Ecpi - Eet 282 - Wireless Security - Test 1

Front 1

Hot Spot

Back 1

Wireless network that provides Internet connection and virtual private network from a given location

Front 2

Bluetooth

Back 2

Telecommunication industry specification that describes how mobile phones, computers, and personal digital assistants (PDAs) can be networked easily using a short-range (about 30 feet) connection.

Front 3

War Driving

Back 3

The act of locating and possibly exploiting connections to wireless networks while driving around

Front 4

Antenna

Back 4

Converts-radio frequency fields (RF) into alternating current (AC) or vice versa

Front 5

WLAN

Back 5

Wireless Local Area Network

Local area network in which a user can connect through a radio connection

Front 6

Piconet

Back 6

Formed when at least two devices, such as a portable PC and a cellular phone, connect using Bluetooth technology

NOTE: Bluetooth network containing a master and at least one slave

Front 7

FSO

Back 7

Free Space Optics

Refers to the transmission of modulated visible or infrared (IR) beams through the atmosphere to obtain broadband connection

NOTE: Alternative to high-speed fiber optic transmissions

Front 8

WAP

Back 8

Wireless Application Protocol

Specifications for a set of protocols that standardize the way wireless devices, such as cellular telephones and radio transceivers, are used for internet access.

Front 9

RFID

Back 9

Radio Frequency Identification

Incorporates the use of radio frequency to uniquely identify an object, animal, or person
- Essentially acts like an “electronic barcode”
- Used to uniquely identify items
- Can be read by RFID reader if anywhere within range of transmitted radio signal

Front 10

WWAN

Back 10

Wireless Wide area network

A wireless computer data network that may may extend over a large geographical area.

Front 11

WML

Back 11

Wireless Markup Language

A Language that allows the text portions of Web pages to be displayed on cell phones and PDAs wirelessly.

Front 12

WiMax

Back 12

Software built into a wireless device that allows users to access and display specially formatted internet content using a handset device.

Front 13

WPAN

Back 13

Wireless Personal Area Network

A station that transmits and receives data and connects wireless users to the wired network.

Front 14

Microbrowser

Back 14

Software built into a wireless device that allows users to access and display specially formatted internet content using a handset device.

Front 15

Access Point

Back 15

A station that transmits and receives data and connects wireless users to the wired network.

Front 16

WiFi

Back 16

Term for certain types of wireless LANs that use specifications in the 802.11 family

Front 17

Wireless Adapter

Back 17

A card that is inserted into a device to connect it to a wireless network.

Front 18

GSM

Back 18

Global Systems Mobile

A WWAN technology used by cell phones and other handheld devices.

Front 19

Fixed broadband wireless:

Back 19

Wireless transmissions between immobile devices
Typically employed between office buildings
Also utilizes small, customized antennas

Front 20

Wireless Fidelity

Back 20

AKA WiFi

Front 21

How do Bluetooth devices communicate?

Back 21

radio modules

Front 22

What is a Bluetooth link manager?

Back 22

Software that helps identify other Bluetooth devices, creates links between devices, and then sends & receives data between devices

Front 23

What is the transmission of Bluetooth?

Back 23

Transmit data at up to 1 Mbps over 10 meters (32.8 ft)

Front 24

ISDN

Back 24

Integrated Services Digital Networks (ISDN):

Transmits at 256 Kbps

Front 25

What speed do T-1 lines transmit at?

Back 25

1.544 Mbps

Front 26

What speed is WiMax

Back 26

Up to 75 Mbps and with a range of up to 35 miles

Front 27

What is the speed for GSM?

Back 27

Global Systems for Mobile

9.6 kbps

Front 28

WMS

Back 28

Warehouse Management System

- Can manage all activities from receiving through shipping

- Utilize wireless technology

Front 29

Watt (W)

Back 29

- Basic unit of power

- Defined as one ampere (A) of current at one volt (V)

Front 30

What is the maximum number of watts the FCC allows radiated power for point-to-multipoint wireless LAN in unlicensed 2.4 GHz band

Back 30

FCC allows 4 watts (max.) of radiated power for point-to-multipoint wireless LAN in unlicensed 2.4 GHz band

Front 31

Milliwatt (mW)

Back 31

1 milliwatt equals 1/1000 of a watt

NOTE: Most 802.11 devices use power levels between 1 & 100 milliwatts (mW)

Front 32

In the wireless industry; what are the standard measurements?

Back 32

The mW & dBm are both industry standard measurement units

Front 33

How do radio frequency (RF) signals drop?

Back 33

Logarithmically as it propagates

Front 34

How do we measure power loss?

Back 34

The decibel is designed specifically to measure power loss.

Front 35

What are the two main differences between a decibel and a milliwatt regaurding there strength?

Back 35

- Decibel always measures relative strength between two signals,

- Milliwatt measures absolute strength of one signal

Front 36

What kind of measurement is a Miliwatt?

Back 36

Linear

Front 37

What kind of measurement is a Decibel?

