New Release XK0-005 Linux+ Questions

A Linux user is trying to execute commands with sudo but is receiving the following error:

$ sudo visudo

>>> /etc/sudoers: syntax error near line 28 <<<

sudo: parse error in /etc/sudoers near line 28

sudo: no valid sudoers sources found, quitting

The following output is provided:

# grep root /etc/shadow

root :* LOCK *: 14600 ::::::

Which of the following actions will resolve this issue?

A diagnostic tool reports a "host seems down" event for a server with an IP address of 192.168.47.44. Which of the following commands should the administrator use to confirm the host down event?

An administrator accidentally installed the httpd RPM package along with several dependencies. Which of the following options is the best way for the administrator to revert the package installation?

An administrator completes maintenance on a server but cannot remount the logical volume. Given the following output:

# mount /dev/data/files /opt/data/

mount: /opt/data: special device /dev/data/files does not exist.

# lvs

LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert

files data -wi-a------ 600.00m

# vgs

VG #PV #LV #SN Attr VSize VFree

data 1 1 0 wz—n- 1020.00m 420.00m

Which of the following commands should the administrator execute to resolve the issue?