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Module I: Wireless > Mod 2: 802 Standards and Amendments - PE > Flashcards

Mod 2: 802 Standards and Amendments - PE Flashcards

1
Q

[True / False]

Wifi and Ethernet abide by the IEEE standards 802.11 and 802.3 respectively.

A

TRUE

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2
Q

[True / False]

The International Telecommunications institute (ITU) is responsible for the coordination of global use of the Radio Frequency (RF) spectrum, each country must follow the rules of the ITU and cannot deviate.

A

False

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3
Q

In the United States, the governing organization that regulates the use of the RF spectrum and broadband services is:

  • DIA
  • FCC
  • Congress
  • DNI
A

FCC

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4
Q

[True / False]

The first 802.11 standard was developed in June of 2006.

A

False

(1997)

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5
Q

What band(s) does 802.11x operate on?

  • 2.4GHz
  • 5 GHz
  • 802GHz & 11 GHz
  • 2.4GHz & 5GHz
A

2.4GHz & 5GHz

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6
Q

What layer(s) of the OSI model does 802.11 WiFi operate in?

  • Layer 3 – Network Layer
  • Layer 2 – Data Link Layer
  • Both Layer 1 & Layer 2
  • Both Layer 2 & Layer 3
A

Both Layer 1 & Layer 2

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7
Q

The most recent amendment to the 802.11 standard has a maximum data rate of:

  • Over 1 Gbps
  • Up to a maximum of 54 Mbps
  • Roughly 500 Mbps
  • Over 9000
A

Over 1 Gbps

(1.3)

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8
Q

_________ allows one single radio wave to represent __ bits of data by manipulating the amplitude and phase of the radio waves into 64 different discrete measurable states.

  • OFDM, 64
  • PSK, 64
  • FM, 64
  • QAM, 64
A

QAM, 64

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9
Q

[True / False]

A disadvantage of OFDM is that data becomes more susceptible to noise and interference since the receiver must accurately detect more discrete phases and amplitudes of a signal.

A

False

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10
Q

The first 802.11 wireless standard, often referred to as 802.11 Prime, was initially published as:

  • 802.11 First
  • 802.11 - 1997
  • 802.11 Standard
  • 802.11 - WLAN
A

1997

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11
Q

What modulation type is used in technologies such as 802.11ac, 4G & 5G cellular technologies, WiMAX and satellite?

  • PSK
  • OFDM
  • QAM
  • FM
A

OFDM

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12
Q

_______________ is the process of combining one or more cellular modems connections into a single faster virtual connection allowing the end use to utilize combined bandwidth.

A

channel bonding

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13
Q

Multiple Input/ Multiple output (MIMO) utilizes what natural radio-wave phenomenon to bounce off walls, ceilings, and other objects to ultimately reach it’s desired destination?

A

multi-path

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14
Q

__________ refers to an over-the-air interface between a wireless client and a base station or between two wireless clients.

  • 802.11 WLAN
  • 802.11 WiFi
  • WAN
  • Hotspot
A

802.11 WLAN

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15
Q

________ enables a client to communicate with another client without the need for an access point.

A

Ad hoc

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16
Q

At what layer does meshing on a wireless network occur?

17
Q

Channel bonding is best optimized on which frequency band?

18
Q

This multi-functional device includes an access point and routes packets from a wireless LAN to another network, wired or wireless WAN.

A

wireless gateway

19
Q

What are the two types of Wireless Gateways?

  • Long and Short
  • Distributive and Collective
  • Residential and Enterprise
  • Bridge and Root
A

Residential and Enterprise

20
Q

A Wireless Distribution System (WDS):

  • Is used to link a Residential and Enterprise gateway
  • Uses 802.11 connection to allow wireless inter-connection of access points
  • Provides wireless connectivity between multiple wired networks
  • Refers to a link between a client and an access point
A

Uses 802.11 connection to allow wireless inter-connection of access points.

21
Q

Independent Basic Service Set (IBSS) is also known as ad-hoc mode or peer-to-peer mode, in which:

  • There is no single node required and contains wireless stations that communicate directly with each other without the need for an access point
  • Provides wireless connectivity between multiple wired networks
  • Helps to enable a station associate with an access point
  • The process of combining one or more cellular modems connections into a single faster virtual connection
A

There is no single node required and contains wireless stations that communicate directly with each other without the need for an access point.

22
Q

Basic Service Set (BSS) contains at least _______ access point connected to a wired network infrastructure and a set of wireless end stations.

  • One
  • Two
  • Three
  • Four
23
Q

ESS stands for:

  • Extra Special Services
  • Extended Service Set
  • Endpoint Service Station
  • Enterprise Special Solutions
A

Extended Service Set

24
Q

[True / False]

Captive portals contain anti-virus and firewall programs to protect users.

25
Q

A captive portal can be configured with ______________ to impose limits on how much information can be downloaded at one time per user.

A

bandwidth throttling

Module I: Wireless (8 decks)

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