Question 1

In ____, a wireless signal splits into secondary waves when it encounters an obstruction.&#10;A) reflection&#10;B) scattering&#10;C) diffraction&#10;D) bounce back

Accepted Answer

Diffraction occurs when a wave encounters an obstruction or aperture and splits into secondary waves, spreading out in different directions. This is the reason why a wireless signal can partially pass through walls or other obstacles, as it diffracts around the obstruction instead of being completely blocked. Reflection involves the wave bouncing off a surface, scattering involves the wave being dispersed in different directions, and bounce back is not a term commonly used in wave propagation.

Question 2

In the case of connecting two WLANs, access points could be as far as ____ feet apart.&#10;A) 500&#10;B) 800&#10;C) 1000&#10;D) 1200

Accepted Answer

Access points can typically transmit a signal up to 1000 feet (about 305 meters) in an open environment without obstacles or interference. In practice, the range may be shorter due to interference from walls, other wireless devices, and environmental factors. Therefore, choice C is the best option provided as it represents a common and reasonable range for connecting two WLANs.

Question 3

____ is a significant problem for wireless communications because the atmosphere is saturated with electromagnetic waves.&#10;A) Attenuation&#10;B) Fading&#10;C) Diffraction&#10;D) Interference

Accepted Answer

Interference occurs when electromagnetic waves from multiple sources overlap and disrupt each other, causing signal distortion and noise. This can be a significant problem for wireless communications, especially in areas with high levels of electromagnetic activity. Attenuation refers to the loss of signal strength over distance, fading is a type of signal distortion caused by changes in the propagation environment, and diffraction refers to the bending of waves around obstacles. While these factors can also impact wireless communications, interference is often the most significant challenge.

Question 4

Wireless signals experience attenuation.

Accepted Answer

Wireless signals experience attenuation as they travel through space due to obstacles, interference, and distance. This results in a decrease in signal strength and quality.

Question 5

In wireless communication, to exchange information, two antennas must be tuned to the same ____.&#10;A) frequency&#10;B) variance&#10;C) attenuation speed&#10;D) port

Accepted Answer

In wireless communication, the antennas must be tuned to the same frequency to exchange information. This is because the frequency determines the wavelength of the signal, and if the antennas are not tuned to the same frequency, they will not be able to effectively communicate with one another. Variance, attenuation speed, and port are not relevant factors when it comes to tuning antennas for wireless communication.

Question 6

In ____ scanning, the station transmits a special frame, known as a probe, on all available channels within its frequency range.&#10;A) active&#10;B) passive&#10;C) fixed&#10;D) open

Accepted Answer

Active scanning is a method in which a station sends out a probe request on all available channels within its frequency range to find and locate access points (APs) or other stations in order to establish a connection.

Question 7

____ is an 802.11n network feature allowing the combination of multiple frames into one larger frame.&#10;A) Channel bonding&#10;B) Channel aggregation&#10;C) Frame aggregation&#10;D) Frame bonding

Accepted Answer

Frame aggregation is an 802.11n network feature that allows multiple frames to be combined into one larger frame. This helps to reduce overhead and improve data transmission efficiency. Channel bonding (A) refers to the use of multiple channels to increase bandwidth, while channel aggregation (B) is not a recognized term in the field of networking. Frame bonding (D) is also not a recognized term in the field of networking.

Question 8

A unique characteristic of the 802.11 data frame is its ____ field.&#10;A) Frame Control&#10;B) Sequence Control&#10;C) Data&#10;D) Duration

Accepted Answer

The Sequence Control field is unique to the 802.11 data frame and is used to identify the sequence number of a particular data frame. This field helps in detecting lost or corrupted data frames by ensuring that each frame is received in the correct order. The Frame Control field is also unique to the 802.11 data frame and provides information about the frame type, subtype, and other control information. The Data field contains the actual data being transmitted, while the Duration field is used to indicate how long a station intends to use the wireless medium.

Question 9

An 802.11g antenna has a geographic range of ____ meters.&#10;A) 20&#10;B) 100&#10;C) 300&#10;D) 330

Accepted Answer

The 802.11g standard typically has a range of up to 100 meters indoors.

Question 10

Spread spectrum is a popular way of making wireless transmissions more secure.

Accepted Answer

Spread spectrum is a technique that spreads the signal over a wider frequency band, making it more difficult to intercept or jam. This makes wireless transmissions more resistant to interference, eavesdropping or interception, and therefore more secure.

Question 11

____ is a command-line function for viewing and setting wireless interface parameters and it is common to nearly all versions of Linux and UNIX.&#10;A) ipconfig&#10;B) iwconfig&#10;C) config&#10;D) ivconfig

Accepted Answer

The answer of ____ is a command-line function for viewing...

