A network engineer has been tasked to design an IPV6 wireless sensor network using IEEE 802.15.4 to support an IoT project. Which two protocols does the engineer need to utilize for this design? (Choo

802.11ax (Wi-Fi 6) provides the higher-throughput wireless backhaul infrastructure at the gateway layer that bridges aggregated sensor data from the low-power 802.15.4 mesh to the enterprise or internet network, completing the end-to-end IPv6 path.

802.11ac (Wi-Fi 5) is a 5 GHz WLAN standard unrelated to the IEEE 802.15.4 sensor stack and does not provide IPv6 adaptation for low-power constrained devices.

Generic 802.11 (Wi-Fi) is a separate WLAN standard that operates independently of IEEE 802.15.4 and lacks the header compression and fragmentation mechanisms needed for IPv6 on constrained sensor nodes.

6LoWPAN (IPv6 over Low-Power Wireless Personal Area Networks) is the mandatory adaptation layer defined in RFC 4944 that compresses IPv6 headers and fragments packets to fit within the 127-byte maximum frame size of IEEE 802.15.4 links, enabling native IPv6 addressing on constrained sensor nodes.

VPN is a tunneling and security overlay technology used for private remote access and is not a protocol required in the design of an IEEE 802.15.4 IPv6 sensor network.