Wireless Network Advantages and Disadvantages

radio set Ne dickensrk Advantages and DisadvantagesAdvantagesThere be umteen advantages associated with installing a tuner internet compargond to a wired vane much(prenominal) as mobility, cost-effectiveness and adaptability.Wireless Networking is relatively cheaper than wired Networks since they require no argumentations between the computers as well as begin long term costs due to less maintenance since there is less equipment. The reduction of cables in like manner reduces the trip hazard cause by cables running along the floor in most homes. Most radiocommunication network equipment is plug-and-play, which helps reduce the total cost such as vendor installation and eliminates redundancy is contingency of a system crash.Wireless Networking is as well very mobile and versatile it is adaptable to most situations and requirements. Wireless networks erect easily be set up and dissembled, which is perfect for many people who are on temporary worksites/homes or leased space . It green goddess also provide networking in places where first-string wire cannot shit such as the backyard in a home situation. Access points can be used to boost the wireless signal range if essential. Since portable workstations such as laptops catch become popular, wireless networks can provide quick and simplified access to the internet and workspaces for students and teachers in universities etc. It is also extremely easy to add other comp mavennts onto this type of network such as easy installation of VoIP and printers etc without the lease to configure ones computer.DisadvantagesSince wireless networking is a relatively new and depending on(p) form of networking, it is filled with it own hazards and problems such as unreliability and security.Wireless networks have limited bandwidth, hence they cannot support Video Teleconferencing(VTC). It is also limited in its expandability due to the lack of available wireless spectrum for it to occupy.Wireless Network can also be a security risk if not installed and maintained properly. Wireless networks dont require any personal components to touch up to it such as wires, only a wireless adapter is required which significantly increases the accessibility of the network to potential hackers. This scenario is worsened if the network doesnt contain a password since it can then be accessed by anyone with ease.Wireless networks also have an increased chance of jamming and interference due to external factors such as fog and dust storms or when a flying heading such as an aeroplane passes over the field. When too many people in the same area use wireless networks, the band of air that they pass along signals on can become overloaded. pumped-up(a) networksAdvantagesWired networks have existed for a long times, therefore have developed exponentially over the recent years. Improvements have been made in the fields of speed, security and reliability.Wired networks offer the fastest transfer speed of all the networks. Gigabit Ethernet is currently the best choice for wired networks and provides speeds of up to one gigabit per second. This is almost deuce-ace times faster than the best wireless connection available and almost ninety times faster than a regular connection.Wired networks consist of physical, fixed connects which are not prone to interference and fluctuations in available bandwidth caused by factors such as walls. Features such as shielding(adding an atomic number 13 foil around the wires) and twisting at unalike strengths help reduce interference.Wired networks also have a remediate security system than wireless networks. The network itself is harder to connect to since it has to be physically committed to through wires which can become a hassle when trying to hack into it. It cannot be accessed from anywhere since the signals are not broadcasted.DisadvantagesWired networks mainly suffer the inverse of the advantages of a wireless network system such as lack of mobilit y and greater cost.Wireless network require greater resources such as cabling, switch/hub and network circulars to install and to maintain therefore the initial and long term costs are much higher. It can also be a large loss when it has to be disassembled and reinstalled since they wiring has to be completely overhauled and is normally unusable after because of damage.Wired networks can also be a hassle to install new components into because of all the computer hardware required to do this. Cables and network cards are required to install new computers to the system and wires need to be drawn from the switch to the computers. The wiring can become messy and indistinguishable very quickly and can become a potential safety hazard due to the risk of triping.Wired Network ComponentsSwitchThe network switch is a computer networking gismo that connects network segments, it connects the various parts of the network together like a convergence device. The network switch commonly refers t o a network bridge that processes and routes selective information at the Data link layer (layer 2) of the OSI model. Switches that also process data at the Network layer are technically referred to as Multilayer switches.Network cardA network interface card, network adapter, network interface controller (NIC), network interface card, or LAN adapter is a computer hardware component designed to allow computers to communicate over a computer network. It is both an OSI layer 1 (physical layer) and layer 2 (data link layer) device, as it provides physical access to a networking medium and provides a low-level addressing system through