RHCSA RHCSA Linux System Administration 2

Question 1

Which command creates a new logical volume named 'data' of size 5GB in volume group 'vg0'?

Accepted Answer

lvcreate -L 5G -n data vg0

Answer

lvcreate -s 5G -n data vg0

Answer

vgcreate -L 5G -n data vg0

Answer

lvextend -L 5G -n data vg0

Question 2

What does the command 'chage -M 90 alice' do?

Accepted Answer

Sets alice's maximum password age to 90 days

Answer

Sets alice's minimum password age to 90 days

Answer

Locks alice's account for 90 days

Answer

Sets account expiry to 90 days from now

Question 3

Which SELinux command restores default file context labels recursively on /var/www/html?

Accepted Answer

restorecon -Rv /var/www/html

Answer

semanage fcontext -a /var/www/html

Answer

chcon -R /var/www/html

Answer

setsebool -P /var/www/html

Question 4

A user needs to run 'systemctl restart httpd' without a password via sudo. Which sudoers entry is correct?

Accepted Answer

alice ALL=(ALL) NOPASSWD: /bin/systemctl restart httpd

Answer

alice ALL=(ALL) /bin/systemctl restart httpd NOPASSWD

Answer

alice ALL NOPASSWD=(ALL) /bin/systemctl restart httpd

Answer

NOPASSWD: alice ALL=(ALL) /bin/systemctl restart httpd

Question 5

Which command displays all active firewalld zones and their assigned interfaces?

Accepted Answer

firewall-cmd --get-active-zones

Answer

firewall-cmd --list-all-zones

Answer

firewall-cmd --list-zones

Answer

firewall-cmd --info-zones

Question 6

What is the effect of setting 'net.ipv4.ip_forward = 1' in /etc/sysctl.conf?

Accepted Answer

Enables the system to forward IPv4 packets between interfaces

Answer

Allows the system to accept ICMP redirects

Answer

Enables IPv4 fragmentation forwarding only

Answer

Disables reverse path filtering

Question 7

Which command permanently adds the 'http' service to the 'public' firewalld zone?

Accepted Answer

firewall-cmd --zone=public --add-service=http --permanent

Answer

firewall-cmd --zone=public --add-service=http

Answer

firewall-cmd --permanent --zone=public --open-service=http

Answer

firewall-cmd --add-service=http --zone=public --save