An administrator needs to allow additional specific users and groups to have access to a foWer without removing the original owner or group. Which of the following commands should the administrator use to complete this task?

The ability to add web servers dynamically during peak user activity and remove them when user activity decreases is an example of:

An administrator needs to see the type of CPU that a server is running. Which of the following files contains this information?

A systems administrator is creating a new volume opt _ app in a volume group app_vg. The new volume should utilize all the available disk space from the newly added disk device /dev/ sdb. Which of the following will achieve the task, assuming the app_vg volume group does not exist yet and the disk device was added but not configured?

A server administrator is given the hash of an account password that needs to be synchronized across all servers.
Which of the following will allow the server administrator to configure the account password?