Very Basics of the subjects, whichever was required for the domain. Theoretical knowledge of each core topics is mandatory for DFT(because that's my domain )and also if some little hands on knowledge is there on tools, it's an additional advantage for you.
Explain Setup and hold time
explain asic flow in detail
Design JK flip flop using verilog
What is sequential and combinational circuit, flip flops, latches some practical questions about flops. STA questions
gated clock
finding the critical path in the circuits
Tell about yourself
how do you improve the coverage
Draw an optimized CMOS implementation of some random boolean logic they chose.
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