C1.3: Explain how the principle of least privilege principle is implemented differently in UNIX/Linux and Windows operating system. (2 marks) C2. Answer the following questions: C2.1 From the diagram below, consider yourself the administrator of below networks .How to reduce the attack surface from Internet network to other operating systems of hosts on the network 1,2, 3 and 4. (2 Marks) top-PT Laptop4 RO Server PT Server Server.PT Server2 RO Laptop-PT Laptop2 POVS Ford PC-PT PC2 2950-2 Switch2 250-24 Switcho Network 3 Laptop-PT Laptops Laptop.PT Laptop3 Network 2 Internet 6:00 G 10 Sel3/0 Fa 20 Routero 2901 C Router1 Internet PA 301231-24 Fellsch3 Laptop.PT Laptop R01 FO 2950-24 Switchi Server PT Server Server.PT Serveri Laptop-PT Laptop Laptop-PT Laptopi PC-PT PCO Laptop-PT Laptop? Network 1 PC-PT PC3 Network 4 C2.2: How you will configure a DMZ in network 2 for a web server? Support your answer with a diagram. (2 marks) C2.3: Study the following figure of using nmap scanning tool then answer the following questions: (3.5 marks) root@kali:~# nmap -p1-65535 192.168.1.127 --open starting Nmap 7.60 ( https:/map.org ) at 2017-11-24 04:45 EST Nmap scan report for 192.168.1.127 Host is up (0.0020s latency). Not shown: 65522 closed ports PORT STATE SERVICE 135/tcp open msrpc 139/tcp open netbios-san 443/tcp open https 445/tcp open microsoft-ds rticles.in 902/tcp open iss-realsecure 912/tcp open apex-mesh 3389/tcp open ms-wbt-server 49152/tcp open unknown 49153/tcp open unknown 49154/tcp open unknown 49155/tcp open unknown 49158/tcp open unknown 49159/tcp open unknown MAC Address: FC:AA: E6 (Giga-byte Technology) Nmap done: 1 IP address (1 host up) scanned in 23.07 seconds a. What is the IP address of the scanned host? (0.5 marks) b. From the figure above what is the network address of the scanned host?(1 mark) c. As a system administrator, how would you deal with open but unused ports from the above figure? (1 mark) d. Explain how nmap tool can be used by both network administrator and hackers. (1 mark)