Question 1 a) What is a VPN? Explain the two major types of VPNs: Intranet and Extranet b) Explain the difference between a physical topology and a logical topology. c) Describe and explain, with help diagrams, at least four physical LAN topologies. d) Give three types of computer network cables that you know. Question 11 a) Define the concept of cloud computing. b) Give five internet connection options you know. c) What is a network protocol? (give an example) d) Compare the OSI model and the TCP/IP protocol suite giving at least an example of a protocol at each layer. Question !!! a) Explain three threats to computer networks and give the solutions to these threats. b) Explain three different types of clouds that you know. c) Write command-set that could configure a switch's IP address 192.168.1.5 255.255.255.0 on vian1. d) Write commands to configure a router's IP address 192.168.1.1 255.255.255.0 on interface fa0/1