In a client-server communication model, the exchange of messages takes place using sockets, where the client initiates a connection request to the server and sends a message once the connection is established. In the given scenario, the task is for the client to send the message “welcome” to the server. To accomplish this, both the server and client programs must be implemented properly in the context of network programming, typically using TCP sockets for reliable communication. On the server side, the program begins by creating a socket using the `socket()` function. This socket is then bound to a specific IP address and port number using the `bind()` function so that it can listen for incoming client requests. After binding, the server enters a listening state using `listen()`, waiting