US Postal Service Analyst interview questions

Submitted application on line. Notified of making the package to be interviewed. Only one interview with two managers. Lasted less than 30 minutes. Very appropriate, precise questions were asked. Very relaxed and non stressful environment. Asked what I had done to prepare for the position that I was applying for, what made me the best candidate. Also asked for specific tasks that I had accomplished which demonstrated my abilities. Also asked for how I would improve the operation.