Communication and technology Information technology 2 Instant messaging 2 Mobile communication systems 2 Study and teaching 2 Technological innovations 2 Armed Forces 1 Chinese language 1 Communication in organizations 1 Computer security 1 Computer-assisted instruction 1 Cryptography 1 Data encryption (Computer science) 1 Data processing 1 Data transmission systems 1 English language 1 Femtocells 1 File Transfer Protocol (Computer network protocol) 1 Foreign speakers 1 Home computer networks 1 Long-Term Evolution (Telecommunications) 1 Military administration 1 Mobile agents (Computer software) 1 Multimedia systems 1 Study and teaching (Primary) 1 Telecommunication 1 Wireless communication systems 1