Question 1 10 points Save Answer Figure 1 displays the topology of a network with four routers (R1, R2, R3, and R4). The

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Question 1 10 Points Save Answer Figure 1 Displays The Topology Of A Network With Four Routers R1 R2 R3 And R4 The 1 (111.08 KiB) Viewed 41 times

Question 1 10 points Save Answer Figure 1 displays the topology of a network with four routers (R1, R2, R3, and R4). The link distances are represented by numeric values on the edges. We assume distance-vector-based routing protocol in the network and R2's table is shown below. R2 10 R1 R4 40 R3 Table 1: R2's routing table Distance Destination Via R1 R1 기] 15 10 R4 R4 R3 R1 11 The most fresh advertisements made by R2 to its neighbors are represented as : [dR2(R1)=5, dR2(R4)=10, and dR2(R3)=11]. Answer the following questions. a. Using the above notations, what are the advertisements made by R1 to its neighbors? b. Assume that the network situation changed and the link between R2 and R4 has now a distance of 70 instead of 10. R2 recalculates its routing table, what is the updated version of R2's table (Use the notation of Table 1.) Hint: Take into account the advertisements made by R1 in part a which will be used by R2. c. At this stage, what advertisements will be sent out by R2 to its neighbors? (use the notation from part a)? d. After receiving the fresh advertisements, what will be the values of the routing table in R1? (use the format of Table 1). For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).