Which MikroTik feature allows for monitoring and controlling bandwidth usage?

The correct choice is Simple Queues because this feature specifically focuses on managing bandwidth for different users or connections. Simple Queues enable administrators to define rules that allocate, limit, or prioritize bandwidth. By setting up these queues, you can effectively monitor and control how much bandwidth each user or service consumes, allowing for better network performance and fairness among users.

In contrast, the Firewall primarily deals with security by filtering traffic based on specified rules, but does not directly manage bandwidth allocation. The Hotspot feature provides a way to manage access to the network, often used in public Wi-Fi environments, but it does not inherently control bandwidth. Lastly, the DHCP service is responsible for dynamically assigning IP addresses to devices on the network, which does not involve bandwidth monitoring or control. Thus, Simple Queues is the most appropriate feature for the specific task of bandwidth management.