(25 Marks) a) Open Systems Interconnection (OSI) model is known as a conceptual framework that describes the functions of a networking or telecommunication system. As a network internship, Jessica uses the OSI model which helps her to narrow down problems (e.g. Is it a physical issue or something with the application?) Your task is to provide information to Jessica by giving a visual description of what is going on with a particular networking system. Question 2 i. Describe briefly THREE (3) main jobs of Presentation layer. Describe briefly THREE (3) utilities to support troubleshoot network connections. ii.