How much of A+ and Network+ require Windows? I'm a 20+ year Linux user with my RHCSA and SCA.  I'm considering getting my A+ and/or Network+ for increased job opportunities.  How much of this requires Windows to pass?  I hate windows and don't have a single windows machine in my house of six people.  I'm generally comfortable with it when I have to do admin work in it for other people.  So how much of windows is required to pass both of these?