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As part of the requirements for installing a new application, the swappiness parameter needs to be changed to O. This change needs to persist across re-boots and be applied immediately. A Linux systems administrator is performing this change. Which of the following steps should the administrator complete to accomplish this task?
Correct Answer: A
To change the swappiness parameter to 0 and make it persistent across reboots and applied immediately, the administrator can perform the following steps: * Append the line vm.swappiness=0 to the file /etc/sysctl.conf using echo "vm.swappiness=0" >> /etc /sysctl.conf (A). This will set the swappiness parameter to 0 for future boots. * Reload the sysctl configuration using sysctl -p (A). This will apply the changes to the current system without rebooting. The other commands will not achieve this task, but either write to a wrong file, use a wrong option, or have a syntax error. References: * [CompTIA Linux+ Study Guide], Chapter 8: Optimizing Linux Performance, Section: Tuning Kernel Parameters with sysctl * [How to Change Swappiness in Linux]