How can we help?

You can also find more resources in our Help Center.

26 terms

network2 Ch. 8

STUDY
PLAY
____________________ means that satellites orbit the Earth at the same rate as the Earth turns.
Geosynchronous orbit
____ is a command-line function for viewing and setting wireless interface parameters and it is common to nearly all versions of Linux and UNIX.
iwconfig
In ____, a wireless signal splits into secondary waves when it encounters an obstruction.
diffraction
____ is an 802.11n network feature allowing the combination of multiple frames into one larger frame.
Frame aggregation
If intermittent and difficult-to-diagnose wireless communication errors occur, ____ might be the culprit.
interference
The ______________________________ is a unique character string used to identify an access point.
SSID
In wireless communication, to exchange information, two antennas must be tuned to the same ____.
frequency
The use of multiple frequencies to transmit a signal is known as ____________________ technology.
spread-spectrum
An 802.11g antenna has a geographic range of ____ meters.
100
____ is the least popular WLAN standard.
802.11a
Satellite return Internet access is a(n) ____ technology.
symmetrical
Using Bluetooth version 2.0, communicating nodes can be as far as ____ meters apart.
30
Places where wireless Internet access is available to the public are called ____________________.
hot spots
A unique characteristic of the 802.11 data frame is its ____ field.
Sequence Control
Satellite Internet access providers typically use frequencies in the C- or ____ bands.
Ku-
A directional antenna issues wireless signals along a(n) ____ direction.
single
____ satellites are the type used by the most popular satellite Internet access service providers.
Geosynchronous orbiting
In ____ wireless systems, the result is a point-to-point link.
fixed
____ may use either the 2.4-GHz or 5-GHz frequency range.
802.11n
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.
site survey
The average geographic range for an 802.11a antenna is ____ meters.
20
____ is a most significant problem for wireless communications because the atmosphere is saturated with electromagnetic waves.
Interference
Dial return satellite Internet access is a(n) ____ technology.
asymmetrical
In ____ scanning, the station transmits a special frame, known as a probe, on all available channels within its frequency range.
active
____ is an 802.11n feature that allows two adjacent 20-MHz channels to be combined to make a 40-MHz channel.
Channel bonding
LEO satellites orbit the Earth with an altitude as low as ____ miles.
100