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Wireless Fundamentals Flashcards

1
Q

802.11 (original) frequency/frequencies:

A

2.4 GHz

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2
Q

802.11 defines three types of service sets:

A

Independent
Infrastructure
Mesh

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3
Q

802.11 max data rate:

A

2 Mbps

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4
Q

802.11a frequency/frequencies:

A

5 GHz

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5
Q

802.11a max data rate:

A

54 Mbps

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6
Q

802.11ac frequency/frequencies:

A

5 GHz

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7
Q

802.11ac is aka Wi-Fi […]

A

5

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8
Q

802.11ac max data rate:

A

6.93 Gbps

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9
Q

802.11ax frequency/frequencies:

A

2.4 / 5 / 6 GHz

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10
Q

802.11ax is aka Wi-Fi […]

A

6

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11
Q

802.11ax max data rate:

A

4802.11ac (46.93 Gbps)

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12
Q

802.11b frequency/frequencies:

A

2.4 GHz

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13
Q

802.11b max data rate:

A

11 Mbps

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14
Q

802.11g frequency/frequencies:

A

2.4 GHz

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15
Q

802.11g max data rate:

A

54 Mbps

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16
Q

802.11n frequency/frequencies:

A

2.4 / 5 GHz

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17
Q

802.11n is aka Wi-Fi […]

A

4

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18
Q

802.11n max data rate:

A

600 Mbps

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19
Q

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

A

Scattering

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20
Q

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

A

Reflection

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21
Q

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

A

Diffraction

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22
Q

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

A

Refraction

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23
Q

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

A

Absorption

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24
Q

[…] is aka Wi-Fi 4.

A

802.11n

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25
Q

[…] is aka Wi-Fi 5.

A

802.11ac

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26
Q

[…] is aka Wi-Fi 6.

A

802.11ax

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27
Q

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

A

Amplitude

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28
Q

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

29
Q

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

A

workgroup bridge (WGB)

30
Q

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

31
Q

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

A

outdoor bridge

32
Q

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

33
Q

Does an SSID have to be unique?

34
Q

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

A

DS (Distribution System)

35
Q

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

A

No, they must communicate via the AP

36
Q

In an MBSS, what does MAP stand for?

A

Mesh Access Point

37
Q

In an MBSS, what does RAP stand for?

A

Root Access Point

38
Q

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

A

RAP (Root Access Point)

39
Q

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

40
Q

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

41
Q

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

A

Wi-Fi Alliance

42
Q

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

A

BSA (Basic Service Area)

43
Q

The most common measurement of frequency is […].

44
Q

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

45
Q

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

46
Q

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

47
Q

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

48
Q

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

A

1, 6, and 11

49
Q

What does AP stand for?

A

Access Point

50
Q

What does BSA stand for?

A

Basic Service Area

51
Q

What does BSS stand for?

A

Basic Service Set

52
Q

What does BSSID stand for?

A

Basic Service Set Identifier

53
Q

What does CSMA/CA stand for?

A

Carrier Sense Multiple Access with Collision Avoidance

54
Q

What does ESS stand for?

A

Extended Service Set

55
Q

What does GHz stand for?

56
Q

What does Hz stand for?

57
Q

What does IBSS stand for?

A

Independent Basic Service Set

58
Q

What does kHz stand for?

59
Q

What does MBSS stand for?

A

Mesh Basic Service Set

60
Q

What does MHz stand for?

61
Q

What does SSID stand for?

A

Service Set Identifier

62
Q

What does THz stand for?

63
Q

What does WGB stand for?

A

Workgroup bridge

64
Q

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

65
Q

Which two main bands are used for wireless LAN communications?

A

2.4 GHz
5 GHz

66
Q

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

67
Q

Wireless LANs are defined in IEEE […].

68
Q

Wireless networks operate in […]-duplex.

69
Q

Wireless networks use […] to avoid collisions.

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