Union apprenticeship sign-ups near Knoxville after 17 years as a security officer

The training centre near Knoxville opened applications for apprenticeships in electrical and welding trades. This is my first time dealing with any of this. The application needs a diploma or equivalent, a driver's licence and a short aptitude test. How hard is the test?

Bring your transcripts and any proof of work history. They asked for both in the interview.