Ground Floor: Customer Service and Marketing Department
There are a total of 20 workstations.
There are two network printers accessible by all workstations.
The Internet is accessible by all workstations.
Visitors should be able to access to the wireless internet access, wifi.
The network topology best suited for the ground floor is the star topology. A star topology is one where by each work station or computer peripheral are centrally connected by use of a computer/hub or switch.
In this way, when one connection of the network is not working or faulty, it does not affect the rest of the work stations in the network. This is a big advantage in this type of network.
Fig 1.0
However, they are other network topologies that can be utilized like the bus, ring, hybrid and mesh topologies. They have their own draw backs that make them inefficient. For example the bus topology, when there is a break at any point in the ring network, the entire network fails.
Fig 1.0 represents a generic star topology with one broken connection. Though the connection to that particular computer is broken, the network still operates.
Since this computer network is interconnected exclusively within itself, it can be referred to as a Local Area Network.
At this point, the definition of a hub is imperative. Quite simply, a hub is a small inexpensive device that joins computers together. Most hubs today use the Ethernet Standard and others the USB standard.
The Hub represents layer one and two in the OSI model, also know as the Open Systems Interconnection reference model seen below.
Fig 1.3 OSI model
To network/co...
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...cable from either computer and connecting them to the network router. By doing this the printer's are connected to the LAN.
To make sure the print out do not get mixed up, workstations 1-10 use the first printer called Printer A, and the rest of the workstations use printer B.
References. http://compnetworking.about.com/od/ethernet/f/what-is-an-ethernet-cable.htm http://compnetworking.about.com/od/networkprotocols/ http://compnetworking.about.com/od/networkdesign/ig/Computer-Network-Topologies/ compnetworking.about.com/od/speedtests/a/network-speed.htm http://compnetworking.about.com/od/ethernet/g/cat5-cables.htm http://www.amazon.com/Netgear-EN524-24-Port-Ethernet-Hub/dp/B00004Z8AI http://compnetworking.about.com/od/hardwarenetworkgear/a/how-to-network-a-printer.htm http://www.amazon.com/Dynex-DX-E402-4-Port-Ethernet-Broadband/dp/B0013BI7JQ
A Hub is a networking device that allows one to connect multiple PCs to a single network. Hubs may be based on Ethernet, Firewire, or USB connections. “A switch is a control unit that turns the flow of electricity on or off in a circuit. It may also be used to route information patterns in streaming electronic data sent over networks. “
Ethernet is often built into hardware devices such as network interface controllers, to allow the sending and receiving of data packets to that piece of hardware. Ethernet can be used to create a wired local area network, which can subsequently communicate with other LAN’s, ad infinium, which in turn creates the internet. Ethernet uses a system called CSMA/CD or Carrier Sense Multiple Access with Collision Detection. This system is able to deal with collisions which happen when two messages are sent at the same time. When two nodes on a network attempt to exchange data at the same time, they collide and create an error. When this happens, all nodes involved are notified. The Ethernet protocol will then set a random time interval, after which the node will re-attempt the transmission. This will be done until the message is successfully sent. Just as the hypertext transfer protocol and transmission control protocols will be used every single time a student at PCO’s learning centre accesses internet, so too is the ethernet protocol. This, however, will be done in a slightly different way. As the students will be using Wi-Fi to connect to the modem, ethernet will not be used. In saying this, ethernet will be used to connect to the NAS and the printer. For example, if two students want to print something, and they do so at the exact same time, the messages will collide. As the printer is connected through ethernet, the printer, and two computers will be notified of the collision. The ethernet protocol will then set a random time interval, and the printing request will be sent again at different times for each computer. Although this is a reasonably complex process, in real time, the students will have no idea this is happening, and the printer will print both students documents like nothing has
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Point-to-Point routing system, unlike low-cost competitors that utilize hub-and-spoke system, partnering with larger airlines to provide connecting flights.
To attempt to define a network in a few sentences would be a fool’s errand. A network could be seen as simply a grid of interconnecting connections between multiple bodies. However when this vision is applied to real-world systems, they all start to differ. There is not anything that exists in the universe that is not part of a network. A network is the result of different parts or members which have similarities in parts of their identity. This similarity that they have in common, they will also have with other bodies forming a network between them. Most of these factors of identity are different from those of most others. As a result, each factor will be in common with different other members of different networks. Each factor includes this body in a multitude of networks. This means that no one thing is in one and only one network, but is included in many.
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Network cables are another component that is used in communication between network devices. Cables are used to connect one network device to other via several different connections. The most reliable type of connection between two or more devices is to use a wired connection. These connections can be used to share data and access between servers, PCs, printer...
In conclusion, a local area network is made up of computers and a myriad of devices, such as routers, servers, switches, and firewalls. In order for it to connect to the Internet, a router must be installed. Servers provide special functions such as printing, file sharing, etc. Switches connect the computers together from different parts of the network. Firewalls prevent unauthorized access. There are a host of other devices that may be used as well. These devices are hubs, gateways, repeaters, wireless access points,
MARKETING DEPARTMENT The aim of this department is to make sure that the business produces goods that consumers would want to buy and sell. Activities of marketing and sales department at Sainsbury's: Market Research: this type of research is a research that Sainsbury's would like to find if a product or a service is suitable for the consumers. This is because they can find out what kind of products or services the consumer's wants. Sainsbury's would also like to find out about if the product exists, if so, how would they manage to improve it. There are two types of research Sainsbury's could use 1) field research and 2) desk research.
In this topology, all nodes are connected to a central device, usually a hub or a switch. Each connected device has a dedicated, point-to-point connection between the device and the hub. The star network topology is by far the most widely implemented topology in use today.
poor marketing. A firm has to get the 4P's right to make it easy to
Local Area Networks also called LANs have been a major player in industrialization of computers. In the past 20 or so years the worlds industry has be invaded with new computer technology. It has made such an impact on the way we do business that it has become essential with an ever-growing need for improvement. LANs give an employer the ability to share information between computers with a simple relatively inexpensive system of network cards and software. It also lets the user or users share hardware such as Printers and scanners. The speed of access between the computers is lighting fast because the data has a short distance to cover. In most cases a LAN only occupies one or a group of buildings located next to each other. For larger area need there are several other types of networks such as the Internet.
A bus network is a network topology in which nodes are directly connected to a branched half-duplex link called a bus. A star topology is a topology for a Local Area Network in which all nodes are individually connected to a central connection point, like a hub or a switch. A star takes more cable, but the benefit is that if a cable fails, only one node will be brought down. Advantages of using a star topology include fast connection speed because each workstation has a dedicated cable, it will not slow down when many users are on-line and new workstations can be added without affecting the other workstations.
With the design separated into smaller logical pieces, network design problems can be easier to solve through divide and conquer techniques. Vendors who follow the model will produce equipment that is much more likely to be compatible with equipment from other vendors. The OSI model also provides for more extensible network designs. New protocols and other network services are easier to add to a layered architecture.
The two main ways printers work is either impact or nonimpact. Impact printers have a device that touches the paper and then creates an image while nonimpact does not touch the paper. The type we use most often in our homes is the nonimpact printers; these include the ink-jet and laser printers. The ink-jet printer drops ink from a nozzle onto the paper. The laser printer is a bit more complicated because it uses toner, static electricity, and heat to get the ink where you want it on the paper. This is nice though because it decreases the drying time that may cause ink to smear, especially when you are printing pictures. (Tyson)