Wireless Fundamentals

Question 1

802.11 (original) frequency/frequencies:

Answer 1

2.4 GHz

Question 2

802.11 defines three types of service sets:

Answer 2

Independent
Infrastructure
Mesh

Question 3

802.11 max data rate:

Answer 3

2 Mbps

Question 4

802.11a frequency/frequencies:

Answer 4

5 GHz

Question 5

802.11a max data rate:

Answer 5

54 Mbps

Question 6

802.11ac frequency/frequencies:

Answer 6

5 GHz

Question 7

802.11ac is aka Wi-Fi […]

Answer 7

5

Question 8

802.11ac max data rate:

Answer 8

6.93 Gbps

Question 9

802.11ax frequency/frequencies:

Answer 9

2.4 / 5 / 6 GHz

Question 10

802.11ax is aka Wi-Fi […]

Answer 10

6

Question 11

802.11ax max data rate:

Answer 11

4802.11ac (46.93 Gbps)

Question 12

802.11b frequency/frequencies:

Answer 12

2.4 GHz

Question 13

802.11b max data rate:

Answer 13

11 Mbps

Question 14

802.11g frequency/frequencies:

Answer 14

2.4 GHz

Question 15

802.11g max data rate:

Answer 15

54 Mbps

Question 16

802.11n frequency/frequencies:

Answer 16

2.4 / 5 GHz

Question 17

802.11n is aka Wi-Fi […]

Answer 17

4

Question 18

802.11n max data rate:

Answer 18

600 Mbps

Question 19

[…] happens when a material causes a signal to scatter in all directions.

Answer 19

Scattering

Question 20

[…] happens when a signal bounces off of a material, for example metal.

Answer 20

Reflection

Question 21

[…] happens when a wave encounters an obstacle and travels around it.

Answer 21

Diffraction

Question 22

[…] happens when a wave is bent when entering a medium where the signal travels at a different speed.

Answer 22

Refraction

Question 23

[…] happens when a wireless signal passes through a material and is converted into heat, weakening the original signal.

Answer 23

Absorption

Question 24

[…] is aka Wi-Fi 4.

Answer 24

802.11n

Question 25

[...] is aka Wi-Fi 5.

Answer 25

802.11ac

Question 26

[...] is aka Wi-Fi 6.

Answer 26

802.11ax

Question 27

[...] is the maximum strength of the electric and magnetic fields of a wave.

Answer 27

Amplitude

Question 28

[...] measures the number of up/down cycles per a given unit of time.

Answer 28

Frequency

Question 29

A [...] operates as a wireless client of another AP, and can be used to connect wired devices to the wireless network.

Answer 29

workgroup bridge (WGB)

Question 30

An AP in [...] mode can be used to extend the range of a BSS.

Answer 30

repeater

Question 31

An AP operating as an [...] can be used to connect networks over long distances without a physical cable connecting them.

Answer 31

outdoor bridge

Question 32

An IBSS is also called an [...] wireless network.

Answer 32

ad hoc

Question 33

Does an SSID have to be unique?

Answer 33

No

Question 34

In 802.11, the upstream wired network is called the [...].

Answer 34

DS (Distribution System)

Question 35

In a BSS, can clients communicate directly with each other?

Answer 35

No, they must communicate via the AP

Question 36

In an MBSS, what does MAP stand for?

Answer 36

Mesh Access Point

Question 37

In an MBSS, what does RAP stand for?

Answer 37

Root Access Point

Question 38

In an MBSS, which AP is connected to the wired network?

Answer 38

RAP (Root Access Point)

Question 39

The [...] is a human-readable name which identifies the service set.

Answer 39

SSID

Question 40

The [...] is the MAC address of the AP's radio.

Answer 40

BSSID

Question 41

The [...] tests and certifies equipment for 802.11 standards compliance interoperability with other devices.

Answer 41

Wi-Fi Alliance

Question 42

The area around an AP where its signal is usable is called a [...].

Answer 42

BSA (Basic Service Area)

Question 43

The most common measurement of frequency is [...].

Answer 43

hertz

Question 44

The term [...] refers to the amount of time for one cycle of a wave.

Answer 44

Period

Question 45

The Wi-Fi [...] band consists of non-overlapping channels.

Answer 45

5 GHz

Question 46

The Wi-Fi [...] band consists of overlapping channels.

Answer 46

2.4 GHz

Question 47

The Wi-Fi [...] band typically provides further reach.

Answer 47

2.4 GHz

Question 48

To avoid overlapping frequencies, it is recommended to use channels [...], [...], and [...] of the 2.4 GHz band.

Answer 48

1, 6, and 11

Question 49

What does AP stand for?

Answer 49

Access Point

Question 50

What does BSA stand for?

Answer 50

Basic Service Area

Question 51

What does BSS stand for?

Answer 51

Basic Service Set

Question 52

What does BSSID stand for?

Answer 52

Basic Service Set Identifier

Question 53

What does CSMA/CA stand for?

Answer 53

Carrier Sense Multiple Access with Collision Avoidance

Question 54

What does ESS stand for?

Answer 54

Extended Service Set

Question 55

What does GHz stand for?

Answer 55

Gigahertz

Question 56

What does Hz stand for?

Answer 56

Hertz

Question 57

What does IBSS stand for?

Answer 57

Independent Basic Service Set

Question 58

What does kHz stand for?

Answer 58

Kilohertz

Question 59

What does MBSS stand for?

Answer 59

Mesh Basic Service Set

Question 60

What does MHz stand for?

Answer 60

Megahertz

Question 61

What does SSID stand for?

Answer 61

Service Set Identifier

Question 62

What does THz stand for?

Answer 62

Terahertz

Question 63

What does WGB stand for?

Answer 63

Workgroup bridge

Question 64

When a client passes between APs in an ESS, it is called [...].

Answer 64

roaming

Question 65

Which two main bands are used for wireless LAN communications?

Answer 65

2.4 GHz 5 GHz

Question 66

Wireless devices that have associated with a BSS are called clients or [...].

Answer 66

stations

Question 67

Wireless LANs are defined in IEEE [...].

Answer 67

802.11

Question 68

Wireless networks operate in [...]-duplex.

Answer 68

half

Question 69

Wireless networks use [...] to avoid collisions.

Answer 69

CSMA/CA