This page is in need of fixing. This page's title currently cannot be set correctly, as "+" and "%2B" both get removed from the URL for some reason. Using the longer URL form (/index.php?title...) works, so it is probably something in the "nice URL" configuration.
A+ Certification is a test for computer repair/maintenance professionals. Although it is quite lengthy (the study guide weighs about 2 kg), it is reputed to be fairly easy to pass if you know much about computers.