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Computer networks are at the foundation of Information and Communication Technology. A good understanding of the main elements and functions of computer networks is therefore crucial. This program provides a comprehensive overview of: the world of networks; wireless LANs and mobile devices; key hardware and software components; wired and wireless protocols; the strengths and limitations of wired and wireless; and network security. Perfect for senior secondary and TAFE in the fields of Information Technology and business, it is also suited to viewers wanting a better understanding of computer networks. Providing up-to-date information, this program is the ideal guide to the key systems and components of IT networks.