Cwna Pw0-104 Set 1

Front 1

Will OFDM Clause 17 radios interfere with ERP clause 19 radios?

Back 1

OFDM clause 17 and ERP clause 19 radios transmit in different frequency ranges and will not interfere with each other. OFDM clause 17 radios transmit in the 5 GHz UNII bands, and ERP clause 19 radios transmit in the 2.4GHz ISM band.

Front 2

Will OFDM radios interfere with HR-DSSS radios?

Back 2

OFDM clause 17 and HR-DSSS clause 18 radios transmit in the 5 GHz UNII bands, and HR-DSSS clause 18 radios transmit in the 2.4 GHz ISM band.

Front 3

What is the measurement of resistance to an alternating current?

Back 3

Impedence

Front 4

IEEE 802.3-2005 clause 33 is commonly know as ?

Back 4

Power Over Ethernet (POE)

Front 5

All AES processing used within CCMP uses AES with a ____-b key.

Back 5

128

Front 6

What is the 802.3af amendment known as?

Back 6

IEEE 802.3-2005 clause 33

Front 7

What are the 2 types of POE devices defined by the standard?

Back 7

Powered Devices (PDs) Power-sourcing equipment (PSE)

Front 8

A PD complaint with 802.3-2005 clause 33 must reply to the PSE with what?

Back 8

Detection signature

Front 9

What information does the classification signature provide to 802.3-2005 clause 33 power-sourcing equipment?

Back 9

How much power the PD will need

Front 10

What are the 802.3-2005 clause 33 PoE classes?

Back 10

Class 0 through Class 4

Front 11

How much power does a PSE that is complaint with 802.3-2005 clause 33 provide to a PD?

Back 11

A nominal 48 Volts (33 to 57 volts)

Front 12

Why does the POE PSE provide power greater that what is needed by the PD?

Back 12

It needs to account for the worst case scenario, where there may be power loss due to cables and connectors between the devices

Front 13

What is the maximum draw any powered device complaint with 802.3-2005 clause 33?

Back 13

12.95 watts

Front 14

If a PD compliant with 802.3-2005 clause 33 does not provide a classification signature, what is the default class?

Back 14

Class 0

Front 15

What are the names of the two methods that an endpoint PSE complaint with 802.3-2005 clause 33 can use to provide power?

Back 15

Alternative A and Alternative B

Front 16

What cable pairs do PoE alternative A use to provide power over?

Back 16

The data pairs

Front 17

What cable pairs do PoE alternative B use to provide power over?

Back 17

The unused pairs

Front 18

What PoE alternative does midspan PSE use?

Back 18

Alternative B

Front 19

What is a midspan PSE commonly know as?

Back 19

Power Injector

Front 20

What flavors of Ethernet does 802.3-2005 clause 33-complaint midspan PSE equipment work with?

Back 20

10BaseT and 100BaseT

Front 21

What are the other 2 names for point-to-multipoint networks?

Back 21

Hub, and spoke, star

Front 22

What does the acronym WISP stand for?

Back 22

Wireless Internet Service Provider

Front 23

What does the acronym SOHO stand for?

Back 23

Small Office / Home Office

Front 24

What does the term hotspot typically refer to?

Back 24

A free or pay-for-use wireless network that is provided as a service by a business

Front 25

What does the acronym FMC stand for?

Back 25

Fixed mobile convergence

Front 26

What is the goal of fixed mobile convergence (FMC)?

Back 26

To provide a single mobile device, with a single telephone number, that is capable of switching between wireless networks (that is, cellular, WiMAX, 802.11, and so forth), always using the lowest-cost netwotks

Front 27

FMC devices are typically capable of communicating via what types of wireless technologies?

Back 27

Cellular telephones networks, VoWiFi networks

Front 28

Which 802.11 amaendment could possibly standarize FMC?

Back 28

802.11u

Front 29

Which 802.11 amendment is often reffered to as WirelessInterWorking with External Networks (WIEN)?

Back 29

802.11u

Front 30

What does the acronym MSDC stan for?

Back 30

MAC Service Data Unit

Front 31

What does MPDU stand for?

Back 31

MAC protocol Data Unit

Front 32

What does PSDU stand for?

Back 32

PLCP Service Data Unit

Front 33

What does PLCP stand for?

Back 33

Physical Layer Convergence Procedure

Front 34

What does PPDU stand for?

Back 34

PLCP Protocol Data Unit

Front 35

When the Network Layer sends data to the Data Link Layer, it is handed off to the LLC. What does the data become know as?

Back 35

MAC Service Data Unit (MSDU)

Front 36

When LLC sends the MSDU to the MAC sublayer, the MAC header is added to it. What does the data become known as?

Back 36

MAC Protocol Data Unit (MPDU)

Front 37

What is the upper layer of the Physical layer known as?

Back 37

Physical layer Convergence Procedure (PLCP)

Front 38

What is the lower layer of the Physical layer known as?

Back 38

Physical Medium Dependent (PMD)

Front 39

What prepares the fram for transmission by taking the frame from the MAC sublayer and creating the PPDU?

