I am preparing for taking the 158 (Websphere Application Server) test. I have already studied the 3 indicated test preparation books. When I looked at the ICE test questions, I still have a lot of trouble. My question: 1) What is the difficulty level between ICE test and the real exam ? 2) How can I improve my understanding or concepts ? Any other study materials good for test preparation ? 3) Any test preparation books or materials like the ones for Sun's Java test ? I need more practice to get my concept clear.