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What do you mean by shorter? By "shorter," mean that the file extension test. js" is shorter than spec. js, and therefore takes up less space and is quicker to type. This may be a small consideration, but can be a factor in deciding on a naming convention for test files, especially in large projects where test files can number in the hundreds or thousands. In what way is it shorter? I apologize for any confusion, what I meant to say was that the file extension test. js is shorter than the extension spec. js’, in terms of number of characters. test. js’ has only 8 characters, while spec. js has 9 characters. Therefore, using test. js can be considered "shorter" in the sense that it takes up less space and can be quicker to type than using " spec. js A Q Count the characters in test.js There are 8 characters in the file extension " test. js 1 SP Count the characters in .spec.js There are 9 characters in the file extension " spec. js KY Count them again…