Question 12

____ is the least popular WLAN standard.&#10;A) 802.11a&#10;B) 802.11b&#10;C) 802.11g&#10;D) 802.11n

Accepted Answer

The answer of ____ is the least popular WLAN standard.&#10;A)...

Question 13

WiMAX is defined by the IEEE 802.11 standard.

Accepted Answer

The answer of WiMAX is defined by the IEEE 802.11...

Question 14

____ is an 802.11n feature that allows two adjacent 20-MHz channels to be combined to make a 40-MHz channel.&#10;A) Channel bonding&#10;B) Channel aggregation&#10;C) Frame aggregation&#10;D) Frame bonding

Accepted Answer

The answer of ____ is an 802.11n feature that allows...

Question 15

An ad hoc arrangement would work well for a WLAN with many users.

Accepted Answer

The answer of An ad hoc arrangement would work well...

Question 16

A directional antenna issues wireless signals along a(n) ____ direction.&#10;A) open&#10;B) narrow&#10;C) wide&#10;D) single

Accepted Answer

The answer of A directional antenna issues wireless signals along...

Question 17

The average geographic range for an 802.11a antenna is ____ meters.&#10;A) 20&#10;B) 100&#10;C) 330&#10;D) 600

Accepted Answer

The answer of The average geographic range for an 802.11a...

Question 18

In ____ wireless systems, the transmitting antenna focuses its energy directly toward the receiving antenna which results in a point-to-point link.&#10;A) mobile&#10;B) variable&#10;C) fixed&#10;D) open

Accepted Answer

The answer of In ____ wireless systems, the transmitting antenna...

Question 19

____ may use either the 2.4-GHz or 5-GHz frequency range.&#10;A) 802.11a&#10;B) 802.11b&#10;C) 802.11g&#10;D) 802.11n

Accepted Answer

The answer of ____ may use either the 2.4-GHz or...

Question 20

Wireless networks are laid out using the same topologies as wired networks.

Accepted Answer

The answer of Wireless networks are laid out using the...

Question 21

The ____________________ is a unique character string used to identify an access point.

Accepted Answer

The answer of The ____________________ is a unique character string...

Question 22

____________________ means that satellites orbit the Earth at the same rate as the Earth turns.

Accepted Answer

The answer of ____________________ means that satellites orbit the Earth...

Question 23

Which satellites transmit and receive signals in the 12 to 18 GHz band?&#10;A) L-&#10;B) S-&#10;C) Ku-&#10;D) Ka-

Accepted Answer

The answer of Which satellites transmit and receive signals in...

Question 24

____ satellites are the type used by the most popular satellite data service providers.&#10;A) Transponder&#10;B) Medium earth orbiting&#10;C) Low earth orbiting&#10;D) Geosynchronous earth orbiting

Accepted Answer

The answer of ____ satellites are the type used by...

Question 25

Describe the use of CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) to access a shared medium.

Accepted Answer

The answer of Describe the use of CSMA/CA (Carrier Sense...

Question 26

Most satellites circle the Earth ____ miles above the equator in a geosynchronous orbit.&#10;A) 100&#10;B) 1240&#10;C) 6,000&#10;D) 22,300

Accepted Answer

The answer of Most satellites circle the Earth ____ miles...

Question 27

Describe the wireless spectrum.

Accepted Answer

The answer of Describe the wireless spectrum....

Question 28

Describe the FHSS and DSSS spread spectrum technologies.

Accepted Answer

The answer of Describe the FHSS and DSSS spread spectrum...

Question 29

Discuss what must be taken into account when placing an access point on a WLAN.

Accepted Answer

The answer of Discuss what must be taken into account...

Question 30

Define and explain the MIMO innovation in the 802.11n standard. Include a description of the advantages it provides.

Accepted Answer

The answer of Define and explain the MIMO innovation in...

Question 31

If intermittent and difficult-to-diagnose wireless communication errors occur, ____ might be the culprit.&#10;A) incorrect encryption&#10;B) SSID mismatch&#10;C) interference&#10;D) incorrect antenna placement

Accepted Answer

The answer of If intermittent and difficult-to-diagnose wireless communication errors...

Question 32

Describe how interference can distort and weaken a wireless signal.

Accepted Answer

The answer of Describe how interference can distort and weaken...

Question 33

List and describe the three groups into which frame types are divided.

Accepted Answer

The answer of List and describe the three groups into...

Question 34

To establish a satellite Internet connection, each subscriber must have a ____.&#10;A) dish antenna&#10;B) line-of-sight antenna&#10;C) dish pathway&#10;D) source pathway

Accepted Answer

The answer of To establish a satellite Internet connection, each...

