Questions on number series, percentages, ratios, time & work, speed & distance, logical puzzles, syllogisms, basic probability, and permutations.Topics include C/C++ programming concepts (pointers, arrays, structures, memory management), embedded systems (microcontroller basics, interrupts, timers, GPIO, ADC), real-time operating systems (RTOS) basics, Linux commands & shell basics, communication protocols (UART, I2C, SPI, CAN), MCUs and ARM architecture basics, and digital electronics (logic gates, flip-flops).