23. Case Study 1 Chapter 3 The Mumbai branch of MoneyMaker bank has multiple departments, which are on different floors in the same building. Each department is interconnected using UTP cables. John, the network administrator has set up a client server environment and has used a star topology. The employees of the bank are unable to transmit data and information from one department to another in an efficient manner
24. Problem Chapter 3 Data and information cannot be transmitted between the departments efficiently
25. Suggested Solution Chapter 3 The problem is caused due to EMI emitted by the electrical transformers. John should use STP cables to interconnect the different departments located on each floor as STP provides better protection from EMI. The computers inside each department can be interconnected using UTP cables.
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36. Case Study 2 Chapter 3 The Chennai branch of MoneyMaker bank has a database server. All departments are connected to this server using coaxial cables. These departments are unable to retrieve and update information from the server spontaneously. It takes a lot of time to get updated information.
37. Problem Chapter 3 The employees of the bank are unable to retrieve information from the database quickly.
38. Suggested Solution Chapter 3 The problem is caused due to the lower transmission speeds provided by the coaxial cables. These cables provide a maximum transfer rate of 10 Mbps. Thus, if all departments of the bank try to access the information from the server, the speed slows down. To increase the data transfer rate, the network administrator should use UTP Cat 6 twisted pair cables. This cable provides higher bandwidth and higher data transfer rate as compared to coaxial cables.
39. Media Comparison Chapter 3 Characteristics UTP STP Coaxial Cables Fiber Optic Cables Bandwidth 10 Mbps – 100 Mbps 10 Mbps – 100 Mbps 10 Mbps 100 Mbps - 1 Gbps Maximum cable segment 100 meters 100 meters 200 – 500 meters 2 k.m. – 100 k.m. Interference rating Poor Better than UTP Better than twisted pair wires Very good as compared to any other cable Installation cost Cheap Costly than UTP Costly than twisted pair wires Most costly to install Bend radius 360 degrees / feet 360 degrees / feet 360 degrees / feet or 30 degrees / feet 30 degrees / feet Security Low Low Low High
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