Open Systems Interconnection (OSI) Essay

Lab 2.1Exercise 2.1.1All these elements atomic number 18 necessary because each allows the some other to function and do its job. Without Media the argue cannot transmit. Without porthole the reckoner cannot access the Media. Without the signal the electricity or copper wires cannot transmit in dression. Without Pattern there would be no established format for the signals. And timing lets the devices know when the pattern starts and ends.Exercise 2.1.2Almost all networks in use today atomic number 18 based in some fashion on the Open Systems Inter attachion (OSI) standard. The core of this standard is the OSI quality Model, a set of seven layers that define the different stages that data must go through to travelling from one device to another over a network. But the OSI is just a guideline.Exercise 2.1.3The other networking services areRIP ListenerSimple TCP/IP ServicesUPnP User InterfaceExercise 2.1.4Wi-Fi wireless networks support ad hoc connections between devices. Ad hoc Wi-Fi networks are pure friction match to peer compared to those utilizing wireless routers as an intermediate device.Exercise 2.1.5Lab 2.1 Review1)A peripheral device is an inner(a) or external device that connects directly to a computer but does not contribute to the computers primary function. It helps access and use the functionalities of a computer. (ex. Mouse, flash drive, printer) Network devices are components used to connect computers or other electronic devices together so that they can share files or resources. (ex. Router, dsl filter, Ethernet cable)2)The fewer amount of connections the fast the connection speed with the current connections.3)A peer-to-peer (P2P) network is created when two or much PCs are connected and share resources without going through a separate server computer. Benefits1) It is easy to build and so is the configuration of computers on this network. 2) All the resources and contents are shared by all the peers, unalike server-client architectu re where legion shares all the contents and resources. 3) P2P is more reliable as central dependency is eliminated. disaster of one peer doesnt affect the functioning of other peers. In case of Client Server network, if server goes down whole network gets affected. 4) There is no need for full-time System Administrator. either user is the administrator of his machine. User can control their shared resources.