a. What is the main promise of 802.11ax over 802.11ac?

28a.) What is the main promise of 802.11ax over 802.11ac?

a. Higher speed

b. The ability to serve more users

c. MIMO

d. Mu-MIMO

b. Why is the 60 GHz  unlicensed band attractive?

28b.) The 60 GHz unlicensed service band offers ________ compared to lower-frequency service bands.

a. More speed per channel

b. Greater propagation distance

c. Greater ability to penetrate walls

d. All of the above

28b.) Which of the following works in the 60 GHz  unlicensed service band?

a. 802.11ac

b. 802.11ad

c. 802.11ax

d. All of the above

c. What problems does it pose for Wi-Fi?

28c.) The main problem with the 60 GHz unlicensed band is that ________.

a. It cannot be used outside

b. It does not support M I M O

c. Transmission speed is low

d. Transmission distance is short

d. How is 802.11ay likely to be better than 802.11ad?

28d.) Which of the following is true of 802.11ay over 802.11ad?

a. Greater propagation speed

b. Greater propagation distance

c. Both A and B

d. Neither A nor B