Computer Technologies Essay Samples
[...] In a typical three-tier architecture, the first layer still handles the database or other centralized data stores; the second layer is where specialized application servers running the programs and/or business logic is run; and the third layer is the client.
In addition to the above-mentioned advantages, middle-tier solution confines development, deployment and maintenance of most of the code to a limited number of dedicated application servers, which is much easier compared to serving multitude of desktops. In a properly implemented three-tier system back-end and middle-tier services can handle the details of data replication and synchronization and automatic load-balancing, providing redundant number of client UI and database copies to cover shortages in case of a component failure. This makes the system more failure-proof, stable and reliable for the end user. [...]
[...] In his book B. Gates points on the "paperless office", how it can simplify the business and productivity process, and reduce costs. Besides, "paperless office" frees workers of a company from paper process that is usually very slow and inflexible, and gives an opportunity to do more productive work. So managers and leaders have to take the "paperless office" implication as one of the first steps to successful company. Simultaneously with the "paperless office" implication managers have to create a high- volume transactions for transferring goods or information, in order to support better services for customers and be high in demand; also they have to create interactive sites, a service and internal support. Another main point in the book is the web lifestyle. Gates finds out many ways how lifestyle will benefit from technology. The Internet will change boundaries around communications, create more personal services, and will throw all existing limitations. Web lifestyle will be characterized by rapid innovations, because infrastructure for high- speed connectivity gives rise to new software and hardware that will reshape people's lives. [...]
[...] the company can build a WAN using the synchronous serial lines. This is the most traditional and simplest way of connecting different points of the network. With serial links, an excellent quality of service is achieved, because point-to-point serial links have minimal overhead, maximizing thee effective throughput. Because this type of networking is straightforward, there is no need for experienced personnel and maintenance cost is minimized. However, all these benefits are overshadowed by the project's cost. It is almost practically unviable to run a synchronous leased lines network around the globe.
A top choice for the WAN solution recently has became a frame relay technology. Frame relay is a high-speed Layer 2 packet switching protocol. It can provide speed up to 45 Mbps. Frame relay is much more faster than X.25 networks, the first WAN standard, because frame relay was designed for modern circuits. [...]