Data communications & network security

Data Communications and Network Security Carr, Houston H Computer science illuminated Dale, Nell Introduction to the theory of computation Sipser, Michael Parallel Computing Bhujade, Moreshwar Introduction to computer Science Govindaraju, S Schaum's outlines Fundamentals of Computing with C++ Hubbard, John R Basics of OS, UNIX and Shell Programming Grouo Isrd An introduction to Computer Studies Kalicharan, Noel