Just like in any other industry, it is true that a Federal resumes are an essentiel element in the government hring process. However this doesn't mean that you should undermine the importance of the KSA questions listed in the vacancy announcement. Indeed, not only are KSA's as important as your Federal resume because they actually tell the hiring managers that you have what it takes to perform the job you're applying to but, in some cases, they are even more important: when most candidates have similar profiles and resumes, hiring managers usually use
KSA's to determine who should get invited for an interview or even who should get the job. So make sure, you spend as much effort on your KSA's as on your resume and, if you're not sure you're up to the task, get a professional to prepare your answers for you.