Computer networks Security measures 38 Computer security 19 Data transmission systems 14 Management 12 Internet (Computer network) 8 TCP/IP (Computer network protocol) 5 Business enterprises 4 Computer science 4 Data protection 4 Electronic data processing 4 Internet 4 Maintenance and repair 4 Telecommunication 4 Access control 3 Business enterprise 3 Coding theory 3 Computer 3 Computers 3 Data encryption (Computer science) 3 Firewalls (Computer security) 3 Internetworking (Telecommunication) 3 Problems, exercises, etc 3 World Wide Web 3 Asynchronous transfer mode 2 Database management 2 Defense measures 2 Encyclopedias 2 Extranets (Computer networks) 2 Handbooks, manuals, etc 2