please only do step 1

3. Network Topology C The topology has changed again with a new LAN added to R2 and a redundant link between R1 and R3. Use the 192.168.10.0/25 network address to provide addresses to the network devices. Also provide an IP address scheme that will accommodate these additional devices. For this topology, assign a subnet to each network PC-C PC-D S2 G0/1 PC-F PC-A so/o/1 PC-B so/o/o R2 PC-E so/o/o so/o/1 G0/1 so/o/o S1 R1 R3 G0/1 S3 so/o/1 Step 1: Determine the number of subnets in Network Topology C. a. How b. How many bits should you borrow to create the required number of subnets? c. How many usable host addresses per subnet are in this addressing scheme? d. What is the new subnet mask in dotted decimal format e. How many subnets are available for future use? many subnets are there? Step 2: Record the subnet information. Fill in the following table with the subnet information: irst Address Number Address Address