Back 37

logarithmic

Front 38

What is a logarithm?

Back 38

A logarithm is an exponent to which number 10 must be raise to reach a given value.

Front 39

What is General formula for calculating decibel difference between two signals?

Back 39

Power Difference (dB) = 10 x log (Power A / Power B)

Front 40

RF Math

-3 dB

Back 40

Half the power in mW

IN OTHER WORDS: divide the power by 2

Front 41

RF Math

+ 3 dB

Back 41

Double the power in mW

IN OTHER WORDS: multiply the power by 2

Front 42

RF Math

- 10 dB

Back 42

one-tenth the power in mW

IN OTHER WORDS: divide the power by 10

Front 43

RF Math

+10 dB

Back 43

Ten times the power in mW

IN OTHER WORDS: multiply the power by 10

Front 44

What is the formula for converting mW to dBm?

Back 44

Power Difference (dB) = 10 x log (PowerA / Power B)

Front 45

What is the formula for converting dBm to mW?

Back 45

Pmw=log^-1(P(dbm) /10)

Front 46

What is an ideal antenna referred to?

Back 46

isotropic radiator

Front 47

How does an isotropic radiator transmit?

Back 47

equally in all directions at 100 percent efficiency

NOTE: The sun is an isotropic radiator. Man made antenna's are not

Front 48

Is an antenna passive or active?

Back 48

Passive

it simply converts AC electrical energy into RF energy

Front 49

What is normalizing the decibel?

Back 49

This is the method used to measure absolute power levels with decibel's.

NOTE: To normalize decibel means to measure power level of signal relative to some arbitrary reference power

Front 50

What happens as an antenna's gain goes up?

Back 50

The coverage area narrows, so high-gain antenna offer more focused coverage

Front 51

What is the Preferred direction of an antenna?

Back 51

This is the direction in which the antenna was designed to focus its energy.

Front 52

An antenna that emits twice as much energy in its preferred direction would have an antenna gain of ____________

Back 52

3 dBi

Front 53

An antenna that emits 10 times as much energy in its preferred direction would have an antenna gain of ____________

Back 53

10 dBi

Front 54

An antenna's gain is ______________ and never ______

Back 54

An antenna gain is always positive

Never Negative

NOTE: it is always expressed in positive terms

Front 55

Units of dBi are __________.

Back 55

Units of dBi are relative

Front 56

What is the standard measurement for an antenna?

Back 56

The standard antenna used for dBd measurement is a half-wave dipole with a gain of 2.14 dBi

Front 57

What frequencies do dBd usually measure?

Back 57

UHF and VHF

Front 58

What is the main difference between html and wml?

Back 58

A main difference between HTML and WML is that the basic unit of navigation in HTML is a page, while that in WML is a card. A WML file can contain multiple cards and they form a deck.

Front 59

What are the difference between Wi-Fi and WiMax?

Back 59

The difference between Wimax and Wi-Fi is; Wimax is a criterion based wireless technology which is used to provide internet access and multimedia services at very high speed to the end user while Wi-Fi technology uses local area network (LAN) for internet access. They are both wireless technologies but designed for completely different applications. Wimax covers a greater distance than Wi-Fi thus can cover a metropolitan area network.

Front 60

What speed does ISDN transmit at?

Back 60

Integrated Services Digital Networks (ISDN):

Transmits at 256 Kbps

Front 61

What does EIRP stand for?

Back 61

Equivalent Isotropically Ratiated

Front 62

What are the 5 RF Properties?

Back 62

1. Amplitude
2. Wave Length
3. Phase
4. Polarization
5. Frequency

Front 63

What are the 7 RF Behaviors?

Back 63

1. Gain
2. Loss
3. Reflection
4. Refraction
5. Diffraction
6. Scattering
7. Absorption

Front 64

What types of amplitude can you have?

Back 64

Gain

Loss

Front 65

What is gain?

Back 65

(out over in)

increase in the RD signal amplitude

NOTE: Can be active or passive

Front 66

What is loss?

Back 66

(negative gain)

a decrease in signal amplitude

Front 67

What is reflection?

Back 67

This occurs when the RF signal strikes an object with very large dimensions compared to wavelength of RF wave.

Front 68

What is refraction?

Back 68

This describes the bending of radio waves as it passes through a medium of different density.

Front 69

What is scattering?

Back 69

This occurs when a wave travels through medium consisting of objects with small dimensions compared to wave length of signal.

Front 70

What is absorption?

Back 70

This occurs when the RF signal material such tat it does not pass through, reflect of, or bend around the object.

Front 71

What is VSWR stand for?

Back 71

Voltage Standing Wave Ratio Occurs

Front 72

What does VSWR stand for?

Back 72

Voltage Standing Wave Ratio occurs when there is mismatched impedance between devices in an RF system.

Front 73

Intentional Radiator

Back 73

Is a RF device specifically designed to generated and radiate RF signals

Front 74

What is a period?

Back 74

The time it takes for a repetitive signal