Final answer:
The correct combination for creating a two-way synchronous communication is activities initiated from both the client side and the server side, allowing real-time interaction.
Step-by-step explanation:
To establish a two-way synchronous communication between a client and a server, the correct combination of activities would be from client side and from server side.Two-way synchronous communication systems, such as WebSocket in web development, require an ongoing open connection where the client can send messages to the server and receive responses without the need to initiate a new connection for each exchange. This means that there must be mechanisms in place on both the client and server ends that listen for and send messages back and forth, in a synchronous manner.
Such communication is typically seen in real-time applications like chat systems, where both parties must be able to send and receive messages at any given time without any delay or the requirement for manual refresh.The combination of activities used for creating a two-way synchronous communication between a client and a server is: from the client side and from the server side.Synchronous communication refers to a real-time exchange of information between the client and the server. In a two-way synchronous communication, both the client and server send requests and responses simultaneously. This ensures a continuous flow of data between the two.