Quiz submission record for quiz3-1-2 at Mon Jul 5 23:06:33 2004: Your Answer for Question 1: No, they can't. Instructions distinguished by op into R-type and I-type. In R-type, each instruction has different funct. In I-type, each instruction has different op. So instructions can't duplicate in machine code. Your Answer for Question 2: If address difference between Here and There is greater than 2^16-1, then branch is impossible. PC relative addressing can access instruction in only PC+-2^16-1. we can be better by using jump instruction. It uses 26bits as address field. (branch uses 16bits.) Your unique submission ID is quiz3-1-2-cs61c-bd-1089093993-2120.