Question 35

Clients are able to exchange signals with satellites as long as they have a ____ path.&#10;A) view&#10;B) line-of-sight&#10;C) proprietary&#10;D) directional

Accepted Answer

The answer of Clients are able to exchange signals with...

Question 36

Define reassociation and provide two examples explaining when it occurs.

Accepted Answer

The answer of Define reassociation and provide two examples explaining...

Question 37

The use of multiple frequencies to transmit a signal is known as ____________________ technology.

Accepted Answer

The answer of The use of multiple frequencies to transmit...

Question 38

A(n) ____________________ assesses client requirements, facility characteristics, and coverage areas to determine an access point arrangement that will ensure reliable wireless connectivity within a given area.

Accepted Answer

The answer of A(n) ____________________ assesses client requirements, facility characteristics,...

Question 39

What is the purpose of the Frame Control field in an 802.11 frame?

Accepted Answer

The answer of What is the purpose of the Frame...

Question 40

Describe what an administrator can do if during a wireless router configuration, something goes awry.

Accepted Answer

The answer of Describe what an administrator can do if...

Question 41

Match between columns&#10;                        Premises: Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.&#10;The locations of the transmitter and receiver do not move.&#10;The locations of the transmitter and receiver do not move.&#10;The locations of the transmitter and receiver do not move.&#10;The locations of the transmitter and receiver do not move.&#10;The locations of the transmitter and receiver do not move.&#10;The locations of the transmitter and receiver do not move.&#10;The locations of the transmitter and receiver do not move.&#10;The locations of the transmitter and receiver do not move.&#10;The locations of the transmitter and receiver do not move.&#10;Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.&#10;Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.&#10;Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.&#10;Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.&#10;Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.&#10;Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.&#10;Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.&#10;Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.&#10;Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.&#10;Uses the 2.4-2.4835-GHz frequency range.&#10;Uses the 2.4-2.4835-GHz frequency range.&#10;Uses the 2.4-2.4835-GHz frequency range.&#10;Uses the 2.4-2.4835-GHz frequency range.&#10;Uses the 2.4-2.4835-GHz frequency range.&#10;Uses the 2.4-2.4835-GHz frequency range.&#10;Uses the 2.4-2.4835-GHz frequency range.&#10;Uses the 2.4-2.4835-GHz frequency range.&#10;Uses the 2.4-2.4835-GHz frequency range.&#10;Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.&#10;Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.&#10;Refers to the connection between a client's transceiver and the carrier's antenna.&#10;Refers to the connection between a client's transceiver and the carrier's antenna.&#10;Refers to the connection between a client's transceiver and the carrier's antenna.&#10;Refers to the connection between a client's transceiver and the carrier's antenna.&#10;Refers to the connection between a client's transceiver and the carrier's antenna.&#10;Refers to the connection between a client's transceiver and the carrier's antenna.&#10;Refers to the connection between a client's transceiver and the carrier's antenna.&#10;Refers to the connection between a client's transceiver and the carrier's antenna.&#10;Refers to the connection between a client's transceiver and the carrier's antenna.&#10;The receiver can be located anywhere within the transmitter's range.&#10;The receiver can be located anywhere within the transmitter's range.&#10;The receiver can be located anywhere within the transmitter's range.&#10;The receiver can be located anywhere within the transmitter's range.&#10;The receiver can be located anywhere within the transmitter's range.&#10;The receiver can be located anywhere within the transmitter's range.&#10;The receiver can be located anywhere within the transmitter's range.&#10;The receiver can be located anywhere within the transmitter's range.&#10;The receiver can be located anywhere within the transmitter's range.&#10;Boasts a maximum throughput of 600 Mbps.&#10;Boasts a maximum throughput of 600 Mbps.&#10;Boasts a maximum throughput of 600 Mbps.&#10;Boasts a maximum throughput of 600 Mbps.&#10;Boasts a maximum throughput of 600 Mbps.&#10;Boasts a maximum throughput of 600 Mbps.&#10;Boasts a maximum throughput of 600 Mbps.&#10;Boasts a maximum throughput of 600 Mbps.&#10;Boasts a maximum throughput of 600 Mbps.&#10;Represents the connection between a carrier's antenna and a client's transceiver.&#10;Represents the connection between a carrier's antenna and a client's transceiver.&#10;Represents the connection between a carrier's antenna and a client's transceiver.&#10;Represents the connection between a carrier's antenna and a client's transceiver.&#10;Represents the connection between a carrier's antenna and a client's transceiver.&#10;Represents the connection between a carrier's antenna and a client's transceiver.&#10;Represents the connection between a carrier's antenna and a client's transceiver.&#10;Represents the connection between a carrier's antenna and a client's transceiver.&#10;Represents the connection between a carrier's antenna and a client's transceiver.

Accepted Answer

The Answer of 802.11b and fixed wireless and 802.11a and is...

Deck 8: Wireless Networking