200-301 · Question #735
What happens when an 802.11a node broadcasts within the range of an 802.11g access point?
The correct answer is D. The node transmits, but the access point is unable to receive. 802.11a and 802.11g networks operate on different frequency bands, making them incompatible for direct communication.
Question
Options
- AThe access point transmits, but the node is unable to receive.
- BA connection occurs
- CBoth the node and the access point are unable to transmit.
- DThe node transmits, but the access point is unable to receive.
How the community answered
(30 responses)- A3% (1)
- C3% (1)
- D93% (28)
Why each option
802.11a and 802.11g networks operate on different frequency bands, making them incompatible for direct communication.
The 802.11g access point and 802.11a node operate on different frequency bands, so neither can typically hear or receive transmissions from the other, meaning the AP cannot transmit and be heard by the node.
A connection cannot occur because 802.11a and 802.11g use different radio frequency bands (5 GHz and 2.4 GHz respectively), rendering them fundamentally incompatible for direct communication.
Both devices are capable of transmitting within their respective frequency bands; however, they cannot communicate with each other because they are operating on different, incompatible bands.
An 802.11a node operates on the 5 GHz band, while an 802.11g access point operates on the 2.4 GHz band, making them incompatible and unable to receive transmissions from each other.
Concept tested: 802.11a vs 802.11g frequency bands
Source: https://www.cisco.com/c/en/us/td/docs/wireless/access_point/802_11ac_deploy/guide/802_11ac_deploy_guide.html
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