Explain the access methods used in LANs.
Access methods utilized in LAN:
i. Switched access: this is used in LANs which are assigned around CBXs.
Electronic switching is ways are used to give access.
ii. Multiple accesses: In multiple access schemes as CSMA, when a station finds ready for transmission, this first listens to the bus to notice if there is any ongoing transmission. The new transmission is not initiated till the bus becomes free, if there is one. It ensures that an ongoing transmission is not corrupted through a new transmission.
iii. Token passing access: In this type of scheme, a token packet is initiated to the network. This packet carries on circulating through the network providing no user accepts this. Whenever a user works to transmit the waits for the token packet for reaching him and accepts the token, such acceptance eliminates the token packet by the network.