Which IPv4 multicast address range is reserved to reach multicast groups on a local network?

Which IPv4 multicast address range is reserved to reach multicast groups on a local network?

• A. 225.0.0.0 to 225.0.0.255
• B. 224.0.0.0 to 224.0.0.255
• C. 224.0.1.0 to 224.0.1.255
• D. 239.0.0.0 to 239.255.255.255

Answer: (B)

Multicast traffic is categorized by how far it’s allowed to travel across a network. The range 224.0.0.0 through 224.0.0.255 is reserved for local-network use, meaning packets sent to these addresses stay on the same LAN and are not routed to other networks. This makes them ideal for reaching multicast groups that exist only on that local subnet, such as discovery and link-local protocols. Other ranges are intended for broader scopes or different purposes (for example, some ranges can traverse routers or are administratively scoped within an organization), so they aren’t limited to the local network.

Multicast traffic is categorized by how far it’s allowed to travel across a network. The range 224.0.0.0 through 224.0.0.255 is reserved for local-network use, meaning packets sent to these addresses stay on the same LAN and are not routed to other networks. This makes them ideal for reaching multicast groups that exist only on that local subnet, such as discovery and link-local protocols. Other ranges are intended for broader scopes or different purposes (for example, some ranges can traverse routers or are administratively scoped within an organization), so they aren’t limited to the local network.