Podcast
Questions and Answers
Which IEEE committee is responsible for the standards of wireless networks?
Which IEEE committee is responsible for the standards of wireless networks?
- IEEE 802.16 committee
- IEEE 802.3 committee
- IEEE 802.15 committee
- IEEE 802.11 committee (correct)
What frequency range does the 802.11a standard operate in?
What frequency range does the 802.11a standard operate in?
- 6 gigahertz
- 2.4 gigahertz
- 3.5 gigahertz
- 5 gigahertz (correct)
Which organization is responsible for testing the interoperability of different wireless devices?
Which organization is responsible for testing the interoperability of different wireless devices?
- NFC Forum
- IEEE 802.11 committee
- Wi-Fi Alliance (correct)
- Bluetooth SIG
What was the speed of the 802.11a wireless standard upon its release?
What was the speed of the 802.11a wireless standard upon its release?
What is the purpose of RFID in manufacturing or inventory management?
What is the purpose of RFID in manufacturing or inventory management?
What type of RFID tag is typically used in access badges?
What type of RFID tag is typically used in access badges?
How do RFID tags communicate without a battery?
How do RFID tags communicate without a battery?
What is the purpose of NFC in mobile devices?
What is the purpose of NFC in mobile devices?
What is the primary function of a third party in installing outdoor networks?
What is the primary function of a third party in installing outdoor networks?
What does an active or powered RFID tag have that passive tags do not?
What does an active or powered RFID tag have that passive tags do not?
How is NFC utilized in unlocking doors?
How is NFC utilized in unlocking doors?
What is the significance of using NFC in checking out at a store?
What is the significance of using NFC in checking out at a store?
Which wireless standard operates at 5 GHz frequencies and has a shorter range due to signal absorption?
Which wireless standard operates at 5 GHz frequencies and has a shorter range due to signal absorption?
Which wireless standard operates in the 2.4 GHz range with a maximum speed of 11 Mbps?
Which wireless standard operates in the 2.4 GHz range with a maximum speed of 11 Mbps?
Which wireless standard was released in 2003 as a backward-compatible upgrade to 802.11b with a maximum speed of 54 Mbps?
Which wireless standard was released in 2003 as a backward-compatible upgrade to 802.11b with a maximum speed of 54 Mbps?
Which wireless standard upgrades 802.11a, b, and g, offering a maximum theoretical throughput of 600 Mbps and introduces Multiple Input Multiple Output (MIMO) technology?
Which wireless standard upgrades 802.11a, b, and g, offering a maximum theoretical throughput of 600 Mbps and introduces Multiple Input Multiple Output (MIMO) technology?
Which wireless standard operates exclusively in the 5 GHz band, supports up to 160 MHz of channel bandwidth, and offers a maximum total throughput of nearly 7 Gbps?
Which wireless standard operates exclusively in the 5 GHz band, supports up to 160 MHz of channel bandwidth, and offers a maximum total throughput of nearly 7 Gbps?
Which wireless standard released in 2009 operates in both 2.4 GHz and 5 GHz bands?
Which wireless standard released in 2009 operates in both 2.4 GHz and 5 GHz bands?
Which wireless standard supports Multi-User MIMO, allowing multiple users to communicate over multiple input and output simultaneously?
Which wireless standard supports Multi-User MIMO, allowing multiple users to communicate over multiple input and output simultaneously?
Which wireless standard uses signaling modulation to increase the amount of data that can be transferred at any particular time?
Which wireless standard uses signaling modulation to increase the amount of data that can be transferred at any particular time?
Which frequency range is used by more devices, leading to potential frequency conflicts?
Which frequency range is used by more devices, leading to potential frequency conflicts?
'Wi-Fi 4' is an upgrade to which previous wireless standards?
'Wi-Fi 4' is an upgrade to which previous wireless standards?
What technology does 'Wi-Fi 5' (802.11ac) introduce to allow for more data transfer at the same time?
What technology does 'Wi-Fi 5' (802.11ac) introduce to allow for more data transfer at the same time?
Which standard operates at both 2.4 gigahertz and 5 gigahertz frequencies and supports orthogonal frequency division multiple access (OFDMA) technology?
Which standard operates at both 2.4 gigahertz and 5 gigahertz frequencies and supports orthogonal frequency division multiple access (OFDMA) technology?
