The Journal of Network and Computer Applications welcomes research contributions, surveys and notes in all areas relating to computer networks and applications thereof. The following list of sample-topics is by no means to be understood as restricting contributions to the topics mentioned:

new design techniques, interesting or novel applications, components or standards
computer networks with tools such as WWW
emerging standards for internet protocols
Wireless networks
Mobile Computing
computing models such as cloud computing, grid computing
network protocols such as sensor networks, delay tolerant networks, Internet of things
applications of networked systems for remote collaboration and telemedicine
applications of an educational, transactional and cooperational nature
applications of security in computer and networks