Many places use some stupid software that will reject resumes if they don't contain certain keywords. So people stuff their resume with keywords. Interviewers may not have time to ask questions on all the tech (even though they were listed in the job ad), so this might not matter, as far as the interview is concerned.

Once they have the job, they can learn on the job. Obviously this wouldn't work for "big" lies, but for smaller ones, this seems to work out.