the use of MAC addresses. It allows users to connect to each other either by victimisation cables or wirelesslyCablingThere are many types of cabling available but the two common groups are the copper cables and the fibre optic cables.There are two main types of copper cables, twisted pairs and coaxial cable. Twisted pairs are two insulated wires twisted around each other to for a twisted pair. This leads to a better electrical performance and a slightly higher bit rate than untwisted pairs. The twisting helps reduce interference by twisting at different tightness and by also adding in a layer of aluminium around it(shielded). They have become the most common form of transmission media cable today. Coaxial cables are two-wire conductors with a larger bandwidth than the twisted pair cables. The inner cable is heavily insulated so it is safe from bending and crushing and separated from the plait outer conductor. This outer cable is in turn insulated. The resultant electrical field occurs outside the coaxial cable, thus reducing the level of noise making the medium suitable for conducting high bit rates over longer distances than twisted pairs.Fibre Optics Fibre optic cables work through total intimate reflection where a beam of light is passed through a hollow glass tube. There are two methods of transfer for this media, single mode and multi mode. single mode optical fibres only carry a single ray of light that can vary in wavelength. The ray travels analogue to the length of the fibre and is often called the transverse mode since its electromagnetic vibrations occur perpendicular (transverse) to the length of the fiber. Multi mode is mostly used for communication over compendious distances. It utilizes multiple rays of light travelling through the same tube at the same time. Typical multimode links have data rates of 10 megabyte/s to 10 Gigabit/s over link lengths of up to 600 meters.Wireless Network ComponentsWireless Modem/RouterA wireless router is a network device that performs the functions of a router but also includes the functions of a wireless access point. It is commonly used to allow access to the Internet or a computer network without the need for a cabled connection. It can function in a wired LAN (local area network), a wireless only LAN or a tangled wired/wireless network. A modem router al so allows access to the internet for the whole network.Wireless Network AdapterA wireless network adapter allows a computing device to join a wireless LAN. Wireless network adapters contain a built-in radio transmitter and receiver. There are many three main types of adapters, traditional PCI wireless adapters are add-in cards designed for installation inside a desktop computer having a PCI bus. USB wireless adapters connect to the external USB port of a computer. Finally, so-called PC Card or PCMCIA wireless adapters insert into a narrow open bay on a notebook computer.SecurityAuthenticationAuthentications are security measures designed to establish the validity of a transmission, message, or originator, or a means of verifying an individuals potence to receive specific categories of information. E.g. Passwords.FirewallFirewalls can be implemented in either hardware or software, or a combination of both. Firewalls are frequently used to prevent unauthorized Internet users from acc essing private networks connected to the Internet, especially intranets. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria. Types of firewalls include packet filters, proxy master of ceremoniess, Application gateways and circuit level gateways.EncryptionEncryption is the conversion of data into a form, called a cipher text that cannot be easily understood by unauthorized people. Decryption is the process of converting encrypted data back into its original form, so it can be understood. There are three types of encryption, manual, transparent and semi-transparent.ProposalThe most suitable network for this situation is a mixture of both wired and wireless networks. Offices two, three and four should be connected through physical wired connections to ensure maximum speed and reliability and the fastest possible connection with the server without creating a more permanen t layout e.g. burying the wires. Fast Ethernet cabling will be used since extreme transfer speeds are not required for this situation. Office one should be connected to wireless which eradicates the need for cables. Since there is only one computer connected wirelessly the bandwidth is not shared allowing for faster connection speed. There is also the added bonus of being able to connect laptops etc, which are becoming increasingly popular, to the network with ease. The switch and the router will be placed in office three along with the server since it will be the computer that is most frequently accessed, reducing the distance between it and the switch should increase performance. The router/modem will be connected to an internet access point to allow for internet connection.BibliographyAdvantages and Disadvantages of Wireless Networkshttp//faculty.ed.umuc.edu/meinkej/inss690/khayat.pdf (accessed 10/9/10)www.netgear.co.uk/home_newnetwork_wiredwireless.php (accessed 8/09/10)Advantag es and Disadvantages of Wired Networkshttp//www.see.ed.ac.uk/dil/thesis_mosaic/subsection2_7_2_2.html (accessed 10/9/10)www.web-articles.info//Advantages-of-Wired-Networks-over-Wireless-Networks/ (accessed on the 8/9/10)Network Componentshttp//en.wikipedia.org/wiki/Network_adapter (Accessed 10/09/10)http//www.teach-ict.com/as_a2/topics/networks/network%20components/network_components/index.htm (accessed 08/09/10)