2. (Link access control) (a) What is the idea such that the Aloha and Ethernet networks need no centralized (b) What are differences of the link access control for the Aloha and cable-Ethernet (c) Consider a discrete-time Aloha network with two hosts ni and n2. Suppose for each link access control? networks? slot, n and n transmit a packet with probability p and 2p, respectively. What is (d) Following the above question. What is the p such that the successful transmission (e) Consider a discrete-time Cable-Ethernet network with two hosts ni and n2. Let the successful transmission probability for each slot? probability is maximized? Td is the maximum time for a node to detect a collision. What is Td, in terms of Tpropagation (i.e., the propagation time between the two hosts)? (f) Following the above question. Suppose for each slot, ni and n2 transmit a packet with probability p and 2p, respectively, and the the slot length is Ta. What is the fraction of time during which nodes rasit successfully, in termas of p.Tpestioans and Ttransmision 2. (Link access control) (a) What is the idea such that the Aloha and Ethernet networks need no centralized (b) What are differences of the link access control for the Aloha and cable-Ethernet (c) Consider a discrete-time Aloha network with two hosts ni and n2. Suppose for each link access control? networks? slot, n and n transmit a packet with probability p and 2p, respectively. What is (d) Following the above question. What is the p such that the successful transmission (e) Consider a discrete-time Cable-Ethernet network with two hosts ni and n2. Let the successful transmission probability for each slot? probability is maximized? Td is the maximum time for a node to detect a collision. What is Td, in terms of Tpropagation (i.e., the propagation time between the two hosts)? (f) Following the above question. Suppose for each slot, ni and n2 transmit a packet with probability p and 2p, respectively, and the the slot length is Ta. What is the fraction of time during which nodes rasit successfully, in termas of p.Tpestioans and Ttransmision