The collision free protocols are of three type and they are as follows −Bit map protocolToken passingBinary countdownNow let see about binary countdown protocol −Binary CountdownThe binary countdown is explained below in stepwise manner −Step 1 − A problem with the bit map protocol and token passing is that overhead ... Read More

Bit map protocol is called collision free Protocol. In bitmap protocol, each contention period consists of exactly N slots. If any station has to send a frame, then it transmits a 1 bit in the respective slot.Bitmap AlgorithmThe algorithm of Bit Map protocol is explained below −Step 1 − We ... Read More

Carrier Sense Multiple Access (CSMA) is a random-access protocol (multiple access protocol) that is used to minimise the chance of collision and increase performance. The main principle used is 'sense before transmit'. CSMA is using a shared medium which means any data passed with a common interconnection network.The Carrier Sense ... Read More

Carrier Sense Multiple Access (CSMA) is a random-access protocol (multiple access protocol) that is used to minimise the chance of collision and increase performance. The main principle used is 'sense before transmit'. CSMA is using a shared medium which means any data passed with a common interconnection network.The Carrier Sense ... Read More

Aloha is a packet switching system. The time interval required to transmit one packet is called a slot. Aloha is a random access technique.There are two ALOHA protocols as follows −Pure ALOHASlotted ALOHANow let us see what Slotted ALOHA is −Slotted ALOHAThe slotted ALOHA is explained below in stepwise manner ... Read More

Multiple access protocols are generally used to coordinate access to link, here nodes can regulate their transmission onto the shared broadcast channels by using multiple access protocol, It is used on both wired and wireless LAN and satellite network.Multiple nodes can transmit frames at the same time, if so the ... Read More

In wireless networks, a channel can be allocated between source and destination, and in between source and destination each router is connected to its neighbour router in peer to peer manner, the whole channel consists of a number of routers.So some of the channels are used for static routing and ... Read More

In wireless networks, a channel can be allocated between source and destination, and in between source and destination each router is connected to its neighbour router in peer to peer manner, the whole channel consists of a number of routers.So some of the channels are used for static routing and ... Read More

Let us understand what error control in the computer networks is.Error ControlError control is concerned with ensuring that all frames are delivered to destination possibly in an order.To ensure the delivery it requires three items, which are explained below −AcknowledgementTypically, reliable delivery is achieved using the “acknowledgement with retransmission” paradigm, ... Read More

Network layer is the third layer in the OSI model of computer networking. Packet forwarding including routing through routers and quality of service management are done by the network layer.Nature of the serviceThe transport layer at the host side receives the service provided by the network layer. But the transport ... Read More