Which two IEEE standards are commonly used at the data link layer for an access network, in an IoT environment? (Choose two.)

IEEE 802.11 (Wi-Fi) is ubiquitous in both enterprise and consumer IoT deployments, providing sufficient bandwidth and compatibility for a wide range of IoT devices at the data link layer.

IEEE 802.15.4 defines the PHY and MAC layers for low-rate wireless personal area networks and is the foundation for IoT protocols such as Zigbee and 6LoWPAN, making it a core standard for constrained IoT devices that require low power consumption and short-range communication.

IEEE 802.16 (WiMAX) is a broadband wireless standard designed for wide-area metropolitan coverage and is not commonly deployed as an IoT access technology.

IEEE 1901.2 NB-PLC is a narrowband power line communication standard used in smart grid and utility metering applications, not a general-purpose IoT access network standard.

IEEE 802.22 targets wireless regional area networks using unused TV spectrum (white spaces) for rural broadband and is not used for typical IoT access network deployments.