Final answer:
The correct answer is Bus Topology, which is suitable for smaller LANs but not for large networks due to its limited scalability and reliability.
Step-by-step explanation:
The type of network topology not meant for large networks but still used in some smaller, slower speed LANs is the Bus Topology. In a bus topology, all computers are connected to a single cable or backbone. This setup is easy to install and requires less cable than other topologies. However, it can be slower and less reliable as more devices are added, causing it to be unsuitable for large networks. Other topologies like ring, mesh, or star are more scalable and reliable for larger, higher-speed networks.