Which type of transmission sends data to all devices on a network?

• A. Unicast
• B. Multicast
• C. Broadcast
• D. Peer-to-peer

Answer: (C)

Broadcast transmission is designed to send data packets to all devices on a network simultaneously. This means that when a broadcast message is sent, every device on the local network segment receives and processes that message. This is particularly useful for tasks such as announcements or queries that need to be addressed by every device, like ARP requests in IP networking.

In contrast, unicast transmission targets a specific device, sending data from one sender to one receiver, ensuring that only the intended device gets the message. Multicast transmission involves sending data to multiple specified devices, but not all at once; it requires that those devices join a multicast group to receive the data. Peer-to-peer transmission refers to decentralized communication where each device can act as both a client and a server, which does not specifically address the concept of sending data to all devices at once.

Therefore, the nature of broadcast transmission makes it the correct choice for sending data to all devices on a network.