What information is transmitted in the Beacon management frames of an HT access point to communicate about backward compatibility with ERP and HR/DSSS stations? (Choose 2)

Question

Options

• AHT Protection mode
• BNon-ERP Present field
• CSecondary channel offset
• DRIFS mode
• EPower save mode of clients

• A
  74% (23)
• B
  6% (2)
• C
  3% (1)
• E
  16% (5)

Explanation

1. RIFS Mode ( 1 bit) Indicates whether the use of reduced interframe space is permitted within the BSS. RIFS can be used only when a HT Greenfield network is in place. 0 - RIFS is prohibited 1- RIFS is permitted 5. HT Protection Indicates protection requirements of HT transmissions. 0 - no protection mode (Green Field mode) 1 - nonmember protection mode 2 - 20 MHz protection mode 3- non-HT mixed mode https://mrncciew.com/2014/11/04/cwap-ht-operations-ie/

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