4) Chapter 3 Text Book Problem 17 - remember as each bridge learns where a node is it forwards traffic for the node on the one link only. The first transmission requires all bridges to forward a packet out on all links. After that transmission, some bridges will selectively forward packets. 17. Consider hosts X, Y, Z, W and learning bridges B1, B2, B3, with initlally empty forwarding tables, as in Flgure 3.50. (a) Suppose X sends to W. Which brldges learn where X 1s? Does b) Suppose Z now sends to X. Which bridges learn where Z 1s? c) Suppose Y now sends to X. Which bridges learn where Y Is? (d) Flnally, suppose W sends to Y. Which bridges learn where Wis? Y's network interface see this packet? Does Y's network interface see this packet? Does Z's network interface see this packet? Does Z's network interface see this packet? B1 B2 B3