Which of these commands allows you to use shared libraries that are in /usr/local/lib?

What information is found in the following excerpt from the file /proc/mdstat? (Choose two.)

On a Debian based system, which command can be used to stop the apache2 init script from running at boot time once the real script has been removed from /etc/init.d/?

What command will remove the physical volume /dev/sda4 from the volume group /dev/vg0?
(Provide the command with options and parameters)

A network client has an ethernet interface (eth0) configured with an IP address in the subnet
192.168.0.0/24. This subnet has a router, with the IP address 192.168.0.1, that connects this subnet to the Internet. What needs to be done on the client to enable it to use the router as its default gateway? (Choose TWO correct answers.)