XK0-004 exam

A Linux administrator has configured a Linux system to be used as a router. The administrator confirms that two network adapters are properly installed and functioning correctly. In addition, the output of the iptables CL command appears to contain a complete firewall configuration. Which of the following commands does the...

A systems administrator has received reports of intermittent network connectivity to a particular website. Which of the following is the BEST command to use to characterize the location and type of failure over the course of several minutes?A . mtr www.comptia.orgB . tracert www.comptia.orgC . ping www.comptia.orgD . netstat www.comptia.orgView...

A junior Linux administrator is optimizing a system in which an application needs to take priority 0 when running the process. The administrator runs the ps command and receives the following output: Given this scenario, which of the following steps will address this issue?A . Issue the command ronice Cn...

A junior Linux administrator is trying to verify connectivity to the remote host host1 and display round-trip statistics for ten ICMP. Which of the following commands should the administrator execute?A . ping Cc 10 host1B . traceroute Cc 10 host1C . netstat host1D . pathping Cc 10 host1View AnswerAnswer: A...

A server is almost out of free memory and is becoming unresponsive. Which of the following sets of commands will BEST mitigate the issue?A . free, fack, partprobeB . lsof, lvcreate, mdadmC . df, du, rmmodD . fdisk, mkswap, swapon -aView AnswerAnswer: A Explanation: Reference: https://vitux.com/7-commands-to-check-swap-space-in-debian-10/

A new HTTPS web service is being deployed on a server. Which of the following commands should the Linux administrator use to ensure traffic is able to flow through the system firewall to the new service?A . iptables CI OUTPUT Cp tcp --sport 443 Cj ACCEPTB . iptables CA INPUT...

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 . lsmodB . modprobeC . modinfoD . dmesgView AnswerAnswer: C Explanation: Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/deployment_guide/sec-displaying_information_about_a_module

A Linux administrator is testing connectivity to a remote host on a shared terminal. The administrator wants to allow other users to access the terminal while the command is executing. Which of the following commands should the administrator use?A . bg ping remotehostB . fg ping remotehostC . ping remotehost...

DRAG DROP The lead Linux has added a disk, /dev/sdd, to a VM that is running out of disk space. Place the following steps in the correct order from first (1) to last (4) to add the disk to the existing LVM. View AnswerAnswer: Explanation: Reference: https://www.rootusers.com/how-to-increase-the-size-of-a-linux-lvm-by-expanding-the-virtual-machine-disk/

A systems administration team has decided to their systems as immutable instances. They keep the desired state of each of their systems in version control and apply automation whenever they provision a new instance. If there is an issue with one of their servers, instead of troubleshooting the issue they...