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Networking > Chapter 12 > Flashcards

Chapter 12 Flashcards

1
Q

What is the purpose of the INstitute of Electrical and Electronics Engineeers (IEEE)?

A

creates and maintains operational standards. p. 381

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2
Q

What is the purpose of the Federal Communications Commission (FCC)?

A

Regulates the use of wireless devices in the US

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3
Q

What is the purpose of the European Telecommunications Standards Institute (ETSi)

A

Charted to produce common standards in Europe. p. 381

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4
Q

What is the purpose of the Wi-Fi Alliance?

A

Promotes and tests for WLAN interoperability. p. 381

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5
Q

What is the purpose of the WLAN Association (WLANA)?

A

Educates and raises consumer awareness regarding WLANS. p. 381

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6
Q

What is the newest 802.11 standard?

A

802.11ac p. 382

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7
Q

Which 802.11 standards run at 2.4 GHz?

A

802.11, 802.11b, 802.11g p. 385 (802.11n runs at both 2.4 and 5 GHz)

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8
Q

Which 802.11 standards run at 5GHz?

A

802.11a, 802.11h, 802.11ac (802.11n runs at both 2.4 and 5 GHz)

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9
Q

What is it called when a WAP has more than one antenna?

A

Diversity p. 391

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10
Q

True or false: you need a NIC to use wireless.

A

True p. 392

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11
Q

What are the two classes of antennas for WAPs used today?

A

Omni directional and directional or Yagi (point to point). p. 393

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12
Q

Define isotropic.

A

Exhibiting properties with the same values when measured along axes in any direction. p. 394

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13
Q

what is the indoor range of antenna type ANT 2410Y-R at 1Mbps?

A

800ft. p. 394

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14
Q

what is the indoor range of antenna type ANT 1728 at 1Mbps?

A

497ft p. 394

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15
Q

what is the indoor range of antenna type ANT 4941 at 1Mbps?

A

350ft p. 394

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16
Q

what is the outdoor range of antenna type ANT 2506 at 2Mbps?

A

5000ft p. 394

17
Q

what is the outdoor range of antenna type ANT 24120 at 2Mbps?

A

24,288ft p. 394

18
Q

What is independent basic service set (IBSS)?

A

When two laptops have NICs that were set up to operate in ad hoc mode (able to communicate with eachother). p. 395

19
Q

True or false: infrastructure mode, Basic Service Set and Basic service area all mean the same thing.

A

True p. 396

20
Q

Describe how PC’s communicate with eachother in infrastructure mode?

A

They communicate with APs instead of directly with eachother. p. 396

21
Q

What is the SSID?

A

a 32 charachter identifieer that represents a particular wireless network. p. 396

22
Q

True or false in the controller based system APs do not have full operating systems.

A

True

23
Q

What are key factors that effect signal strength?

A

Distance
Walls/other barriers
Protocols used
Interference p. 401

24
Q

True or false: bluetooth is named after a Viking that lived over 1000 years ago.

A

True

Networking (11 decks)

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