CompTIA XK0-005 CompTIA Linux+ Certification Exam Practice Test

A systems administrator is reviewing the following output on the text editor that is being used to update the company's internal database records:

Which of the following extensions should the systems administrator use when saving the file?

A Linux systems administrator needs to add additional code to code that resides within a repository without changing the original code. Once completed, the additional code will be merged into the main branch. Which of the following commands should the administrator use first?

The journald entries have filled a Linux machine's /var volume. Which of the following is the best command for a systems administrator to use to free up the disk space occupied by these entries?

Users are reporting that a Linux server is responding slowly. A systems administrator troubleshooting the server issue sees the following:

# iostat -m 2

Linux 3.10.0-1160.66.1.el7.x86_64 (myhost) 10/19/2022 x86_64 (4 CPU)

avg-cpu: %user %nice %system %iowait %steal %idle

24.30 0.01 0.29 50.38 4.00 19.01

Device: tps MB_read/s MB_wrtn/s MB_read MB_wrtn

sdd 15.65 0.48 0.83 4936250 8513501

# df -h

Filesystem Size Used Avail Use% Mounted on

devtmpfs 16G 0 16G 0% /dev

tmpfs 16G 64K 16G 1% /dev/shm

/dev/mapper/root 35G 8.8G 26G 26% /

/dev/sda2 497M 144M 354M 29% /boot

/dev/mapper/tmp 10G 38M 10G 1% /tmp

/dev/mapper/var 15G 13G 2.2G 86% /var

/dev/mapper/varlib 650G 397G 254G 62% /var/lib

/dev/mapper/varlog 15G 9.5G 5.5G 64% /var/log

/dev/mapper/varaudit 15G 72M 15G 1% /var/log/audit

Which of the following is most likely the issue?

Users report that they cannot access some files located in the /opt/finapp directory after a power outage caused an unexpected server restart. A Linux administrator examines the following filesystem details and system logs:

# mount | grep finapp

/dev/mapper/rhel-opt_finapp on /opt/finapp type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)

# lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

sda 8:0 0 931.5G 0 disk

sda1 8:1 0 1G 0 part /boot

sda2 8:2 0 930.5G 0 part

rhel-root 253:0 0 30.5G 0 lvm /

rhel-opt_finapp 253:1 0 900G 0 lvm /opt/finapp

# grep opt_finapp /var/log/messages

XFS (opt_finapp): Corruption detected in inode 3645, extent tree

Which of the following commands should the administrator run in an attempt to fix the filesystem?

A Linux administrator updated the configuration file for the httpd web service. The administrator needs to apply the updated changes to the service without interrupting any running sessions. Which of the following commands should the administrator run to accomplish this task?

A network administrator issues the dig www.foo.com command and receives an NXDOMAIN response. Which of the following files should the administrator check first?