ACI - Module 5 Part 5

Which IEEE standard, released in 2013, supports 2.4 GHz and 5 GHz frequency bands and introduces MU-MIMO technology?

• IEEE 802.11n

• IEEE 802.11ac

• IEEE 802.11ax

• IEEE 802.11g

Answer explanation

IEEE 802.11ac, released in 2013, supports 2.4 GHz and 5 GHz bands and introduces MU-MIMO technology.

What is the main focus of the IEEE 802.11ax (Wi-Fi 6) standard?

• Increasing data rates up to 600 Mbps

• Improving overall network capacity, efficiency, and performance in environments with numerous connected devices

• Introducing MU-MIMO technology

• Enhancing signal strength and reliability

Answer explanation

The main focus of the IEEE 802.11ax (Wi-Fi 6) standard is to improve overall network capacity, efficiency, and performance in environments with numerous connected devices.

Which technology does IEEE 802.11ax introduce to divide the available frequency spectrum into multiple orthogonal subcarriers?

• MU-MIMO

• Beamforming

• OFDMA

• TWT

Answer explanation

OFDMA is the technology introduced by IEEE 802.11ax to divide the available frequency spectrum into multiple orthogonal subcarriers.

What is one of the benefits of the IEEE 802.11ac standard?

• Reducing power consumption in IoT devices

• Allowing data rates up to several gigabits per second

• Dividing the available frequency spectrum into multiple orthogonal subcarriers

• Increasing data rates up to 600 Mbps

Answer explanation

The IEEE 802.11ac standard allows data rates up to several gigabits per second, making it one of the benefits of this standard.

Which feature is incorporated in both IEEE 802.11ac and IEEE 802.11ax to enhance signal strength and reliability?

• TWT

• Beamforming

• OFDMA

• MU-MIMO

Answer explanation

MU-MIMO is incorporated in both IEEE 802.11ac and IEEE 802.11ax to enhance signal strength and reliability by allowing multiple devices to communicate simultaneously.

What does long-range fixed wireless enable?

• Data transmission over short distances with physical cables

• Data transmission over long distances without physical cables

• Data transmission over long distances with physical cables

• Data transmission over short distances without physical cables

Answer explanation

Data transmission over long distances without physical cables enables by long-range fixed wireless technology.

Which of the following is NOT a consideration for long-range fixed wireless?

• Licensed frequency

• Unlicensed frequency

• Power

• Cable length

Answer explanation

Cable length is NOT a consideration for long-range fixed wireless as it pertains to physical cables, which are not used in wireless communication.

What is a characteristic of licensed long-range fixed wireless?

• Uses frequency bands open for public use

• Requires compliance with regulatory authority

• Involves lower equipment costs

• Higher likelihood of interference from other devices

Answer explanation

Requires compliance with regulatory authority

Which frequency bands are typically used in unlicensed long-range fixed wireless?

• 1.2 GHz or 2.4 GHz

• 2.4 GHz or 5 GHz

• 3.6 GHz or 4.8 GHz

• 5 GHz or 6.2 GHz

Answer explanation

In unlicensed long-range fixed wireless, the typical frequency bands used are 2.4 GHz or 5 GHz, making the correct choice 2.4 GHz or 5 GHz.

What is a potential disadvantage of unlicensed long-range fixed wireless?

• Higher equipment costs

• Reduced interference from other users

• Higher likelihood of interference from other devices

• Requires specialized licenses

Answer explanation

A potential disadvantage of unlicensed long-range fixed wireless is the higher likelihood of interference from other devices.