CompTIA Network+ Network+ Wireless Networking Standards 2

Question 1

Which 802.11 amendment introduced Multi-User MIMO (MU-MIMO) allowing simultaneous transmission to multiple clients?

Accepted Answer

802.11ac Wave 2

Answer

802.11ac Wave 2 introduced MU-MIMO, enabling an AP to transmit to multiple clients simultaneously rather than one at a time.

Question 2

What is the maximum number of spatial streams supported by 802.11ac?

Accepted Answer

8

Answer

802.11ac supports up to 8 spatial streams, though most consumer devices implement 3 or 4.

Question 3

A technician needs to deploy Wi-Fi in a high-density stadium environment. Which 802.11ax (Wi-Fi 6) feature most directly addresses this need?

Accepted Answer

OFDMA

Answer

OFDMA (Orthogonal Frequency Division Multiple Access) in Wi-Fi 6 divides channels into sub-channels called Resource Units, allowing many clients to transmit simultaneously.

Question 4

Which wireless standard operates exclusively in the 60 GHz band and is designed for short-range, high-bandwidth applications?

Accepted Answer

802.11ad

Answer

802.11ad (WiGig) operates in the 60 GHz band, offering multi-gigabit speeds over very short distances (typically within a room).

Question 5

What modulation scheme does 802.11ax (Wi-Fi 6) support that 802.11ac does not?

Accepted Answer

1024-QAM

Answer

Wi-Fi 6 (802.11ax) introduces 1024-QAM, allowing more bits per symbol and higher throughput compared to 802.11ac's maximum of 256-QAM.

CompTIA Practice Test

CompTIA Practice Test

CompTIA Network+ Network+ Wireless Networking Standards 2