Which three are valid actions that a FortiSwitch access control list (ACL) can apply to...

According to theFortiSwitchOS 7.6 Administration Guideand theNSE 5 FortiSwitch 7.6 Administrator Study Guide, Access Control Lists (ACLs) are used to perform multiple actions on matching traffic as it passes through the switch pipeline. The documentation explicitly categorizes these valid actions into three distinct functional groups:Traffic processing,QoS (Quality of Service), andVLANmodifications.

Traffic Processing (Option C):This is a primary category of ACL actions. It includes operations that dictate how a frame is physically handled or monitored. Valid specific actions under this category includedrop(discarding the packet),count(incrementing a packet counter for statistics),redirect(sending the packet to a specific interface or CPU queue), andmirror(copying the traffic to a monitor port).

QoS (Option E):The QoS category allows the switch to manage traffic prioritization and bandwidth. ACLs can be configured toset the egress queue(assigning a frame to one of the eight priority queues),remark CoS (Class of Service)orDSCP (Differentiated Services Code Point)values in the frame header, and applypolicersfor rate limiting.

VLAN / Set outer VLAN tags (Option D):Under the VLAN category, the most notable action is the ability toset outer VLAN tagson frames. This is particularly useful in scenarios involving Q-in-Q tunneling or service provider environments where a secondary tag is required for transport across a managed fabric.

It is important to note thatAssign the VLAN ID (Option A)is typically a function ofNAC (Network Access Control)orDynamic VLAN Assignmentrather than a standard ACL action; within an ACL context, vlan-id is primarily used as aclassifier(to match traffic) rather than an action.Quarantine devices (Option B)is a high-level security response triggered by the FortiGate NAC engine and is not a direct action available within the FortiSwitch ACL configuration menu.