Which two functions are performed by a Layer 2 switch? (Choose two.)

A Layer 2 switch operates at the Data Link layer of the OSI model and primarily uses MAC addresses for forwarding decisions. Therefore, "makes forwarding decisions based on the MAC address of a packet" is correct. Switches learn MAC addresses and build a MAC address table to forward frames to the correct destination port within the same broadcast domain (VLAN). This means a Layer 2 switch can "move packets within a VLAN." "Acts as a central point for association and authentication servers" describes functions typically handled by dedicated servers or network access control (NAC) systems, not a standard Layer 2 switch. "Selects the best route between networks on a WAN" is a function of a router, which operates at Layer 3 (Network layer). "Moves packets between different VLANs" requires Layer 3 routing capabilities, which a standard Layer 2 switch does not possess; this function is performed by a router or a Layer 3 switch.