Question

Question 2 3+3]= 6 Marks A. Let's assume that workstations of Asmara, Bushra, and Chyna each attach to the same broadcast LAN (through their adapters). If Asmara sends hundreds of IP datagrams to Bushra with each encapsulating frame addressed to the MAC address of Bushra, will Chyna's adapter process any of these frames? If so, will Chyna's adapter pass the IP datagrams in these frames to Chyna's network layer? How would your answers change if A sends frames with the MAC broadcast address? B. Why would the token ring be inefficient protocol for a Local Area Network with an obnoxiously large perimeter? Which multiple access protocol do you think will provide acceptable efficiency in such case? Oueetion 3

Answer 1

A)

Diagram

Node Adapter 1 Asmara LAN Node Node Chyna Bushra Adapter 2 Adapter 3

The nodes Ashmara, bushra and Chyna are connected through the adapter into a single LAN For the any process of frame adapter has receives the datagram with the MAC address to another node Then it will not send to the datagram packet to the protocol stack When Chyna adapter has receives the datagram sent by the node Ashmara with use of bushra MAC address then it first passes the frame After passes the frame then it knows the MAC address It will not pass through the datagram to the Chyna protocol stack Therefore Chyna adapter pass the datagram but it will not send to the datagram of Chyna protocol stack B) For the node transmit a frame then the node has to be wait for the frame propagate through around the entire ring topology then that before the node can be release the token LR is small when compared to tprop it is inefficient If LAN has to be large perimeter Problems occurred If the node has send through the information only if receives to the token ring topology Data transfer waiting time is high from one to nextnode so the token ring protocol is inefficient