Most job should be based off of qualifications. You either have them or you don't. These qualifications should be showcased on your resume. Then when you interview it gives you a chance to convey your skills to the employer. The "who you know" part never hurts. In some jobs you'll automatically get a leg up on someone they're unfamiliar with. That is if you have a good image in their eyes. Nepotism always is a big factor when it comes to a family member applying for a job with a company.