Question: project 11 during your career in networking you will frequently...
During your career in networking, you will frequently need to interpret network drawings, if not create them yourself. Although seasoned networking professionals use software to help them depict a network, many designs start with a simple sketch. To familiarize yourself with network components and layout, in this project you will draw some simple network diagrams. This project requires only pencil and paper. If you need help remembering what each network topology looks like, refer to Figure 1-7.
1. On your sheet of paper, draw a basic bus topology with four computers attached to the backbone, or bus. Label the computers A, B, C, and D.
2. Now imagine that the user at computer A needs to open a file on computer D, in a peer-to-peer fashion. What path do you think the data will follow from A to D and then from D to A? Add this path, as a dotted line, to your network diagram.
3. On the opposite side of your paper, using no more than half a page, draw a star topology with four computers attached to a central connectivity device. Label the workstations E, F, G, and H.
4. Imagine that the user at computer E wants to open a file that is on computer H's hard disk, in a peer-to-peer fashion. With a dotted line, draw the path you think data would take between these two computers.
5. Now add a printer and a server to your star-topology network drawing. With the addition of a server, you have changed the network from a peer-to-peer network to a client/server network. The printer has become a resource that all the workstation users can share.
6. Suppose the new server is configured to provide all necessary services to the entire star-topology network, including print and file services. Now if computer G sends a document to the printer, what path do you think the document's data will take to the printer? Draw this path as a dotted line on your network.
7. Often, modern networks are not simple star, bus, or ring topologies. Sometimes two or more star-shaped networks are connected via a bus to create a star-bus topology. On the same sheet of paper, draw a second star topology network that consists of three workstations, labeled I, J, and K, and is linked to a central connectivity device.
8. Now draw a line between the two connectivity devices to indicate a bus-style connection between the star-based networks. You have now designed a hybrid star-bus topology network.
9. Suppose that workstation J wants to print to the printer you added in Step 5. Using a dotted line, draw the path you think workstation J's document will take to the printer. Remember that the server still controls all print functions for that network.
10. Of the three different kinds of networks you worked on in this project, which one do you think would allow for the easiest expansion?
11. Considering the amount of hardware and cabling involved, which of the three networks would be least expensive to implement?
Case Project 2-2:
A student is curious about how a Web site appears on his computer screen. Draw and explain the communication between a client and a server when the client requests a Web page; use the OSI model as a reference. For example, what Application layer protocol is required? How will the process differ if the student is sending or retrieving information to or from a secure Web site? Explain to the student how each OSI model layer contributes to data arriving in the correct place without errors.