This book includes Question and Answer most likely to be asked in the B.E. (Comp. Sc.) MCA, MSc (IT), PGDCS and other IT related examinations. It includes eight Chapters and each chapter contains important questions with answers. This guide covers questions related to Search Algorithms, Analysis and design , Data representation, Arrays, Linked list, Stacks and Queues, Trees and Graphs. Ample number of diagrams are used to illustrate the answers for easy understanding . Sample papers with answers are also added at the end of this book.