352-001 · Question #445
Which two IEEE standards are commonly used at the data link layer for an access network, in an loT environment? (Choose 2)
The correct answer is A. 802.11 C. 802.15.4. IEEE 802.11 and 802.15.4 are the two most widely deployed data link layer standards for IoT access networks, covering higher-bandwidth Wi-Fi and low-power sensor network use cases respectively.
Question
Which two IEEE standards are commonly used at the data link layer for an access network, in an loT environment? (Choose 2)
Options
- A802.11
- B802.16
- C802.15.4
- D1901.2 NB-PLC
- E802.22
How the community answered
(62 responses)- A92% (57)
- B2% (1)
- D5% (3)
- E2% (1)
Why each option
IEEE 802.11 and 802.15.4 are the two most widely deployed data link layer standards for IoT access networks, covering higher-bandwidth Wi-Fi and low-power sensor network use cases respectively.
IEEE 802.11 defines Wi-Fi and is widely used in IoT for devices that require higher-bandwidth wireless access over short to medium ranges.
IEEE 802.16 (WiMAX) targets broadband metropolitan area wireless access and is not a standard data link layer technology for IoT access networks.
IEEE 802.15.4 defines the PHY and MAC layers for low-rate wireless personal area networks and is the foundation for Zigbee and 6LoWPAN, both pervasive in IoT sensor deployments.
IEEE 1901.2 NB-PLC is a narrowband power line communication standard specific to smart grid applications and is not a general-purpose IoT access layer technology.
IEEE 802.22 defines cognitive radio WRAN technology for rural broadband coverage and is not used as an IoT access network data link standard.
Concept tested: IEEE data link layer standards for IoT access networks
Source: https://standards.ieee.org/ieee/802.15.4/7029/
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