2.3 Wireless Standards Flashcards
Which Wi-Fi standard operates only on the 5 GHz frequency and has a max speed of 54 Mbps?
802.11a.
Which Wi-Fi standard operates only on the 2.4 GHz frequency and has a max speed of 11 Mbps?
802.11b.
Which Wi-Fi standard improved upon 802.11b by increasing the speed to 54 Mbps while still using 2.4 GHz?
802.11g.
What major feature was introduced with 802.11n (Wi-Fi 4)?
MIMO (Multiple Input Multiple Output) for multiple antennas.
Which Wi-Fi standard operates on both 2.4 GHz and 5 GHz and supports speeds up to 600 Mbps?
802.11n (Wi-Fi 4).
What major feature was introduced with 802.11ac (Wi-Fi 5)?
MU-MIMO (Multi-User Multiple Input Multiple Output).
Which Wi-Fi standard operates only on 5 GHz and supports speeds up to 6.9 Gbps?
802.11ac (Wi-Fi 5).
Which Wi-Fi standard supports 2.4 GHz, 5 GHz, and 6 GHz (Wi-Fi 6E) with speeds up to 9.6 Gbps?
802.11ax (Wi-Fi 6).
Which Wi-Fi standards operate only on the 5 GHz frequency?
802.11a and 802.11ac.
What is the benefit of using MIMO technology in wireless networks?
It improves data transmission by using multiple antennas.
What is the difference between MIMO and MU-MIMO?
MIMO supports multiple antennas, while MU-MIMO allows multiple devices to communicate simultaneously.
Which Wi-Fi standard introduced MU-MIMO for improved efficiency?
802.11ac (Wi-Fi 5).
What is a common source of radio frequency interference (RFI) in the 2.4 GHz spectrum?
Microwaves, baby monitors, and cordless phones.
How does Wi-Fi 6 (802.11ax) improve upon previous standards?
It offers higher efficiency, supports all Wi-Fi bands (2.4, 5, and 6 GHz), and provides better performance in crowded environments.
Which Wi-Fi standard is fully backward compatible with all previous standards?
802.11ax (Wi-Fi 6).
How can you reduce interference in a 2.4 GHz network?
Use non-overlapping channels (1, 6, and 11).
What is the effect of physical barriers such as concrete walls on Wi-Fi signals?
They cause signal attenuation and reduce signal strength.
What is channel bonding in 5 GHz networks?
Combining multiple channels (40 MHz, 80 MHz, 160 MHz) to increase data speeds.
What is the downside of channel bonding?
It increases the risk of interference by reducing the number of available non-overlapping channels.
Why do dual-band and tri-band routers improve Wi-Fi performance?
They allow devices to use both 2.4 GHz and 5 GHz, reducing congestion.
