cs610 assignment solution
Friday, May 21, 2010 Posted In CS and IT Edit Thisa) Suppose that you have been asked to suggest a suitable device from Hub, Switch and Router for the LAB of your campus, which device will you suggest and why?
Switches are to great extent further intelligent devices that analyze each packet coming in. The switch determines where the traffic needs to go and transmits it only on the port connected to the destination computer. This is a much more efficient use of the network’s bandwidth, and it also prevents unauthorized users from intercepting traffic on the network. Until recently, switches were much more expensive than hubs, but recent advances in switch technology have made hubs all but old-fashioned. Routers enable computers to communicate and they can pass information between two networks—such as between your home network and the Internet. This capability to direct network traffic is what gives the router its name. Routers can be wired (using Ethernet cables) or wireless. If you just want to connect your computers, hubs and switches work fine; however, if you want to give all of your computers access to the Internet using one modem, use a router or a modem with a built-in router. Routers also classically provide built-in safety, such as a firewall. Routers are more expensive than hubs and switches. Basically, you want to take a cable from the full router (one of the regular ports) and plug it into the WAN/Internet port on the secondary router or switch. Then you can plug in more devices into the secondary router. The secondary device does not have to be a wireless router; it can be a switch or a normal wired-only router. Specifically, “Don’t use a Second router” you will have It costs absolutely nothing to simply enter the routers configuration setup, turn off DHCP, etc and turn into a switch. It also takes no time at all to do so
Considering the price difference between a switch and a router, I would always look at the option of buying a router and configuring it as a switch.
b) Differentiate among Hub, Switch and Router in the form of table?
A hub is typically the least expensive, least intelligent, and least complicated of the three. Its job is very simple: anything that comes in one port is sent out to the others. That's it every computer connected to the hub "sees" everything that every other computer on the hub sees. The hub itself is blissfully ignorant of the data being transmitted. For years, simple hubs have been quick and easy ways to connect computers in small networks.
A switch does essentially what a hub does but more efficiently. By paying attention to the traffic that comes across it, it can "learn" where particular addresses are. For example, if it sees traffic from machine A coming in on port 2, it now knows that machine A is connected to that port and that traffic to A machine A needs to only be sent to that port and not any of the others. The net result of using a switch over a hub is that most of the network traffic only goes where it needs to rather than to every port. On busy networks this can make the network significantly faster.
Router is the smartest and most complicated of the bunch. Routers come in all shapes and sizes from the small four-port broadband routers that are very popular right now to the large industrial strength devices that drive the internet itself. A simple way to think of a router is as a computer that can be programmed to understand, possibly manipulate, and route the data its being asked to handle. For example, broadband routers include the ability to "hide" computers behind a type of firewall which involves slightly modifying the packets of network traffic as they traverse the device. All routers include some kind of user interface for configuring how the router will treat rowter) (n.) A device that forwards data packets along networks. A router is connected to at least two networks, commonly two LANs or WANs or a LAN and its ISP’s network. Routers are located at gateways, the places where two or more networks connect.
