Computer network is an interface of two or more computers that is built for the purpose of sharing, information, data, and resources. Computer network has nodes that serve as the origin, route, and receiver of data. Computer network is built using a combination of hardware and software. LANs and WLANs are the most common form of computer network and they are used intensively and extensively in CAD/CAM/CAE applications. This review talks about the latest implementation of LANs/WLANs in CAD/CAM/CAE applications, their limitations, and consideration for their usage. There are four aspects that a LAN/WLAN system must fulfill which are Fast, Expandable, Reliable, and Secure. LAN and WLAN including their many standards each has different properties which influence their implementation in CAD/CAM/CAE applications.