topology used in IEEE 1901.2aa) star b)mesh c)poin to point

The IEEE 1901.2 standard, which is used for low frequency (less than 500 kHz) Narrowband Powerline Communications, primarily uses a point-to-point topology. This means that each device or node in the network is directly connected to every other device or node. This topology is used because it allows for a high degree of reliability and performance, as data can be directly transmitted from one device to another without needing to pass through any intermediate devices. However, it should be noted that other topologies such as star and mesh can also be used in certain scenarios, depending on the specific requirements of the network.