Wireless Essay Example | Topics and Well Written Essays - 250 words

Wireless - Essay Example Each device on the network must also have a wireless network card in order to receive the wireless signal. The network layer manages the communication from the Ethernet hub. The transport layer keeps the traffic flowing while the session layer keeps traffic moving between computers granted access within the network, such as the desktop computer and a file or a mail server. The application layer is where data visibly moves as characters or entire files between computers.1 The greatest danger is interference from other radio frequencies such as radio-controlled toys.2 The second danger is unauthorized access by other wireless devices. AT&T, for instance, provides firewall software that blocks access, sometimes to needed sites. Certain backup programs are prevented from functioning by the firewall. Encryption is used by most providers to protect their own users. Although, sites like Brookhaven National Laboratories’ policy3 requires that all users register with BNL digitally but that BNL will not encrypt (or protect) the data of guest users. It is a strong policy that protects registered users while granting reasonable limited access to