Prior to 2001, the operating system used by Apple for Macintosh desktop computers was completely proprietary. In 2001, Apple introduced a new operating system (OS X) based on Unix. What are three...

Prior to 2001, the operating system used by Apple for Macintosh desktop computers was completely proprietary. In 2001, Apple introduced a new operating system (OS X) based on Unix. What are three advantages to changing to a Unix-based operating system? What are three disadvantages?