Assessments - 4, GPA: 4.3
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The communication speed varies depending on the distance between communication devices, existence of obstacles between such devices, the device configuration, the radio conditions, and the software in use. In addition, communications may be cut off depending on the radio conditions. The communication range varies depending on the actual distance between communication devices, existence of obstacles between such devices, the radio conditions, the ambient environment that includes existence of walls and materials of such walls, and the software in use. Actual communication speed may not be as fast as the one displayed on your computer. Deploying IEEE 802.11b and IEEE 802.11g products on the same wireless network may reduce the communication speed due to radio interference. Taking this into consideration, the IEEE 802.11g products are designed to reduce the communication speed to ensure communications with IEEE 802.11b products. When the communication speed is not as fast as expected, changing the wireless channel on the access point may increase the communication speed. 6666nNUsing Your VAIO Computer Communicating without an Access Point (Ad-hoc) An ad-hoc network is a network in which a LAN is created only by wireless devices themselves, with no other central controller or access point. Each device communicates directly with other devices in the network. You can set up an ad-hoc network easily at home. 6767nNUsing Your VAIO Computer To communicate without an access point (ad-hoc) ! You cannot select the 5 GHz band, which is used for the IEEE 802.11a standard, on ad-hoc networks. The IEEE 802.11n draft standard, using the 2.4 GHz or 5 GHz band, is not available on ad-hoc networks. 1 Turn on the WIRELESS switch. 2 Click the button next to or above your desired wireless option(s) in the VAIO Smart Network window. Make sure the WIRELESS indicator light turns on. 3 Click Start and Control Panel. 4 Click View network status and tasks under Network and Internet. 5 Click Set up a connection or network in the left pane. The Set up a connection or network window appears. 6 Select an option to specify the ad-hoc network settings and click Next. 7 Follow the on-screen instructions. 6868nNUsing Your VAIO Computer Communicating with an Access Point (Infrastructure) An infrastructure network is a network that extends an existing wired local network to wireless devices by providing an access point (not supplied). The access point bridges the wireless and wired LAN and acts as a central controller for the wireless LAN network. The access point coordinates transmission and reception from multiple wireless devices within a specific range. The access point will select which channel to use on an infrastructure network. ! For details on how to select the channel that will be used by the access point, see the manual that came with your access point. 6969nNUsing Your VAIO Computer To connect to a wireless network 1 Make sure an access point is set up. See the manual that came with your access point for more information. 2 Turn on the WIRELESS switch. 3 Click the button next to or above your desired wireless option(s) in the VAIO Smart Network window. Make sure the WIRELESS indicator light turns on. ! Wireless LAN communication (IEEE 802.11a standard) using only the 5 GHz band, available on selected models only, is disabled by default. To enable 5 GHz band communication, you need to select the option to use the 5 GHz band or both the 2.4 GHz and 5 GHz bands on the WLAN tab in the VAIO Smart Network settings window. 4 Right-click or on the taskbar and select Connect to a network. 5 Select the desired access point and click Connect. . For WPA-PSK or WPA2-PSK authentication, you must enter a passphrase. The passphrase is case sensitive and must be a text string between 8 and 63 characters in length or a hexadecimal string of 64 characters. 7070nNUsing Your VAIO Computer Stopping Wireless LAN Communications To stop wireless LAN communications Click the button next to or above the WLAN icon in the VAIO Smart Network window. ! Turning off the wireless LAN function while accessing remote documents, files, or resources may result in data loss. 7171nNUsing Your VAIO Computer Using the Bluetooth Function You can establish wireless communications between your computer and other Bluetooth devices such as another computer or a mobile phone. You can transfer data between these devices without cables at a range of up to 10 meters in an open area. To start Bluetooth communications 1 Turn on the WIRELESS switch. 2 Click the button next to or above the Bluetooth icon in the VAIO Smart Network window. Make sure the WIRELESS indicator light turns on. 7272nNUsing Your VAIO Computer Notes on using the Bluetooth function . The data transfer rate varies, depending on the following conditions: . Obstacles, such as walls, located between devices . Distance between devices . Material used in walls . Proximity to microwaves and cordless telephones . Radio freq...
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