Itemized lists, where multiple answers collectively form a list, are not allowed. These are usually subjective (e.g., "What is your favorite X?") or otherwise consist of elements from an unbounded list such that answers can only be distinguished from one another by personal preference (voting for the item you prefer) rather than quality or correctness.
Questions answerable with single concise answers are not itemized list questions, even if the answer contains a short list.
The second question seems to have been closed due to its quality, though I completely disagree with the reasoning. It and questions like it are on-topic as you can see, and although I personally dislike them greatly, they're still not itemized lists.