Which technology offers a mode for simultaneous two-way communication?

Full Duplex technology provides the capability for simultaneous two-way communication, meaning that data can be transmitted and received at the same time. This is akin to a conversation between two people where both can speak and listen at the same time without having to wait for the other to finish.

In networking, Full Duplex is critical for applications that require fast and efficient data exchange, such as video conferencing or real-time communication systems. The ability to send and receive data simultaneously maximizes the efficiency of the communication channel, allowing for higher overall throughput.

In contrast, Half Duplex allows for two-way communication as well, but only one direction can transmit at a time. This means that while one device is sending, the other must wait until the communication is complete before it can respond. Simplex communication is entirely one-directional, which limits interactions further by only allowing data to flow in one direction. Broadcast entails sending data from one point to multiple recipients but does not inherently imply two-way communication as it does not facilitate a response from every recipient to the sender.

Thus, the correct answer highlights the superiority of Full Duplex technology for effective two-way communication.