Zach, a network administrator, needs to purchase a new switch to support VoIP phones and wireless access points in a new building. Which of the following features are the MOST important for the new…

PoE (IEEE 802.3af/at) delivers electrical power over Ethernet cabling, eliminating the need for separate power adapters for VoIP phones and WAPs - a critical cost and logistics consideration. QoS ensures voice packets are prioritized over other data traffic to prevent jitter, latency, and packet loss that would degrade call quality. Together they are the foundational requirements for a VoIP and wireless infrastructure switch.

LACP (link aggregation) and OSPF (a routing protocol) are useful in core network design but are not the primary requirements for a switch serving VoIP endpoints and WAPs.

802.1x is port-based authentication and 802.11n is a wireless standard - neither is a switch-level feature directly needed to support VoIP phones or WAPs receiving power.

NAT (address translation) is typically a router or firewall function, and VTP (VLAN Trunking Protocol) is a VLAN management protocol - neither is the most important feature for this deployment scenario.