I am studying for my CompTIA A+ exam while working a full-time tech support job. I have read the books, but I am worried about the performance-based questions and the tricky wording of the multiple choice. The free practice tests I find online seem too easy. I need to find a source of realistic CompTIA Practice Questions that match the real exam difficulty. Has anyone found a good website or service for this? Where do you go for questions that actually prepare you for the test, with clear explanations for the answers? I want to practice effectively in my limited study time.