The CompTIA Security+ Exam Online Simulation (SY0-501) gives you access to a 3-month similar environment you will find on the Security+ Exam, with the same number of questions (random) and the same amount of time to complete the exam. The subscription provides access to a comprehensive 550-question pool of items. The database is available via the web, allowing Security+ candidates to log in at home, at work, or anywhere they have Internet connectivity and is MAC, Windows, and Mobile Phone compatible.