Communications network

1. Compare between the fully connected topology, the star topology and the ring topology in terms of a. Number of links (assume each edge in the graph corresponds to two unidirectional links). b. Minimum number of edge failures that will guarantee that the netwo (i.e., there is at least one pair of nodes which cannot communicate, either directly or indirectly). c. Minimum number of node failures that will guarantee that the netwo rk has failed rk has failed. Fully Connected Tooologv Star Topology Ring Topology 2. In class, expressions for the power received by different nodes in a passive star have been presented. In this problem a similar expression for another topology is to be derived. Assume that the power splitting ratio is adjustable in order to deliver the same amount of power to all the receivers The topology is a binary tree topology, where all the N nodes are at the leaves. The signal always propagates to the root of the tree before being distributed to all of the leaves. Then, give an expression for the maximum value of N in order to support a given bit rate, R if the energy required to detect a bit is E. 3. What are the significant differences in QoS requirements for interactive remote terminals, file transfer, interactive voice conversation and streaming video playback? 4. Using a diagram, map the OSI reference model and the TCP/IP reference model to the Open Data Network model