebooting. The engineer discovers that the new device is not visible by the Linux kernel in
fdisk -l output. Which of the following commands should be used to rescan the entire SCSI bus?
A Linux administrator is testing a new web application on a local laptop and consistently shows the following 403 errors in the laptopâ€™s logsâ€
The web server starts properly, but an error is generated in the audit log. Which of the following settings should be enabled to prevent this audit message?
In order to comply with new security policies, an administrator needs to prevent the SSH server from using insecure algorithms.
Which of the following files should be edited to accomplish this?
A systems administrator is enabling quotas on the /home directory of a Linux server. The administrator makes the appropriate edits to the /etc/fstab file and attempts to issue the commands to enable quotas on the desired directory. However, the administrator receives an error message stating the filesystem does not support quotas. Which of the following commands should the administrator perform to proceed?
A systems administrator wants to know the current status of a series of dd jobs that were started in the background three hours ago.
Which of the following commands will achieve this task?
Which of the following statements BEST represents what the term â€œagentlessâ€ means regarding orchestration?
A user, jsmith, needs access to database files located on a server. Which of the following will add jsmith to the â€œdbaâ€ group and preserve existing group memberships?
According to the reference given below. Both AC is correct.
Which of the following will boot from a network-hosted ISO image at power on?
While installing third-party software, a technician wants to monitor logs on the system continuously.
Which of the following commands should the technician issue to monitor the logs?
Ann, a junior Linux administrator, needs to copy software from her local machine to assist in developing a software application on a remote machine with the IP address 192.168.3.22. The file needs to be placed on the /tmp directory. After downloading the RPM to the local machine, which of the following commands would be BEST to use to copy the software?
The following tools help maintain consistency across different systems in an infrastructure:
Red Hat Satellite
If a system file is changed, the tools roll back the file to a predefined configuration.
Which of the following concepts BEST describes this behavior?
An administrator is setting UP a NAT gateway. Two interfaces have been configured:
The firewall configuration has been completed:
The IP forwarding configuration parameter is:
When testing the NAT from a workstation, the administrator encounters an issue:
Which of the following is the MOST likely cause of the packet loss?
A system administrator needs to bootstrap a series of Ubuntu images for a public provider. The administrator must ensure at the images contain the exact same updates, custom. Configure files after their first and then automatically. Which of the following tools the administrator user?
A systems administrator wants to disable the isofs module on the server.
Which of the following will allow the administrator to check if the isofs module is currently in use?
The dracut command is used to:
A new user has been added to a Linux machine. Which of the following directories would contain the userâ€™s
An administrator is configuring a new Linux server and wants to boot the system to a file that was previously downloaded to locally install removable media. Which of the following boot options should the administrator choose?
Which of the following can be used to check the status of wireless devices that are connected to the system?
A Linux administrator suspects unauthorized users are attempting to log in to the Linux server remotely. Which
of the following should the administrator check FIRST?
RedHat and CentOS based systems use this log file instead of /var/log/auth.log. It is mainly used to track the usage of authorization systems. It stores all security related messages including authentication failures. It also tracks sudo logins, SSH logins and other errors logged by system security services daemon.
A user wants to list the lines of a log, adding a correlative number at the beginning of each line separated by a set of dashes from the actual message. Which of the following scripts will complete this task?
A Linux administrator is getting an error message indicating a device does not have any space left on it. However, the administrator runs the following commands and receives the output below:
Which of the following is the MOST likely cause of the issue?
A Linux administrator issues the following command with root or sudo privileges:
Rmp -1 installpackage.rpm --nodeps
Which of the following should the administrator expect to see in the output?
In which of the following Linux GUI environments would the Konsole application MOST likely be found?
Ann, a Linux administrator, is storing scripts in a private Git repository. Which of the following commands should Ann use to avoid entering the login and password every time Ann commits change?
A Linux administrator needs to remove a USB drive from a system. The unmount command fails, stating the device is busy. Which of the following commands will show the reason for this error?
A system administrator needs to run a job called payments_Reconciliation on the last day of the month at the end of the day. Which of the following lines in crontab should be inserted to complete job?
A systems administrator wants to disable the Linux Kernel WatchDog Timer Driver for security purposes.
Which of the following will accomplish this task?
On a UEFI-based system, which of the following invokes GRUB2 from the EFI command prompt?
A technician suspects a company's border firewall is down, thus blocking Internet access. The technician executes the following commands:
#ping -c 1 firewall.company.com
64 bytes from firewall.company.com (192.168.1.1): icmp_seq=1 ttl=64 time=0.061ms
#ping -c 16 www.comptia.com
16 packets transmitted, 0 received, 100% packet loss, time 14999ms
Which of the following commands should the technician use to BEST determine the source of this outage?
Given the output below:
[root@appserver ~]# rm config.txt
rm: remove regular file 'config.txt'? yes
rm: cannot remove 'config.txt': Operation not permitted
Which of the following might be the cause?
A systems administrator downloads an applicationâ€™s source files, compiles the application, and installs it per
the applicationâ€™s installation instructions. When trying to run the application, the system states:
bash: occmd: command not foundâ€¦
Running the locate command shows it does exist in the following location:
Which of the following should the administrator do to allow the command to run properly? (Choose two.)
A user tries to log in to the Linux console and receives the following message:
Your account has expired; Please contact your system administrator.
Which of the following commands was MOST likely run to create this behavior?
A Linux administrator receives the following while attempting to remove a file:
Which of the following commands will resolve the issue?
Therefore 'chattr -i test.txt' will remove the immutable flag (remember that chattr uses - and + to turn off/on options unlike a normal command option which is only ever preceeded by a -) so that the file can then be deleted by rm.
A user creates and installs a Linux VM on a local workstation. The VM can only connect to the local
Which of the following BEST represents the default virtual network configuration in this instance?
A Linux user needs to connect to a remote email server named mail.foo.com through the SMTP port.
Which of the following commands will accomplish this task?
During the final step of staging new Linux hardware, GRUB2 is installed to the system drive. Which of the
following BEST describes the role of GRUB2 in a new Linux installation?
A systems administrator is editing a service file for the web server. In order to continue testing, all web server processes must be shut down. The administrator accomplishes this with the following commands:
Based on the command output above, which of the following BEST explains how this was accomplished?