350-401 Question #471: Real Exam Question with Answer & Explanation

Question

Which three elements determine Air Time efficiency? (Choose three)

Options

• Aevert-driven RRM
• Bdata rate (modulation density) or QAM
• Cchannel bandwidth
• Dnumber of spatial streams and spatial reuse
• ERF group leader
• Fdynamic channel assignment

Explanation

Air Time efficiency in wireless networks is primarily determined by data rate (modulation density), channel bandwidth, and the number of spatial streams combined with spatial reuse techniques.

Common mistakes.

• A. Event-driven RRM (Radio Resource Management) is a mechanism to adapt RF parameters, which can improve efficiency, but it is not a fundamental element that determines the intrinsic airtime efficiency itself.
• E. An RF group leader is a functional role in a Cisco RRM deployment responsible for managing RF parameters for a group of APs, but it does not directly determine airtime efficiency.
• F. Dynamic Channel Assignment (DCA) is an RRM feature that aims to reduce interference by assigning optimal channels, thereby improving efficiency, but it is a management function rather than a direct element that determines how much data can be carried over the air.

Concept tested. Wireless Air Time efficiency factors

Reference. https://www.cisco.com/c/en/us/products/collateral/wireless/aironet-3800-series-access-points/white-paper-c11-738988.html

No community discussion yet for this question.