Back 39

Physical Layer Convergence Procedure (PLCP)

Front 40

What layer modulates and transmits the data as bits?

Back 40

Physical Medium Dependent (PMD)

Front 41

What is the PLCP service Data Unit (PSDU) also known as?

Back 41

MAC Protocol Data Unit (MPDU)

Front 42

What is the MPDU also known as?

Back 42

PLCP Service Data Unit (PSDU)

Front 43

Normally, if fragmentation is used within a BSS, MAC overhead will go ___ and networks throughput will go ___.

Back 43

Up, Down

Front 44

How many address fields are defined in an 802.11 frame?

Back 44

4

Front 45

What do management frames carry?

Back 45

Information fields and information elements

Front 46

In an oisey enviroment, if fragmentation is used within a BSS, MAC overhead will go ___, and network throughput could go ___.

Back 46

Up, Up

Front 47

What types of frames are used to join and leave 802.11 networks?

Back 47

Management frames

Front 48

Do all data frames carry a MSDU payload?

Back 48

No, some sata frames such as null function frame do not carry data.

Front 49

What is passive scanning?

Back 49

When a client listens for the beacon frames for the purpose of the BSS

Front 50

What is active scanning?

Back 50

When a client sends a probe request and listens for the probe response for the parameters of the BSS.

Front 51

Required data rates are also known as what?

Back 51

Basic rates

Front 52

What does WEP stand for?

Back 52

Wired Equivalent Privacy

Front 53

What are the required HR-DSSS data rates defined by the 802.22-2007 standard?

Back 53

11 Mbps, 5.5 Mbps, 2 Mbps, 1 Mbps

Front 54

What are the data rates for DSSS as defined by the 802.11-2007 standard?

Back 54

1 Mbps, 2 Mbps

Front 55

What are the data rates for FHSS as defined by the 802.11-2007 standard?

Back 55

1 Mbps, 2 Mbps

Front 56

What are the data rates for OFDM as defined by the 802.11-2007 standard?

Back 56

6 Mbps, 12 Mbps, 24 Mbps

Front 57

What are the REQUIRED data rates for OFDM as defined by the 802.11-2007 standard?

Back 57

6 Mbps, 12 Mbps, 24 Mbps

Front 58

What are the SUPPORTED OFDM data rates as defined by the 802.11-2005 standard?

Back 58

6, 9, 12, 18, 24, 36, 48, 54 Mbps

Front 59

What are the REQUIRED ERP-OFDM data rates as defined by the 802.11-2007 standard?

Back 59

6, 12, 14 Mbps

Front 60

What are the SUPPORTED ERP-OFDM data rates as defined by the 802.11-2007?

Back 60

6, 9, 12, 18, 24, 36, 48, 54 Mbps

Front 61

The original 802.11 standard specified what type of radio devices?

Back 61

Clause 14 FHSS devices and clause 15 DSSS devices

Front 62

The 802.11b amendment specified what type of radio devices?

Back 62

Clause 18 HR-DSSS devices

Front 63

The 802-11a amandment specified what type of radio devices?

Back 63

Clause 17 OFDM devices

Front 64

the 802.11g amendment specified what type of radio devices?

Back 64

Clause 19 devices, ERP devices

Front 65

What allows DSSS and OFDM technologies to coexist in the 2.4 GHz ISM?

Back 65

Protection Mechanism

Front 66

The original 802.11 standard defined what PHYs?

Back 66

FHSS, DSSS and infrared

Front 67

The 802.11b amendment MANDATED which PHY?

Back 67

HR-DSSS

Front 68

The 802.11a amendment MANDATED which PHY?

Back 68

OFDM

Front 69

HT clause 18 radios transmit in what frequency bands?

Back 69

5GHz UNII bands and the 2.4 GHz ISM bands

Front 70

Legacy FHSS clause 14 and legacy DSSS clause 15 radios transmit in what frequency band?

Back 70

2.4 GHz ISM band

Front 71

HR-DSSS clause 18 radios transmit in what frequency band?

Back 71

2.4 GHz ISM Band

Front 72

ERP clause 19 radios transmit in what frequency band?

Back 72

2.4 GHz ISM Band

Front 73

OFDM clause 17 radios transmit in what frequency bands?

Back 73

5 GHz UNII bands

Front 74

Are 802.11b radios backward compatible with 802.11 radios?

Back 74

802.11b HR-DSSS radios are backward compatible with 801.11 DSSS radios, but not 802.11 FHSS radios or 802.11 infrared devices.

Front 75

Give 2 reasons why 802.11a radios are not backward compatible with 802.11b radios.

Back 75

802.11 a and 802.11b radios operate in different frequency spaces and use different RF technologies. 802.11a radios transmit in the 5 GHz UNII bands. 802.11b radios tranmit in the 2.4 GHz band. 802.11a use OFDM technology, while 802.b radios use HR-dsss technology.

Front 76

Will 802.11a radios interfere with 802.11b/g radios?

Back 76

802.11a and 802.11b/g radios transmit in different frequency ranges and will not interfere with each other. 802.11a readios transmit in the 5 GHz UNii bands. 802.11b/g radios transmit in the 2.4 GHz band.

