Assuming you are a network manager, you have to provide a solution for organizations that can effectively protect many of their information resources by making them invisible to the internet. Due to COVID-19, all employees who work from home require access to organizational resources such as internal systems and cloud services. To prevent eavesdropping and implementing encryption in networks between two nodes. a. Introduce a set of standards that provides a secure network with tunnelling support such as authentication and encapsulation. (2 marks) b. Describe the main protocols of that open standard in the IPv4 suite. (8 marks) C. Describe a possible solution that employees do work on the internal corporate network from a remote location with a virtual connection. (4 marks) d. Explain the pros and cons of that solution in c. (6 marks)