A server is almost out of free memory and is becoming unresponsive. Which of the following sets of commands will BEST mitigate the issue?

An administrator needs to change the IP address on a server remotely. After updating the configuration files, a network restart is needed. However, the administrator fears that when the network connection drops, the network restart script will be killed before the new IP address has been set.
Which of the following commands would prevent the script from being killed?