Deck 9: Wireless Transmission and Services

Question 1

The wireless spectrum is a continuum of electromagnetic waves, with varying frequencies and wavelengths, that are used for telecommunications.

Answer 1

True

Question 2

The FCC specifies the types of signals that can be issued over unlicensed frequencies, but anyone can use them without registering with or paying fees to the FCC.

Answer 2

True

Question 3

An omni-directional antenna issues wireless signals along a single direction.

Answer 3

False

Question 4

Antennas used for signaling over long distances are most often mounted on towers or on the tops or sides of tall buildings.

Question 5

Reflection occurs when a wireless signal splits into secondary waves the moment it encounters an obstruction.

Question 6

Scattering is the diffusion, or the reflection in multiple directions, of a signal.

Question 7

Fading is a change in signal strength as a result of some of the electromagnetic energy

Question 8

In broadband, a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.

Question 9

The transceiver and antenna used to issue signals from a wire-bound network device to mobile nodes is known as an access point.

Question 10

A directional antenna issues and receives wireless signals with equal strength and clarity in all directions.

Question 11

When engineers talk about wireless transmission, they refer to the atmosphere as a(n) unguided medium. _________________________

Question 12

An antenna's radiation pattern describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives. _________________________

Question 13

A(n) access point is the physical area through which an antenna's signal passes as it is transmitted or received. _________________________

Question 14

In reflection, a wireless signal splits into secondary waves when it encounters an obstruction. _________________________

Question 15

The use of multiple antennas or multiple signal transmissions to compensate for fading and delay is known as diversity. _________________________

Question 16

In fixed wireless systems, the locations of the transmitter and receiver are static. _________________________

Question 17

A(n) control channel is a communications channel that carries information about how another signal should be managed and interpreted. _________________________

Question 18

Dual mode refers to the use of multiple antennas or multiple signal transmissions to compensate for fading and delay in wireless transmission. _________________________

Question 19

In a(n) mobile wireless system the transmission antenna focuses its energy directly toward the receiving antenna. _________________________

Question 20

Fading refers to a type of cellular telephone that is capable of transmitting and receiving both and analog and digital signals. _________________________

Question 21

Which of the following is the transceiver and antenna used to exchange signals between a wire-bound network device and mobile network nodes on a WLAN?

A) Base station
B) Aperture
C) Access point
D) Base transceiver station

Question 22

Which of the following is the physical area through which an antenna's signal passes as it is transmitted or received?

A) Aperture
B) Forward path
C) Dual mode
D) Fading

Question 23

Which of the following is a first generation cellular technology that encodes and transmits speech as analog signals?

A) Bluetooth
B) Advanced mobile phone service
C) Global system for mobile communications
D) FDMA

Question 24

A tower, transceiver, and antenna that exchanges signals with all mobile station within one cell of a cellular network, is known as:

A) Base station
B) Access point
C) Aperture
D) Fading

Question 25

A mobile wireless networking standard that uses direct sequence spread spectrum signaling in the 2.4 GHz band to achieve maximum throughput of less than 1 Mbps, is known as:

A) Broadband wireless
B) Control channel
C) FDMA
D) Bluetooth

Question 26

A service that spans a relatively wide band of frequencies is called:

A) Diffraction
B) Broadband
C) Diversity
D) Dual mode

Question 27

A wireless service capable of very high data transfer rates is called:

A) Diffraction
B) Dual mode
C) Diversity
D) Broadband wireless

Question 28

Which of the following refers to a system for transmitting wireless voice signals to multiple, mobile receivers using two-way radio communication?

A) Cellular telephone service
B) CDMA
C) Broadband
D) FDMA

Question 29

Which of the following is a communications channel that carries information regarding the management and interpretation of another signal?

