This book constitutes the refereed proceedings of the SecondInternational Conference on Advances in Communication, Network, andComputing, CNC 2011, held in Bangalore, India, in March 2011. The 41 revised full papers, presented together with 50 short papers and39 poster papers, were carefully reviewed and selected for inclusion inthe book. The papers feature current research in the field ofInformation Technology, Networks, Computational Engineering, Computerand Telecommunication Technology, ranging from theoretical andmethodological issues to advanced applications.