Which standard supports up to four streams of multiple input and multiple output (MIMO) and has a total theoretical throughput per stream of 150 megabits per second or a maximum theoretical throughput of 600 megabits per second?
Which standard supports up to four streams of multiple input and multiple output (MIMO) and has a total theoretical throughput per stream of 150 megabits per second or a maximum theoretical throughput of 600 megabits per second?
Which standard has a maximum theoretical throughput maximum of 6.9 gigabits per second and uses 5 gigahertz technology?
Which standard has a maximum theoretical throughput maximum of 6.9 gigabits per second and uses 5 gigahertz technology?
Which standard has a maximum theoretical throughput of 9.6 gigabits per second and operates at both 2.4 gigahertz and 5 gigahertz frequencies?
Which standard has a maximum theoretical throughput of 9.6 gigabits per second and operates at both 2.4 gigahertz and 5 gigahertz frequencies?
Which standard introduced orthogonal frequency division multiple access (OFDMA) technology to improve communication efficiency in areas with large numbers of people?
Which standard introduced orthogonal frequency division multiple access (OFDMA) technology to improve communication efficiency in areas with large numbers of people?
Which standard had a maximum theoretical throughput per stream of 54 megabits per second and operated on 5 gigahertz frequencies?
Which standard had a maximum theoretical throughput per stream of 54 megabits per second and operated on 5 gigahertz frequencies?
Which standard had a maximum theoretical throughput of 54 megabits per second and was an upgrade to 802.11b?
Which standard had a maximum theoretical throughput of 54 megabits per second and was an upgrade to 802.11b?
Which standard had a maximum theoretical throughput of 11 megabits per second and operated at 2.4 gigahertz?
Which standard had a maximum theoretical throughput of 11 megabits per second and operated at 2.4 gigahertz?
What is the range of a Wi-Fi access point using built-in antennas?
What is the range of a Wi-Fi access point using built-in antennas?
What technology supports eight downloadable streams of multi-user MIMO at 867 megabits per second for each stream?
What technology supports eight downloadable streams of multi-user MIMO at 867 megabits per second for each stream?
What form of communication was introduced in the standard 802.11ax to improve communication efficiency in areas with large numbers of people?
What form of communication was introduced in the standard 802.11ax to improve communication efficiency in areas with large numbers of people?
Study Notes
- 802.11ac and 802.11ax access points support both 2.4 gigahertz and 5 gigaherz frequencies, while communication at 2.4 gigahertz uses the 802.11n standard and 5 gigahertz uses the ac or ax standard.
- The 802.11ax or Wi-Fi 6 standard, which arrived in February 2021, operates at 2.4 gigahertz and 5 gigahertz frequencies and supports orthogonal frequency division multiple access (OFDMA) technology.
- OFDMA is a new form of communication introduced in 802.11ax to improve communication efficiency in areas with large numbers of people.
- 802.11a, which operated on 5 gigahertz frequencies, had a maximum theoretical throughput per stream of 54 megabits per second.
- 802.11b, operating at 2.4 gigahertz, had a maximum theoretical throughput of 11 megabits per second.
- 802.11g, an upgrade to 802.11b, had a maximum theoretical throughput of 54 megabits per second.
- 802.11n, which operates in both 2.4 gigahertz and 5 gigahertz frequency ranges, supports up to four streams of multiple input and multiple output (MIMO) and has a total theoretical throughput per stream of 150 megabits per second or a maximum theoretical throughput of 600 megabits per second.
- 802.11ac, which is a 5 gigahertz technology, supports eight downloadable streams of multi-user MIMO at 867 megabits per second for each stream and has a maximum theoretical throughput maximum of 6.9 gigabits per second.
- 802.11ax, also known as Wi-Fi 6, operates at both 2.4 gigahertz and 5 gigahertz frequencies and supports eight streams, each with a maximum theoretical throughput per stream of 1.2 gigabits per second and a maximum theoretical throughput of all streams at 9.6 gigabits per second.
- The range of a Wi-Fi access point is about 40-50 meters using built-in antennas, but for long-range fixed wireless networks, directional antennas may be needed and regulations regarding frequencies and signal strength must be considered.
- Installing an antenna outside for a wireless network requires safety considerations, such as being aware of power sources and lightning protection.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge about Wi-Fi standards, access points, and frequency bands with this quiz. Explore the differences between 802.11n, 802.11ac, and 802.11ax standards along with their operating frequencies.