A) CDMA
B) Control channel
C) Broadband
D) Mobile station

Question 30

In wireless transmission, the splitting of a signal into secondary waves when it encounters an obstruction, is known as:

A) Aperture
B) Diversity
C) Diffraction
D) Broadband

Question 31

An antenna that issues wireless signals along a single direction is referred to as:

A) Direct sequence spectrum
B) Directional antenna
C) Forward path
D) Line of sight

Question 32

The use of multiple antennas or multiple signal transmissions to compensate for fading and delay in wireless transmission is referred to as:

A) Diversity
B) Diffraction
C) Aperture
D) Line of sight

Question 33

Which of the following is a type of cellular telephone that is capable of transmitting and receiving both analog and digital signals?

A) Forward path
B) Line of sight
C) Dual mode
D) Diversity

Question 34

A change in wireless signal strength as a result of some of the originally transmitted electromagnetic energy being scattered, reflected, or diffracted is referred as:

A) Dual mode
B) Fading
C) Aperture
D) Broadband

Question 35

Which of the following refers to the mobile wireless technology developed in the 1980s?

A) Aperture
B) First generation
C) Global system for mobile communications
D) Local multipoint distribution service

Question 36

Which of the following refers to the transmission from a mobile station to a base station?

A) Forward path
B) Fading
C) Dual mode
D) First generation

Question 37

Which of the following describes the process of a mobile wireless signal being transferred to a new channel?

A) Handoff
B) HomeRF
C) Line of Sight
D) Medium earth orbiting

Question 38

Which of the following refers to a wireless link that depends on an unobstructed, direct path between a transmitter and receiver?

A) Handoff
B) Multipath
C) Line of sight
D) Narrowband

Question 39

Which of the following is a type of wireless system in which the receiver may be located anywhere within a specific range of the transmitter?

A) Microwave multipoint system
B) Mobile
C) Narrowband
D) Reflection

Question 40

Which of the following refers to the wireless signals that follow a number of different paths to their destination due to reflection, diffraction, or scattering?

A) Multipath
B) Narrowband
C) Omni-directional antenna
D) Reverse path

Question 41

Which of the following is a type of radio frequency transmission in which signal energy is concentrated at a single frequency?

A) Reverse path
B) Broadband
C) Narrowband
D) Reflection

Question 42

A type of antenna that transmits and receives wireless signals with equal strength and clarity in all directions, is known as:

A) Personal area network
B) Radiation pattern
C) Omni-directional antenna
D) Directional antenna

Question 43

Which of the following is a mobile wireless network that connects multiple personal communications devices within a small geographical area?

A) Personal communication service
B) First generation
C) Intranet
D) Personal area network

Question 44

Which of the following is a representation of the relative strength, over a three-dimensional area, of all the electromagnetic energy the antenna sends or receives?

A) Reflection
B) Radiation pattern
C) Reverse path
D) Scattering

Question 45

Which of the following refers to the bouncing back of an electromagnetic wave towards its source?

A) Reverse path
B) Scattering
C) Reflection
D) Multipath

Question 46

The transmission from a base station to a mobile station is known as:

A) Reverse path
B) Radiation pattern
C) Scattering
D) Multipath

Question 47

The reflection in multiple different directions of a signal is known as:

A) Multipath
B) Scattering
C) Line of sight
D) Mobile

Question 48

Which of the following is a number assigned to the wireless carrier that the user has subscribed to?

A) TDMA
B) CDMA
C) SID
D) PAN

Question 49

Which of the following is a cellular network access technology that divides each channel into multiple time slots?

A) Wideband CDMA
B) Wireless local loop
C) TDMA
D) Wideband CDMA.

Question 50

Which of the following is a mobile wireless technology that proposes further advances in 2G technology?

A) Third generation
B) Wireless spectrum
C) Wireless LAN
D) Bluetooth

Question 51

Which of the following is a communications channel that provides no fixed path for signals?

A) Unlicensed
B) Wideband
C) Unguided medium
D) Wireless spectrum

Question 52

A frequency that may be used by any operator without applying or paying the FCC for its use, is referred to as:

A) Licensed
B) Handoff
C) HomeRF
D) Unlicensed

Question 53

Which of the following is a data network that uses wireless signaling for communication between nodes within a limited geographical area?

