You Decide: Leonard Cooper Charter School
Running head: YOU DECIDE You Decide: Leonard Cooper Charter School Carmelita McNeill DeVry University, Charlotte Abstract This is paper on Leonard Cooper Charter School networking and print server. I will explain the problem and offer a solution to the situation. There are several in finding a resolution to resolve the issues. The first step requires interviewing the stakeholders of Leonard Cooper Charter School to hear the problems of the current system. This will help with determining what the network should be doing and how to go about getting it done.
Current Issues After interviewing the Stake holders of the Leonard Cooper Charter School the following issues was noted: 1. The first issue: ‘the print server. There are issues with management of print jobs and collisions on the print server. They need to go from a half duplex to a full duplex Ethernet network. In a half duplex Ethernet network, a collision is the result of two devices on the same Ethernet network attempting to transmit data at exactly the same time.
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The network detects the “collision” of the two transmitted packets and discards them both.
Collisions are a natural occurrence on Ethernets. Ethernet uses Carrier Sense Multiple Access/ Collision Detect (CSMA/CD) as its method of allowing devices to “take turns” using the signal carrier line. When a device wants to transmit, it checks the signal level of the line to determine whether someone else is already using it. If it is already in use, the device waits and retries, perhaps in a few seconds. If it isn’t in use, the device transmits. However, two devices can transmit at the same time in which case a collision occurs and both devices detect it.
Each device then waits a random amount of time and retries until successful in getting the transmission sent. (SearchNetworking. com, 1998) 2. The second issue: Speed of the network. They are not operating at a speed that is equipped to handle the objective of the business. They are working with 10 megabit connection and need at least 100. They also have an issue with the connections to the backbone. This also affects the ability to use Voice over IP. They need to choose a media that would allow them to obtain the speeds needed to meet the object of the business. 3.
The third issue: Adding the computers in the class room to the network is the third issue they are facing. They need a solution is scalable and cost effective. 4. Voice over IP is not working properly and connections to the backbone are inadequate. They need a connection that viable for the backbone and equip to handle Voice over IP. Recommendations This is the best solution for the print jobs and collisions: The best remedy for collisions is to upgrade to a full duplex switched environment. Full-duplex is a data communications term that refers to the ability to send and receive data at the same time.
Legacy Ethernet is half-duplex, meaning information can move in only one direction at a time. In a totally switched network, nodes only communicate with the switch and never directly with each other. Switched networks also employ either twisted pair or fiber optic cabling, both of which use separate conductors for sending and receiving data. In this type of environment, Ethernet stations can forgo the collision detection process and transmit at will, since they are the only potential devices that can access the medium.
This allows end stations to transmit to the switch at the same time that the switch transmits to them, achieving a collision-free environment. (Pidgeon, 2011) The 24 Port Switch offers this type of technology. A solution is to implement 3 print servers each having a 24 port switch connected to it. Having a switch on the server would allow each node to communicate with the switch. The switch communicates with the printer. This will fix the problem of printer collisions because the switch would manage the print jobs. Wireless
Wireless would be the best remedy for adding computers to the network. Why choose wireless? The biggest benefit of wireless is that it makes things simpler. Here are the benefits of a wireless network: * Internet Access Sharing Wireless offers an affordable and easy means to share internet connection with multiple PCs. This usually will not require more than one modem. You can add additional computers to your network by simply plugging in the wireless card and switching them on. The company would not have to worry about the extra cost of running fiber optics to added rooms. Sharing Printers and Files Wireless networks also offer easy file access regardless of which part of the building you are in. It allows easy transfer of the files between your laptops and desktops. * Always connected and Speed Another reason for wireless is you will always have a connection to the internet. Wireless network technology runs at speeds far greater than broadband internet access. (Garfield, 2006) Depending on the standard that is chosen, wireless can have speed from 11 Mbps to 100 Mbps. The wireless technology that is recommended is the IEEE 802. 1n. The 802. 11n has more speed and range than the other standards. Fiber Optic 1000Base F – The backbone of a network is the main transmission line that carries data from one network device to another. It is so called because the backbone and the smaller lines that interconnect with it resemble a spine, complete with ribs connected along its length. A network backbone can be constructed from various types of cable, depending on its layout, or topology, protocol — set of rules governing the format of data exchanged between computers — and size.
The important point to note when choosing cable for a network backbone is that the speed and other characteristics of the cable can vary, quite widely, according to the other networking equipment — network interface card, hubs and other devices — used to create the network. The cable, itself, may be theoretically capable of high transmission speeds, but the performance of the network as a whole will always be limited by the speed of the slowest components. For this reason the Fiber Optic 1000Base F is recommended.
Fiber optic cable has many advantages over copper cable. Fiber transmits data much faster over longer distances than copper. Fiber cable is also smaller diameter and weighs less than its copper counterpart, making it ideal for a variety of cabling solutions. Fiber optics are immune to RFI (radio frequency interference) and EMI (Electromagnetic Interference) making them ideal for applications where close proximity to electronic devices can cause RFI and EMI disruption. Fiber optic cabling uses less power and provides less signal degradation than copper cables.
They are generally non-flammable, virtually unable to be tapped, and are better suited for data and illumination transmission. Because the company needs to have speeds of 1000, 100 networks, a fiber optical cable for the backbone connections would be suitable. The fiber optical can transmit more data because of it design. This standard allows transmission of data at 1 Gbps. (Novison, 2011) This will handle the required speeds for Voice over IP phones. Works Cited Garfield, L. (2006, August 16). 5 Reasons to Choose Wireless Networking. Retrieved July 17, 2011, from Computer and Technology: http://ezinearticles. om/? 5-Reasons-to-Choose-Wireless-Networking;id=270730 Novison, E. (2011). Bandwidth Capacity of Fiber Optic Cable. Retrieved July 17, 2011, from eHow: http://www. ehow. com/about_6316840_bandwidth-capacity-fiber-optic-cable. html Pidgeon, N. (2011). How Ethernet Works. Retrieved July 2011, 17, from howstuffworks: http://computer. howstuffworks. com/ethernet15. htm SearchNetworking. com. (1998, February). Collision. Retrieved July 17, 2011, from SearchNetworking. com: http://searchnetworking. techtarget. com/definition/collision