Just curious if anyone knows why there are so few questions for NETA 4 exam as a posed to NETA 3 (A couple hundred vs. a few thousand). Would it be fair to assume you need to know the NETA 2,3 and 4 content for NETA 4 and not just the NETA 4 content or is it perhaps because once people pass NETA 4, they don't bother to add content to test guy?