25. Which of the following network traffic types is sent to all nodes on the network?

Answer: B

Explanation:

Broadcast traffic is sent to all nodes on the network.

Broadcast traffic is a type of network communication that is transmitted to all nodes within a specific network segment. This method ensures that every device on the network receives the same data simultaneously.

A) Unicast

Unicast traffic is directed to a single specific node on the network. It involves a one-to-one communication model, meaning that the data packet is sent to one recipient only, and thus does not fulfill the condition of being sent to all nodes.

B) Broadcast

Broadcast traffic is characterized by its ability to reach all devices on a network. When a broadcast message is sent, every node on the network segment receives it, making this option the correct choice for the question.

C) Multicast

Multicast traffic is designed for a group of selected nodes rather than all nodes on a network. This one-to-many communication method allows a sender to send data to multiple specific recipients, but it does not achieve the broad reach of a broadcast.

D) Anycast

Anycast traffic is a network addressing and routing method in which data is sent to the nearest node in a group of potential receivers. This means that the data is not sent to all nodes, but rather to a specific node that is determined to be the closest one, thereby not satisfying the requirement of being sent to all nodes.

Conclusion

Broadcast is the only traffic type that effectively communicates with every node in a network, making it the definitive correct answer. In contrast, unicast, multicast, and anycast each target specific nodes or groups, failing to meet the criteria of universal delivery to all nodes.