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Wireless Access
Wireless access connecting end systems ( that are often mobile) into the network. Today there are two broad types of wireless internet access(1) wireless and (2) wide area wireless. In a wireless LAN wireless users transmit receive packets to form a base station ( also known as a wireless access point) within a read us of a few tens of meters. The base station is typically connected to the wired internet and thus serves to connect wireless users to the wired networks. In wide area wireless access networks the base stations is managed by a telecommunications provider and serves users within a radius of tens of kilometres.
Wireless LAN are based on IEEE 802.11 technology ( also knows as wireless Ethernet and wi fi) are currently enjoying rapid deployment in university departments business offices, coffee cafes and homes. Using this wireless LAN infrastructure students send and receive e mail or surf the web from anywhere in campus ( for example library dorm room classroom or outdoor campus bench.
Today many residences are combining to broadband residential access with inexpensive wireless LAN technology (cable modern or DSL) with inexpensive wireless LAN technology to create powerful home networks. This home networks consists of a roaming laptop as well as three stationary PC ( two wired one wireless) a base station ( the wireless access point) which communicates with the wireless PCs a cable modern providing broad band access to the internet and a router which interconnects the base station and the stationary PC with the cable modern. This networks allows the residents to having broadband internet access, if one member roaming form the kitchen to the backyard or to the bedroom.
When one access the internet through wireless LAN technology one has typically need to be within a few tens of meters from the base station. This is feasible for home access coffee shop access and more generally access within and around a building.
Layers, Massages, Segments, Datagram's and Frames Figure 2.15 show the physical path data takes down a sending end systems protocol stack up and down the protocol stac
ARP sent the request in broadcast, response is unicast When a source sends ARP request the switch broadcast the ARP req. if it doesn't have the destination mac address in its ma
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What do you mean by Beaconing and Auto-Reconfiguration? When a station does not receive a message from its nearest active upstream neighbor, it sends out a warning, otherwise c
IP plus port (IP on layer 3 and port on Layer 4 - In Encapsulation, socket base decision on Network Layer -Layer 3)
Error detection and correction The digital traffic stream of second generation systems also lends itself to the use of error detection and correction methods. The result can be
The bitonic sorting network needed log n number of stages for performing the task of sorting the list. The first n-1 stages of the circuit are able to sort two n/2 numbers and the
Verify VLANs and trunking. Use the show ip interface trunk command on S1 and the show vlan command on S2 to determine that the switches are trunking correctly and the proper VL
How do we continuously ping an IP Address?
NETWORK ANALYZERS: A network analyzer also known network monitor or a network sniffer is used to calculate the performance of or debug a network. It may report statistics s
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