This book aims at simplifying the students' effort to master the course "Signals & Systems", which is an important one for various engineering streams like Electronics & Communication, Electrical Engineering, Applied Electronics and Computer Science under almost all the Universities. This book consists of all questions from Kerala Technological University in this course, where questions and the solutions are partitioned in various sections. All the useful equations, formula and theorem statements are given in the beginning chapter. This book is meant for students who are preparing for examinations and the solutions are elaborated for the reach of even average students.