1. what is the max freq of a given circuit.(setup and hold analysis related) 2. one question was related to stuck at fault. we need to find out the input test pattern in order to detect the stuck at fault of given circuit. 3. IN1?A:IN2?B:IN3?C:1'b0 How many 2:1 mux are required to implement this? 4 one question was related to FIFO Depth calculation. 5. In a given circuit to meet timing how many no of re timing flops need to be inserted?(you should be clear with setup analysis) 6. Questions were related to transistor sizing and cache memory hit and miss ratio. 7. One puzzle was also asked of Annual function and van related(don't remember exactly. :p)