What type of message is delivered to a group of devices, possibly across different networks?

What type of message is delivered to a group of devices, possibly across different networks?

• A. Routing table
• B. Static routing
• C. Broadcast message
• D. Multicast message

Answer: (D)

Delivering to a group of devices, potentially across different networks, is best described as a multicast message. In IP networks, devices that want the content join a multicast group, and the sender transmits to a special multicast group address. Routers then forward the packet only toward subnets that have members of that group, using multicast routing protocols. This makes delivery efficient, reaching all interested receivers without flooding every device on every network. This differs from a broadcast, which would push the data to all devices on the local network (or within a defined broadcast domain), regardless of interest. It also isn’t about a routing table or static routing, which are about how paths are learned or fixed rather than about delivering a message to a specific group.

Delivering to a group of devices, potentially across different networks, is best described as a multicast message. In IP networks, devices that want the content join a multicast group, and the sender transmits to a special multicast group address. Routers then forward the packet only toward subnets that have members of that group, using multicast routing protocols. This makes delivery efficient, reaching all interested receivers without flooding every device on every network.

This differs from a broadcast, which would push the data to all devices on the local network (or within a defined broadcast domain), regardless of interest. It also isn’t about a routing table or static routing, which are about how paths are learned or fixed rather than about delivering a message to a specific group.