XK0-004 Practice Questions

An administrator notices a website hosted on an httpd web server is not loading. Upon further inspection, the administrator learns there are no httpd processes running. When starti...

Which of the following Linux server roles should be installed to monitor and log local web traffic?

An administrator is installing a new kernel but is getting an error indicating the filesystem is out of space. A disk usage check shows / has plenty of space. Which of the followin...

A Linux administrator needs to disable the Sendmail service on a Linux server and prevent it from being started manually and during boot. Which of the following is the BEST command...

A user creates and installs a Linux VM on a local workstation. The VM can only connect to the local workstation. Which of the following BEST represents the default virtual network...

A systems administrator is using a Linux laptop to troubleshoot network devices. The administrator runs the following command: # screen /dev/USB0 Which of the following does this c...

A new IO card has been added to the security server to log the opening and closing of the main entrance. A switch is attached, so the interface card returns a 1 when the door is op...

A Linux administrator recently reprovisioned a new corporate web server to replace a legacy one. To minimize the impact on the company's users, the administrator modified the netwo...

A server administrator notices that one of the servers cannot connect to its gateway, which has the IP 10.10.10.1. Which of the following commands should the administrator execute...

A Linux user uses a VPN to securely access the company's systems from a laptop. Which of the following protocols are MOST likely used to secure the VPN connection? (Choose two.)

Joe, a user, reports there is data missing after a reboot of the system he is using. The data he was working on was located in /opt/data/user1. A Linux administrator runs the follo...

A systems administrator notices several intensive tasks executing from users Joe and Ann. These processes are impacting server operations but must be allowed to continue running. W...

A Linux administrator needs to prevent the Postfix mail transfer agent from starting on boot. Which of the following commands will accomplish this task?

A systems administrator manually added a new library to the server. The administrator wants to rebuild the library cache for immediate use. Which of the following commands should t...

An administrator is troubleshooting to determine why backups are failing on a particular server. The administrator runs the ps command and analyzes the following output. The admini...

A junior systems administrator needs to schedule a backup script named /scripts/backup.sh and make the correct changes to the crontab. Which of the following crontab entries would...

A user is unable to write data to an NFS datastore at /mnt/storage. A df command indicates 50% free inodes. Which of the following commands should the user attempt NEXT to diagnose...

A systems administrator clones copies of a Linux VM every time a new Linux server is needed. The administrator notices the command prompt always states localhost.localdomain. Which...

A systems administrator uses a remote execution engine to iterate through each IP address in a network and run a script on remote hosts. The script captures the remote system's hos...

A Linux administrator receives the following while attempting to remove a file: Which of the following commands will resolve the issue?

A systems administrator logs into a Linux server and must identify whether the server is a physical or virtual machine. Which of the following commands should the administrator run...

After cloning a remote repository, a new feature of that project needs to be developed and integrated into the next major release. Which of the following is the first Git operation...

While trying to access a website hosted on the server, the systems administrator receives the following error message: The administrator then performs some diagnostics: Which of th...

A Linux administrator is configuring a server to log security events for the ping command while allowing the request to occur. The Linux server is using AppArmor to manage its secu...

Which of the following BEST describes the difference between a container and a VM?

A systems administrator wants to verify the DNS information of a system that is in production. Which of the following will provide this information?

A systems administrator wants to disable the isofs module on the server. Which of the following will allow the administrator to check if the module is currently in isofs use?

A user cannot write files to the directory. The junior Linux administrator runs the /home/user following commands: Which of the following BEST represents why the user cannot write...

Which of the following commands allow an administrator to determine if the current system is a virtual machine?

A Linux administrator is developing a Bash script to close specific ports on a server firewall. The administrator is not certain of the default port for the Internet Message Access...

When logging in, an administrator must use a temporary six-digit code that is displayed on a key fob. Which of the following has been implemented?

A customer reports a Linux production server is randomly suffering degraded performance. The administrator verifies that the package is installed and enabled on the server. sysstat...

A directory called /employee is shared with many employees in a company. New hardware was acquired, and the systems administrator needs to back up all files in /employee before the...

Which of the following is used on the client to boot a Linux system from a TFTP server?

A Linux administrator has downloaded and installed the httpd package. Which of the following commands will start the service immediately and allow the service to start on system bo...

A Linux administrator is checking connectivity between two servers in separate subnets: Server A: 10.1.2.20 (source) Server B: 10.2.1.10 (destination on port 8080) The administrato...

A newly installed desktop is unable to connect to networked resources. The systems administrator executes various commands and reviews the following output snippets: Which of the f...

A Linux administrator has downloaded the network-tools-12.1-17.i386.rpm package for installation to a local system. The administrator issues the rpm -ivh nerwork-cools-12.1- 17.i38...

An administrator is using a configuration management tool to define a system's configuration. The defined configuration can be used to provision new systems, rebuild existing syste...

When a technician plugs a USB flash drive into a server, the drive does not mount automatically. Which of the following commands will provide the information needed to mount the dr...

Which of the following techniques would BEST allow a client computer to connect to a server that is not normally accessible because the server's application port is blocked by a fi...

Which of the following default files are typically used to contain a list of public keys from other computers? (Choose two.)

The following tools help maintain consistency across different systems in an infrastructure: SUSE Manager Red Hat Satellite Spacewalk If a system file is changed, the tools roll ba...

A systems engineer scheduled an job that will reboot a critical server. A developer states the at processes will not complete for another three hours. Which of the following will h...

A systems administrator installed Git on a new workstation and wants to ensure all Git projects on this machine are initialized with the same username and email address. Which of t...

An administrator is trying to access a server in a cloud via SSH but is unable to log in. The administrator determines the company's IP address has been blocklisted on the server....

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...

Joe, a user, asks a systems administrator to schedule the daily execution of a custom script. Which of the following commands will allow the systems administrator to set up Joe's c...

An administrator needs to download a monitoring agent called node_exporter.0.16.0- Linux.amd64 from the internal web page https://company.local/downloads/. The server does not have...

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 log...