Q # 5 Consider the 4-bit generator, G , shown in Figures 5.8(in the book), and suppose that D has the value 10101010. What is the value of R? Q # 6 In section 5.3, we provided an outline of the derivation of the efficiency of slotted ALOHA. In this problem we'lI a. Recall that when there are N active nodes, the efficiency of slotted ALOHA is Np(1 -p)-1 Find the value of p that maximizes this expression. Q # 7 Study and discuss the main criteria of selecting a good generator number in the process of error checking CRC method. Q # 8 Study the different variations of CSMA (1- (persistent, non-persistent, p-persistent