Figure $1$ shows the scientific calculator web application. Using HTML only to write the

HTML Document based on the output shown in Figure $1.$

Figure $1$

Bob has been hired by a leading bank to develop a secure online banking platform that

allows users to access their accounts, perform transactions, and manage their financial

information. The bank emphasizes the importance of security, efficient data

communication, and robust web application development.

a$)$ Explain how the TCP$/$IP model is employed in the architecture of the online banking

platform.

b$)$ Explain the specific roles of the layers in ensuring secure and reliable communication

between the users and the bank's servers.