Computer communications and networks are an integral part of any computer science degree, with the technology growing ever more pervasive in modern life.

This clear and easy-to-follow textbook presents a detailed introduction to the essentials of networking and communications technologies, supported by numerous diagrams, examples and exercises designed to increase confidence in using and understanding communications systems. Thoroughly revised and updated, this much-anticipated new edition retains the popular step-by-step approach of the original, organised to help those without a...