Briefly explain why and how to encrypt SMTP traffic

You are asked to increase SSD storage on one Linux web server hosted in AWS. What is the command to find the file system type of the directory /var/dev? What is the command to format your new disk? What is the command to verify your set up after comleting your works?

You noticed that one Linux system name was changed after its reboot in AWS. What steps and commands can be used to fix it? Your solution should help to "maintain" the computer name after its reboot.

You lost access to a virtual machine in AWS. The user name and password are correct and the machine is listed in the management console. Briefly report your troubleshooting plan and steps