CSC Systems Administrator interview questions

Fairly straight forward, but takes forever to hear back. They do not move fast

I was referred by a current employee and received an interview almost immediately. My initial interview was via phone and then I set up a time to meet with the project manager and team members. Interview was general it administrator questions and behavioral questions. I was told that I would be contacted when a decision was made and I received a call stating that an offer for me to begin work had been made which I accepted, however, I could only start working when my background clearance was completed by the government.