1. 是否可以延长到1.5年? Yes, it is possible. For me, I wanted to graduate together with my friends, so I completed it in 9months and besides that, I got a job already in December 2011. With a degree from Berkeley in IEOR you can normally find many jobs.(但是学校网站好像写的是不可以延长?不太清楚....)
2.毕业生进入哪些行业? My classmates have received jobs in a broad range of industries, as operations research is needed everywhere. For instance, some are in Consulting(McKinsey, BCG), some are in Engineering(SanDisk, Cisco), some are in Finance(Banks).