Reply To: OCU C)OST A Discussion Lesson 01
A system that allows two or more computers or devices to exchange resources, data, and services is called a computer network. Networks are categorized according to their size, geographic reach, and function. Personal Area Networks (PAN), Local Area Networks (LAN), Metropolitan Area Networks (MAN), and Wide Area Networks (WAN) are the primary varieties.
1. Personal Area Network (PAN)
The smallest kind of network, known as a PAN, is used to link personal devices, such printers, laptops, and smartphones, within a very narrow range, often a few meters (Sharma et al., 2025. Common examples are Bluetooth and USB connectivity. Enabling rapid and confidential exchange of information among personal devices is the goal of a PAN.
2. Local area network (LAN)
Computers in a restricted space, such a home, workplace, or school, are connected by a LAN. Goni, (2021) highlights that files, printers, and internet access are among the resources that can be shared. LANs are perfect for small businesses since they are usually quick and safe.
3. Metropolitan Area Network (MAN)
Compared to a LAN, a MAN covers a wider area, like a city or college. In order to share resources or internet services, it links several LANs together. Providing effective communication within a metropolitan area is the goal of a MAN.
4. Wide Area Network (WAN)
A WAN connects several cities or nations and spans large geographic areas. The best illustration of a WAN is the internet (Troia et al., 2025) . Its goal is to make it possible for consumers and businesses to communicate and share data globally.
References
Goni, O. (2021). Implementation of local area network (LAN) and build a secure LAN system for atomic energy research establishment (AERE). International Journal of Electronics Engineering and Applications, IX(II), 21. https://doi.org/10.30696/ijeea.ix.ii.2021.21-33
Sharma, D., Rai, H., A, M., Dubey, S., & Yadav, H. (2025). An overview on computer networking. International Journal of Innovative Research in Engineering, 142-145. https://doi.org/10.59256/ijire.20250602018
Troia, S., Borgianni, L., Sguotti, G., Giordano, S., & Maier, G. (2025). A comprehensive survey on software-defined wide area network. IEEE Communications Surveys & Tutorials, 1-1. https://doi.org/10.1109/comst.2025.3594678
