Which of the following actions can be performed using '/ip firewall mangle'?

The command '/ip firewall mangle' is a versatile feature in MikroTik RouterOS used for packet manipulation. This functionality allows network administrators to perform various actions on packets as they pass through a router.

Changing the Maximum Segment Size (MSS) is essential for optimizing TCP connections, especially in scenarios where packets may need to traverse networks with differing MTU sizes. By adjusting the MSS within the mangle table, you can help prevent packet fragmentation that can lead to inefficiencies or dropped connections.

Marking packets is another critical action you can carry out within the mangle table. This allows for traffic identification and categorization, enabling priorities to be set based on specific criteria. Marking packets facilitates Quality of Service (QoS) management and efficient bandwidth usage, as it helps the router deal with different types of traffic more effectively.

The feature to "jump" in the firewall mangle refers to the ability to redirect packet processing to another chain for further handling. This can be particularly useful for organizing complex firewall rules or for performing specific actions on different categories of traffic based on predefined conditions.

Since '/ip firewall mangle' encompasses all these actions—changing MSS, marking packets, and jumping to other chains—the correct response encompasses all functions available, indicating that