In a Pastry network using DHT, in which m = 4 and b = 2, draw the identifier space with four nodes, N02, N11, N20, and N23, and three keys, k00, k12, and k24. Determine which node is responsible for each key. Also show the leaf set and routing table for each node. Although it is unrealistic, assume that the proximity metric between each two nodes is based on numerical closeness.