please help me answers this questions as soon as possible

(a) Answer the following questions i) You are given the IP address 192.168.1.4/30. List ALL the addresses within the same subnet of the given address. [2 marks] ii) If the IP address 192.168.4.0/24 is divided into 4 equal sized subnet, what is range of usable addresses for Subnet 1 (the second subnet) and their subnet mask? Show your workings. [3 Marks] (b) Consider the following Figure I with a connection of 5 routers with the link costs, respectively D 8 6 2 E Figure 1 i) Write the complete Bellman-Ford equation for the Router A to Router B [4 marks) ii) Construct the least cost paths for Router A. [2 marks]