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Este Cmap, tiene información relacionada con: CMAP group 4, NETWORKS Geographical area WAN: Wide area network is can cover large distances, providing service to a country or continent, NETWORKS How information is shared Peer-to-peer, Server-based In an environment with more than 10 users, a peer-to-peer network with computers acting as both servers and clients will probably not be adequate., Wired and Wireless Most modern WLANs are based on IEEE 802.11 standards, marketed under the Wi-Fi brand name., NETWORKS ???? Wired and Wireless, Topologies Disadvantages:, NETWORKS Advantages · Communication (users can communicate) ·To share information · Secure Access to a file server using login and password · To manage storing areas for different users ·To share hardware and software, Most modern WLANs are based on IEEE 802.11 standards, marketed under the Wi-Fi brand name. ???? 802.11b of 11 Mbps 802.11a and 802.11g 54 Mbps 802.11 10 meters. 802.11g 100 meters. 802.11n 54 Mbps, NETWORKS Geographical area LAN: Local area network its extension is limited to a building, Disadvantages Advantages:, NETWORKS How information is shared Server-based, Topologies Advantages: Easy to install, easy to add workstations, uses less cable than a Star network, best choice for temporary networks, Wired Wired LANs use Ethernet cables and network adapters. Although two computers can be directly wired to each other using an Ethernet crossover cable, wired LANs generally also require central devices like hubs, switches, or routers to accommodate more computers., NETWORKS ???? Topologies, Topologies Advantages:, Topologies Disadvantages: If there is a central problem with the cable, the entire network goes down, if there are many jobs in the network, data travels slowly, data collisions can happen that the network is busy, low security - you can see all data on the network, limited cable long and a maximum number of workstations, Peer-to-peer In a peer-to-peer network, there are no dedicated servers, and there is no hierarchy among the computers. All the computers are equal and therefore are known as peers. Each computer functions as both a client and a server, and there is no administrator responsible for the entire network, NETWORKS Disadvantages · Expensive set up · Expert staff to manage them · File server : powerful and expensive · More users – Low performance · Vulnerable to security problems (hackers and viruses, Wireless A wireless local area network links two or more devices using some wireless distribution method, and usually providing a connection through an access point to the wider internet, Advantages Disadvantages: