RHCSA RHCSA Linux System Administration 5

Question 1

Which command creates a physical volume on /dev/sdc for use with LVM?

Accepted Answer

pvcreate /dev/sdc

Answer

pvcreate initializes a block device as an LVM physical volume by writing the PV metadata.

Question 2

How do you configure a NetworkManager connection to use the static IP 192.168.1.50/24 with gateway 192.168.1.1?

Accepted Answer

nmcli con mod eth0 ipv4.addresses 192.168.1.50/24 ipv4.gateway 192.168.1.1 ipv4.method manual

Answer

nmcli con mod modifies an existing connection profile; ipv4.method manual disables DHCP and applies the static address.

Question 3

Which directive in /etc/ssh/sshd_config disables root login over SSH?

Accepted Answer

PermitRootLogin no

Answer

PermitRootLogin no is the standard sshd_config directive that prevents root from authenticating via SSH.

Question 4

A script needs to run as root at reboot via cron. Which crontab time field triggers this?

Accepted Answer

@reboot

Answer

@reboot is a cron shorthand that runs the command once when the cron daemon starts, typically at system boot.

Question 5

Which command shows the SELinux boolean 'httpd_can_network_connect' and its current value?

Accepted Answer

getsebool httpd_can_network_connect

Answer

getsebool prints the current on/off state of one or more SELinux booleans.

RHCSA Exam Practice Test