300-365 Question #171: Real Exam Question with Answer & Explanation

The correct answer is A: 802.11e. IEEE 802.11e defines TSPEC as the traffic specification mechanism that links higher-layer QoS protocols to the MAC-layer channel access function in wireless networks.

Wireless Deployment

Question

Which standard specifies TSPEC to provide the management link between higher QoS protocols and the channel access function?

Options

A802.11e
B802.11a
C802.11ac
D802.11af

Explanation

IEEE 802.11e defines TSPEC as the traffic specification mechanism that links higher-layer QoS protocols to the MAC-layer channel access function in wireless networks.

Common mistakes.

B. 802.11a defines the 5 GHz OFDM physical layer specification and contains no QoS or traffic specification mechanisms.
C. 802.11ac defines very high throughput (VHT) PHY operation in the 5 GHz band and does not define TSPEC or the QoS management framework.
D. 802.11af defines operation in TV white space (TVWS) spectrum for long-range applications and has no relationship to TSPEC or QoS channel access management.

Concept tested. TSPEC definition and 802.11e QoS framework

Reference. https://standards.ieee.org/ieee/802.11e/3099/

Topics

#TSPEC#802.11e#QoS standards#channel access

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