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Data Flow : Simplex & Half Duplex& Full Duplex &

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  Data Flow :   Simplex, Half Duplex, Full Duplex What are the types of data flow? Communication between two devices can be  simplex ,  half - duplex , or  full-duplex. What is simplex communication? 1__Simplex:  In simplex mode : the communication is unidirectional, as on a one-way street. Only one of the two devices on a link can transmit; the other can only receive . The simplex mode can use the entire capacity of the channel to send data in one direction . What is  Half-Duplex  communication? 2__Half-Duplex :  In half-duplex mode : each station can both transmit and receive, but not at the same time. When one device is sending, the other can only receive, and vice versa. NOTE In a half-duplex transmission ,the entire capacity of a channel is taken over by whichever of the two devices is transmitting at the time. The half-duplex mode is used in cases where there is no need for communication in both directions at the same time; the entire capacity of the channel can be utilized for e
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types of physical topology ? mesh &star & bus & and ring topology ?

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  Physical Topology types of physical topology :   The term physical topology : What meant by topology : refers to the way in which a network is laid out physically. Two or more devices connect to a link.  two or more links form a topology. The topology of a network is the geometric representation of the relationship of all the links and linking devices (usually called nodes) to one another. What are Types of network topology : There are four basic topologies possible:  1_mesh  2_star 3_bus 4_and ring. 1_mesh : What is Mesh Topology ?  In a mesh topology :  every device has a dedicated point-to-point link to every other device.  The term dedicated means that the link carries traffic only between the two devices it connects. What is the example of mesh topology? What is a full mesh topology? Full mesh topology occurs when every node has a circuit connecting it to every other node in a network. A fully connected mesh topology. What are the advantages of a mesh network ( topology) ? Advan
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