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Network+ Guide to Networks - Ch 8
Network+ Ch 8
26
Computer Networking
04/16/2012

Additional Computer Networking Flashcards

 


 

Cards

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