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Difficulty: MediumWireless Networking Standards and Technologies

A network technician is performing an inventory audit of legacy and modern wireless network equipment. Match each IEEE 802.11 wireless standard on the left with its correct operating frequency band and maximum theoretical throughput specification on the right.

  • IEEE 802.11b2.4 GHz band only, maximum theoretical throughput of 11 Mbps
  • IEEE 802.11a5 GHz band only, maximum theoretical throughput of 54 Mbps
  • IEEE 802.11g2.4 GHz band only, maximum theoretical throughput of 54 Mbps
  • IEEE 802.11ac5 GHz band only, multi-gigabit theoretical throughput using wide channels

Answer

IEEE 802.11b pairs with 2.4 GHz band at 11 Mbps; IEEE 802.11a pairs with 5 GHz band at 54 Mbps; IEEE 802.11g pairs with 2.4 GHz band at 54 Mbps; IEEE 802.11ac pairs with 5 GHz band with multi-gigabit throughput.
Each standard is characterized by its native operating frequency and maximum theoretical bandwidth. 802.11b operates at 2.4 GHz up to 11 Mbps; 802.11a operates at 5 GHz up to 54 Mbps; 802.11g operates at 2.4 GHz up to 54 Mbps; and 802.11ac operates at 5 GHz providing multi-gigabit speeds.

Step-by-Step Solution

1
Differentiate legacy 2.4 GHz standards by throughput.
802.11b supports up to 11 Mbps, whereas 802.11g upgraded 2.4 GHz performance to 54 Mbps.
Both standards use the 2.4 GHz ISM band, but 802.11g introduced OFDM modulation to increase speed.
2
Differentiate 5 GHz standards by speed and channel capability.
802.11a provides up to 54 Mbps on 5 GHz, while 802.11ac delivers multi-gigabit performance exclusively on 5 GHz.
802.11a was an early 5 GHz standard; 802.11ac enhanced 5 GHz operations with wider channel bonding and higher-order QAM.

Key Concept

IEEE 802.11 Wireless Standards Specifications
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Topics

Wireless Networking Standards and Technologies

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