The best way out for Computer Dynamics is to adopt the architecture of the seven- layer Open System Interconnect reference model which is developed by International Standards Organization. The model deals with a comprehensive set of network utilities which are usually grouped into layers. Also, so as to connect all the buildings of the software development company a ring network topology need to be adopted. The access layer should be connected to each of the building using a switch which in turn connects to the computers in the building. The switches should in turn be connected to the distribution layer switch which is connected to the main router. The network should have a star topology whereby each and every computer has its own signal from the switch. Taking into account the company is a software development company, we can assume that they allow employees to bring their own devices, so wireless connectivity must be in place. Each building may be able to get by with 1 access point per 2 floors, or 3 access points per building. However, if there is poor wireless performance they may need to upgrade to have a wireless access point dedicated to each floor, which is also connected to the floor’s access layer switch.
The layers of the model clearly define the functions of the system. The application layer forms the Open System Interconnect layer which is nearer to the user (FitzGerald et al. Ch. 6). Therefore, both of them interact openly with the software application. The segment launches communication among users and provides basic messaging facilities. Some of the services include file email and file transfer. The second layer is the Presentation layer which enhances data transfer composition for the application layer and executes renditions between various data formats if the need arises. The third layer is the session layer which is responsible for establishing, terminating ad managing sessions between applications. The transportation layer is tasked to give ways in which the formation, repairs, and a systematic termination of invisible circuits are designed while protecting the higher layers from the network execution specifics. The network layer used to offer course-plotting of packets through the network from the origin to the destination. The data link layer is used to ensure intermediate contact in addition to harmonization and error regulation between two units. Finally, the physical layer is used to provide the definite transfer of data through the medium. However, the assumptions that the network is reliable and has zero latency, and unlimited bandwidth are made when adopting the system architecture. The adoption of the star topology of the seven layers open system model will ensure centralized management of the network.
FitzGerald, Jerry, Alan Dennis, and Alexandra Durcikova. Business Data Communications and Networking. 12th. Canada: John Wiley & Sons, 2014.