Wireless Networking Standards and Technologies

The video tutorial covers the evolution of wireless network standards, starting with 802.11a and 802.11b, and progressing through 802.11g, 802.11n, 802.11ac, and 802.11ax. It explains the differences in frequency ranges, speeds, and technologies like MIMO and OFDMA. Practical considerations for setting up wireless networks, including antenna types and regulatory issues, are discussed. The video also introduces RFID and NFC technologies, highlighting their applications in everyday life.

What organization is responsible for the standards of wireless networks?

• ITU

• FCC

• IEEE 802 Committee

• Wi-Fi Alliance

Which frequency range does the 802.11a standard operate in?

• 900 MHz

• 5 GHz

• 2.4 GHz

• 1.8 GHz

Why might 802.11b be preferred over 802.11a in certain environments?

• Higher speed

• Better range in crowded areas

• Lower cost

• Less interference

What was a significant improvement introduced with the 802.11n standard?

• Introduction of MIMO technology

• Exclusive use of 5 GHz

• Use of 2.4 GHz only

• Backward compatibility with 802.11a

What is the maximum theoretical throughput of 802.11ac?

• 3.2 Gbps

• 6.9 Gbps

• 9.6 Gbps

• 1.2 Gbps

Which technology does 802.11ax introduce to improve performance in crowded areas?

• Beamforming

• MIMO

• OFDMA

• Channel bonding

What type of antenna is recommended for connecting two buildings wirelessly?

• Patch

• Dipole

• Yagi

• Omnidirectional

What is a common use of RFID technology?

• Streaming video

• Unlocking doors with access badges

• Wireless internet access

• Bluetooth pairing

How does NFC technology enhance mobile devices?

• By improving signal range

• By enabling two-way communication for payments

• By increasing battery life

• By boosting processing speed

What should be considered when installing outdoor antennas?

• Proximity to power sources

• Type of internet service

• Color of the antenna

• Material of the building