Front 77

What are the operational modes of an 802.11g (ERP) access point?

Back 77

B-only
G-only
B/G mixed mode

Front 78

The 802.11g amendment defined which PHYs as optional?

Back 78

ERP-PBCC and DSSS-OFDM

Front 79

What is the frequency space of the 2.4 Ghz ISM band?

Back 79

2.4 - 2.4835 GHz

Front 80

What is the frequency space of the 900 MHz ISM band?

Back 80

902 - 928 MHz

Front 81

What is the frequency space of the 5 GHz ISM Band

Back 81

5.725 - 5.875 GHz

Front 82

What is the frequency space of the UNII-1 band?

Back 82

5.15 - 5.25 GHz

Front 83

What is the frequency space of the UNII-2 Band?

Back 83

5.25 - 5.35 GHz

Front 84

What is the frequency space of the UNII-3 band?

Back 84

65.725 - 5.825 GHz

Front 85

What is the frequency space of the UNII-2E band?

Back 85

5.47 - 5.725 GHz

Front 86

The 802.11b amendment defined which PHY as optional?

Back 86

PBCC

Front 87

The 802.11h amendment defined what 2 mechanisms?

Back 87

Transmit Power Control (TPC)
Dynamic Frequency Selection (DFS)

Front 88

Dynamic Frequency Selection (DFS) is designed for what purpose?

Back 88

To avoid interfering with radar transmissions in the 5 GHz UNII bands.

Front 89

The 802.11i amendment mandated which type of encryption?

Back 89

Counter Mode with Cipher Block Chaining Message Authentication Code Protocol- (CCMP)

Front 90

What type of encryption is optional unfder the 802.11i amandment?

Back 90

Temporal Key Integrity Protocol - (TKIP)

Front 91

The 802.11e amendment defined what type of mechanisms at layer 2?

Back 91

Quality of Service (QOS)

Front 92

What is the main function that was defined by the 802.11e amendment?

Back 92

Hybrid Coordination Function (HCF)

Front 93

What is the QOS certification of the Wi-Fi Alliance?

Back 93

Wi-Fi Multimedia (WMM)

Front 94

Which 802.11 draft defines the use of MIMO antenna technology?

Back 94

802.11n

Front 95

Which 802.11 amendment is know as the fast secure roaming amendment?

Back 95

802.11r

Front 96

Which 802.11 draft defines the use of wirless mesh networking?

Back 96

802.11s

Front 97

Which 802.11 draft is known as the protected management frame amendment?

Back 97

802.11w

Front 98

Which organization creates standards for networking communications?

Back 98

Institute of Electrical and Electronics Engineers (IEEE)

Front 99

Which organization is responsible for interoperability testing of 802.11 equipment?

Back 99

Wi-Fi Alliance

Front 100

What properties of an RF signal can be used for modulation

Back 100

Amplitude, frequency, and phase

Front 101

RF travels at what speed?

Back 101

The speed of light

Front 102

The distance between the beginning and the end of a single cycle of an RF signal is known as what RF characteristics?

Back 102

Wavelength

Front 103

Which RF property defines the number of times a signal oscillates in 1 second?

Back 103

Frequecy

Front 104

What is the standard measurement of frequency?

Back 104

Hertz (Hz)

Front 105

What term describes the signal strength of an RF signal?

Back 105

Amplitude

Front 106

What term describes the loss of RF signal strength?

Back 106

Attenuation

Front 107

What term describes the relationship between two or more signals that share the same frequency?

Back 107

Phase

Front 108

What term best describes movement of radio waves away from a transmitting antenna?

Back 108

Propagation

Front 109

Which propagation behavior causes attenuation as the RF signal passes through a medium?

Back 109

Absorption

Front 110

Which propagation behavior is occurring when an RF signal bounces off a medium into another direction?

Back 110

Reflection

Front 111

Which propagation behavior is accurring when an RF signal bends in another direction as it passes through a physical medium?

Back 111

Refraction

Front 112

Which propagation behavior is occurring ewhen an RF signal bounces off a medium into multiple directions?

Back 112

Scattering

Front 113

When an RF signal encounters smog, which type of RF propagation behavior can occur?

Back 113

Scattering

Front 114

When an RF signal encounters a chain-link fence, which type of RF propagation behavior can occur?

Back 114

Scattering

Front 115

When an RF signal encounters a large body of water at a sharp angle, which type of RF propagation behavior can occur?

Back 115

Reflection

Front 116

When an RF signal encounters metal, which type of RF propagation behavior can occur?

Back 116

Reflection

Front 117

When an RF signal passes through changes in temperature, air pressure, or water vapor, which type of RF propagation behavior can occur?

Back 117

Refraction

Front 118

What term describes the loss of signal strenght caused by the natural broadening of RF waves over distance?

Back 118

Free Space Path Loss

Front 119

What term describes background noise in an RF enviornment?

Back 119

Noise Floor

Front 120

What is the propagation phenomenon that results in 2 or more paths of the same signal arriving at receiving antenna at the same time or within nonseconds of each other?

Back 120

Multipath

Front 121

Intersymbol interference is a result of ____.

Back 121

Multipath