Cadence Design Systems Interview Question

Draw the Diff amp and explain how it works, Draw 4 input NAND gate using only 2 input NAND Gates, Explain Latchup, Explain Multiple Patterning, Draw the Bitcell of SRAM and explain the operation, Best way to search for an element in a sorted array, SKILL code to check if string is Palindrome, What is Electromigration etc