(a) Compare the functionality of layers in TCP/IP model against OSI model. [12 marks] Performance Criteria 1-10m 11-20m Able to briefly list the OSI model and Able to compare the OSI model and TCP/IP model. TCP/IP model with sentences or table. (b) With Covid-19 pandemic restriction in place globally, a surge in video conferencing and Internet streaming increased Internet traffic and our reliance on digital technology in and out of the workplace. Discuss six (6) challenges for people globally and the digital world