Local area networks (Computer networks) 21 Ethernet (Local area network system) 5 IBM Token-Ring Network (Local area network system) 3 Packet switching (Data transmission) 3 Wireless LANs 3 Wireless communication systems 3 Case studies 2 Computer network protocols 2 Computer networks 2 Computer security 2 Data processing 2 Data transmission systems 2 Dissertations 2 Evaluation 2 Security measures 2 Telecommunication 2 Access control 1 Communications software 1 Competition 1 Computational grids (Computer systems) 1 Computer network architectures 1 Data compression (Telecommunication) 1 Design and construction 1 Digital telephone systems 1 Dissertations, Academic 1 Dissertations, Academic -- 1 Distributed processing 1 Electronic data processing 1 Electronic data processing departments 1 Equipment and supplies 1