Which of the following assists with airflow in a server? (Select TWO).

Riser cards are PCIe expansion adapters used to mount additional add-in cards inside a server and have no function related to directing or managing airflow.

Water cooling is a liquid-based thermal dissipation system and is not an airflow component; it replaces air movement as the thermal transfer medium rather than directing it.

A shroud is a plastic or metal guide that channels cool air directly over heat-generating components such as CPUs and DIMMs, preventing cool and hot air from mixing inside the chassis and improving thermal efficiency.

A baffle is a physical divider installed inside the server chassis that creates a barrier between the hot and cold airflow zones, forcing air to travel a defined path from intake fans through components to the exhaust, preventing recirculation of hot air.

Heat sinks passively dissipate heat away from a component via conduction and convection but do not control or direct the path of airflow within the server chassis.