Note that the question didn't get closed off topic.
It got closed as not constructive because there is a certain expectation that people who ask questions do a little research first. Really short questions that are broad and don't have much in the way of necessary detail about the context tend to get closed like this, as do questions that look like they can be answered by a single google query. Questions asking for a series of steps or a guide also tend to meet this fate.
In the end, a model answer tends to include some theory or technological background related to why you are having trouble or are confused (such as an explanation of an option's meaning, a protocol, or some odd syntax), some suggestions for things you might look at or a pointer to the root cause, and possibly a link for reference.
What model answers typically don't include are step by step guides or scripts to accomplish your exact task in your environment with environment-specific details (this often isn't general enough to be useful to someone coming upon the question later), lists of recommended devices or software, or like things.
Questions that can't be answered with a model answer as I've vaguely and nonexclusively defined above will tend to get closed like this.