A) LAN
B) Wireless local loop
C) Wireless LAN
D) Wireless spectrum

Question 54

Which of the following is a generic term that describes a wireless link used in the PSTN to connect LEC central offices with subscribers?

A) Wireless local loop
B) Wireless LAN
C) Wideband CDMA
D) Wireless spectrum

Question 55

Which of the following is a continuum of electromagnetic waves used for telecommunications?

A) Wireless local loop
B) Third generation
C) Unguided medium
D) Wireless spectrum

Question 56

Does the term diversity refer to the splitting of a signal into secondary waves when it encounters an obstruction?

Question 57

Is it correct to say that a control channel carries information regarding how another signal should be managed and interpreted?

Question 58

Does the term broadband refer to a service that spans a relatively wide band of frequencies?

Question 59

Does the term reverse path refer to the reflection, in multiple directions, of a signal?

Question 60

Is the term forward path used to mean the transmission from a mobile station to a base station?

Question 61

Does the term diffraction refer to the use of multiple antennas to compensate for fading and delay?

Question 62

Does the term multipath refer to a type of radio frequency transmission in which signal energy is concentrated at a single frequency?

Question 63

Does the term radiation pattern refer to the bouncing back of an electromagnetic wave towards its source?

Question 64

Does the term scattering refer to the transmission from a base station to a mobile station?

Question 65

Does the term diversity refer to a type of cellular telephone that is capable of transmitting and receiving both analog and digital signals?

Question 66

The ____________________ is a continuum of electromagnetic waves, with varying frequencies and wavelengths, that are used for telecommunications.

Question 67

An antenna's _________________________ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.

Question 68

A(n) ____________________ is the physical area through which an antenna's signal passes as it is transmitted or received.

Question 69

In ____________________,a wireless signal splits into secondary waves when it encounters an obstruction.

Question 70

____________________ is the diffusion, or the reflection in multiple different directions, of a signal.

Question 71

____________________ is a change in signal strength as a result of some of the electromagnetic energy being scattered, reflected, or diffracted after being issued by the transmitter.

Question 72

In ____________________, a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.

Question 73

A(n) ____________________ is a data network (or part of a data network) that uses wireless signaling for communication between nodes within a limited geographical area.

Question 74

The transceiver and antenna used to issue signals from a wire-bound network device to mobile nodes is known as a(n) ____________________.

Question 75

A(n) ____________________ antenna issues and receives wireless signals with equal strength and clarity in all directions.

Question 76

Match each statement below with the correct item

-The physical area through which an antenna's signal passes as it is transmitted or received.

A)Diffraction
B)Handoff
C)Fading
D)Base station
E)Forward path
F)Aperture
G)Line of sight
H)Mobile station
I)Diversity
J)Broadband

Question 77

Match each statement below with the correct item

-A tower, transceiver, and antenna that exchanges signals with all mobile stations within one cell of a cellular network.

A)Diffraction
B)Handoff
C)Fading
D)Base station
E)Forward path
F)Aperture
G)Line of sight
H)Mobile station
I)Diversity
J)Broadband

Question 78

Match each statement below with the correct item

-A service that spans a relatively wide band of frequencies.

A)Diffraction
B)Handoff
C)Fading
D)Base station
E)Forward path
F)Aperture
G)Line of sight
H)Mobile station
I)Diversity
J)Broadband

Question 79

Match each statement below with the correct item

-The splitting of a signal into secondary waves when it encounters an obstruction.

A)Diffraction
B)Handoff
C)Fading
D)Base station
E)Forward path
F)Aperture
G)Line of sight
H)Mobile station
I)Diversity
J)Broadband

Question 80

Match each statement below with the correct item

-The use of multiple antennas or multiple signal transmissions to compensate for fading and delay in wireless transmission.

A)Diffraction
B)Handoff
C)Fading
D)Base station
E)Forward path
F)Aperture
G)Line of sight
H)Mobile station
I)Diversity
J)Broadband