ACI - Module 5 Part 6

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 the range of wireless networks

• Improving overall network capacity, efficiency, and performance

• Reducing the cost of wireless devices

• Enhancing the security of wireless networks

Answer explanation

Improving overall network capacity, efficiency, and performance

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

• MU-MIMO

• Beamforming

• OFDMA

• TWT

Answer explanation

IEEE 802.11ax introduces OFDMA to divide the available frequency spectrum into multiple orthogonal subcarriers.

What is the purpose of TWT (Target Wake Time) in IEEE 802.11ax?

• To increase data rates

• To enhance signal strength

• To reduce power consumption in IoT devices

• To improve modulation techniques

Answer explanation

To reduce power consumption in IoT devices

Which IEEE standard can achieve data rates up to 600 Mbps and is especially useful in congested wireless environments?

• IEEE 802.11n

• IEEE 802.11ac

• IEEE 802.11ax

• IEEE 802.11g

Answer explanation

IEEE 802.11n can achieve data rates up to 600 Mbps and is especially useful in congested wireless environments.

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

Long-range fixed wireless enables data transmission over long distances without physical cables.

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 frequency in long-range fixed wireless?

• Open for public use without specialized licenses

• Higher likelihood of interference from other devices

• Allocated by a regulatory authority

• Typically involves lower equipment costs

Answer explanation

Licensed frequency in long-range fixed wireless is allocated by a regulatory authority, ensuring controlled and authorized usage.

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

• 1.2 GHz and 2.4 GHz

• 2.4 GHz and 5 GHz

• 3.5 GHz and 4.5 GHz

• 5 GHz and 6 GHz

Answer explanation

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

What is a common use of long-range fixed wireless technology?

• Establishing high-speed internet connectivity in areas where traditional wired solutions are feasible

• Establishing high-speed internet connectivity in areas where traditional wired solutions are not feasible

• Establishing low-speed internet connectivity in urban areas

• Establishing low-speed internet connectivity in rural areas

Answer explanation

Establishing high-speed internet connectivity in areas where traditional wired solutions are not feasible is a common use of long-range fixed wireless technology.