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Networking + (2022) > Chapter 8 Quiz > Flashcards

Chapter 8 Quiz Flashcards

1
Q

WiMAX is defined by the IEEE 802.11 standard. T/F

A

False

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2
Q

____ satellites are the type used by the most popular satellite data service providers.

A

Geosynchronous earth orbiting

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3
Q

____ is an 802.11n feature that allows two adjacent 20-MHz channels to be combined to make a 40-MHz channel.

A

Channel bonding

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4
Q

If intermittent and difficult-to-diagnose wireless communication errors occur, ____ might be the culprit.

A

interference

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5
Q

An 802.11g antenna has a geographic range of ____ meters.

A

100

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6
Q

To establish a satellite Internet connection, each subscriber must have a ____.

A

dish antenna

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7
Q

Which satellites transmit and receive signals in the 12 to 18 GHz band?

A

Ku-

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8
Q

____ is a command-line function for viewing and setting wireless interface parameters and it is common to nearly all versions of Linux and UNIX.

A

iwconfig

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9
Q

In the case of connecting two WLANs, access points could be as far as ____ feet apart.

A

1000

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10
Q

Clients are able to exchange signals with satellites as long as they have a ____ path.

A

line-of-sight

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11
Q

The average geographic range for an 802.11a antenna is ____ meters.

A

20

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12
Q

Wireless signals experience attenuation. T/F

A

True

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13
Q

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

A

False

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14
Q

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

A

False

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15
Q

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

A

diffraction

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16
Q

In __ wireless systems, the transmitting antenna focuses its energy directly toward the receiving antenna which results in a point-to-point link.

A

Fixed

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17
Q

__ is a significant problem for wireless communications because the atmosphere is saturated with electromagnetic waves.

A

Interference

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18
Q

A directional antenna issues wireless signals along a(n) __ direction.

A

Single

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19
Q

In wireless communication, to exchange information, two antennas must be tuned to the same __.

A

Frequency

20
Q

In ____ wireless systems, the transmitting antenna focuses its energy directly toward the receiving antenna which results in a point-to-point link.

A

fixed

21
Q

In ____ scanning, the station transmits a special frame, known as a probe, on all available channels within its frequency range.

A

active

22
Q

A unique characteristic of the 802.11 data frame is its ____ field.

A

Sequence Control

23
Q

____ is the least popular WLAN standard.

A

802.11a

24
Q

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

A

True

25
Q

In wireless communication, to exchange information, two antennas must be tuned to the same ____.
port
variance
frequency
attenuation speed

A

frequency

26
Q

A directional antenna issues wireless signals along a(n) ____ direction.
narrow
single
wide
open

A

single

27
Q

In ____, a wireless signal splits into secondary waves when it encounters an obstruction.
bounce back
reflection
scattering
diffraction

A

diffraction

28
Q

____ is a significant problem for wireless communications because the atmosphere is saturated with electromagnetic waves.
Interference
Attenuation
Fading
Diffraction

A

interference

29
Q

In ____ wireless systems, the transmitting antenna focuses its energy directly toward the receiving antenna which results in a point-to-point link.
open
variable
fixed
mobile

A

fixed

30
Q

In the case of connecting two WLANs, access points could be as far as ____ feet apart.
500
1000
1200
800

A

1000

31
Q

In ____ scanning, the station transmits a special frame, known as a probe, on all available channels within its frequency range.
passive
active
fixed
open

A

active

32
Q

A unique characteristic of the 802.11 data frame is its ____ field.
Sequence Control
Frame Control
Data
Duration

A

Sequence Control

33
Q

The average geographic range for an 802.11a antenna is ____ meters.
100
600
330
20

A

20

34
Q

____ is the least popular WLAN standard.
802.11a
802.11b
802.11g
802.11n

A

802.11a

35
Q

An 802.11g antenna has a geographic range of ____ meters.
330
20
100
300

A

100

36
Q

____ may use either the 2.4-GHz or 5-GHz frequency range.
802.11n
802.11b
802.11g
802.11a

A

802.11n

37
Q

____ is an 802.11n feature that allows two adjacent 20-MHz channels to be combined to make a 40-MHz channel.
Frame aggregation
Channel aggregation
Channel bonding
Frame bonding

A

Channel bonding

38
Q

____ is an 802.11n network feature allowing the combination of multiple frames into one larger frame.
Frame aggregation
Channel bonding
Frame bonding
Channel aggregation

A

Frame aggregation

39
Q

____ is a command-line function for viewing and setting wireless interface parameters and it is common to nearly all versions of Linux and UNIX.
config
ipconfig
ivconfig
iwconfig

A

iwconfig

40
Q

If intermittent and difficult-to-diagnose wireless communication errors occur, ____ might be the culprit.
incorrect antenna placement
SSID mismatch
incorrect encryption
interference

A

interference

41
Q

Most satellites circle the Earth ____ miles above the equator in a geosynchronous orbit.
100
22,300
1240
6,000

A

22,300

42
Q

____ satellites are the type used by the most popular satellite data service providers.
Geosynchronous earth orbiting
Low earth orbiting
Medium earth orbiting
Transponder

A

Geosynchronous earth orbiting

43
Q

Which satellites transmit and receive signals in the 12 to 18 GHz band?
S-
L-
Ku-
Ka-

A

Ku-

44
Q

Clients are able to exchange signals with satellites as long as they have a ____ path.
view
line-of-sight
directional
proprietary

A

line-of-sight

44
Q

Clients are able to exchange signals with satellites as long as they have a ____ path.
view
line-of-sight
directional
proprietary

A

line-of-sight

45
Q

To establish a satellite Internet connection, each subscriber must have a ____.
dish antenna
line-of-sight antenna
source pathway
dish pathway

A

dish antenna

Networking + (2022) (20 decks)

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