Which power management mode creates a traffic indication map (TIM) in a basic or extended service set?

Power save polling (PSP) mode is the correct choice because it specifically deals with managing power consumption in wireless networks, particularly in the context of service sets, by creating a traffic indication map (TIM). The TIM is a crucial part of the power management process, as it indicates to the mobile devices within the network which data is buffered at the access point (AP) that needs to be retrieved.

When devices enter power-saving states, they may not be active at all times, which is where PSP mode comes into play. It allows devices to wake up from low-power states at designated intervals to check for any incoming data by reviewing the TIM. This capability ensures that devices conserve battery life while still being able to receive important data when needed.

In contrast, other modes, such as continuous mode, idle mode, and dynamic mode do not involve the specific mechanism of creating a TIM nor do they focus on the management of power in the same way. Continuous mode indicates an always-on state, idle mode suggests devices are not communicating but are still powered on, and dynamic mode typically refers to systems that automatically adjust resources without directly managing power in the context of buffering data for devices.