A company is given a block of IP addresses 123.12.0.0/16. The company consists of three branches, including Headquarter Branch, West City Branch and New River Branch. The number of IP addresses required for Internet access for three branches are 32000, 16000, and 8000 respectively. 1) If 2 bits are borrowed to make four subnets (i.e., /18 is used), what are the four network addresses? Explain why this addressing scheme cannot fulfil the requirement of the company. [8 marks] 2) Design an addressing scheme that can fulfil the requirement of the company. Write down the network address, broadcast address, subnet mask and number of host IP address for these three networks? [12 marks]