WiFi & HaLow

Question 1

How many overlapping WiFi channels are there for 2.4Ghz Band?

14

12

11

3

Answer 1

11

Question 2

What is the operating frequency of HaLow?

5 Ghz

900 Hz

Sub-1 Ghz

2.4 Ghz

Answer 2

Sub-1 Ghz

Question 3

All 802.11 devices are compatible with each other.

Answer 3

False

Question 4

What is the typical range of HaLow compared to traditional Wi-Fi?

Same range

Unlimited range

Longer range

Shorter range

Answer 4

Longer range

Question 5

WiFi HaLow is also known as?

Answer 5

802.11ah

Question 6

Which standard does HaLow follow for wireless communication?

Answer 6

802.11ah

Question 7

Which if the following channel access technique is used in HaLow?

Answer 7

Carrier Sense Multiple Access with Collision Avoidance

Question 8

Consider the following two statements and select the appropriate option below:
Statement A: Centralized and Distributed Authentication Control are introduced in HaLow to overcome collisions between the devices in the network.
Statement B: HaLow introduced mechanisms to limit the set of devices accessing the channel and to spread their access attempts over a long period of time.

Answer 8

Statement B is true, but Statement A is false.

Question 9

Which of the following is included in the beacon to notify stations about the buffered frames?

Answer 9

Traffic Indication Map

Question 10

Which of the following power management modes are available for stations in 802.11 networks? (You can choose more than one answer) [unverified]

Answer 10

Power Save Mode

Active Mode

Question 11

How does HaLow address the shortage of Duration/ID field that is required for Network Allocation Vector?

Answer 11

HaLow uses a mechanism called Response Indication Deferral.

Question 12

Using which one of the following parameters will the modulation and coding scheme be decided?

Answer 12

Signal to Noise Ratio

Question 13

The “Data Unit” get larger as it goes _____ the OSI stack.

Answer 13

down

Question 14

Select the standards that are typically common across IEEE 802.

Answer 14

802.1 Bridging
802.2 Logical Link Control

Question 15

Select the true statements for WiFi

Answer 15

Its frequency ranges from 2.4GHz to 2.5GHz

The 5GHz Band has a 150MHz bandwidth

Question 16

What is the main advantages of HaLow over traditional Wi-Fi technologies?

Answer 16

Lower power consumption

Greater range

Question 17

The “Data Unit” get larger as it goes _____ the OSI stack.

Answer 17

down

Question 18

Which of the following power management modes are available for stations in 802.11 networks? (You can choose more than one answer)

Answer 18

Power Save Mode

Active Mode

Question 19

Which of the frames are transmitted by the Access Point when a node is attempting to join a Basic Service Set using active scanning? (You can select more than one)

Answer 19

Probe Response Frame

Association Response Frame

Question 20

Which of the following packets help in solving the hidden node problem in 802.11 networks? (You can select more than one answer)

Answer 20

Clear To Send Packet

Request To Send Packet

Question 21

Which of the following are advantages of using Relays in HaLow? (select the correct answers)

Answer 21

Relays improve reliability of data transmission.

Relays improve reliability of data transmission

Question 22

Which of the following frames are transmitted by a node when it is attempting to join a Basic Service Set using passive scanning? (You can select more than one)

Answer 22

Association Request Frame

Question 23

Which of the following frames use the Null Data Packet (NDP) MAC frame structure in 802.11ah? (You can select more than one)

Answer 23

PS-Poll Frame

RTS

CTS

(wrong, unable to get any answers for this one)