9L0-415 Web TestEngine demo

The system version, build number, and hardware serial number are located in the About This Mac dialog or the login screen. The system version number defines the specific version of OS X currently installed. The system build number is an even more specific identifier used primarily by developers.
Finally, the hardware serial number is a unique number used to identify your specific Mac.

The Disk Utility Verify and Repair feature is used to verify or repair the partition scheme and directory structure of a volume. These elements contain the information used to locate files and folders on the volume.

The Traceroute tab of Network Utility allows you to verify the connection hops between your Mac and a remote host.

The master password is used to reset local account passwords.