T/F: Wireless signals experience attenuation.
T/F: Spread spectrum is a popular way of making wireless transmissions more secure.
T/F: Wireless networks are laid out using the same topologies as wired networks.
T/F: If a station detects the presence of several access points, it will always choose the closest access point.
T/F: WiMAX is defined by the IEEE 802.11 standard.
In wireless communication, to exchange information, two antennas must be tuned to the same ____.
A directional antenna issues wireless signals along a(n) ____ direction.
In ____, a wireless signal splits into secondary waves when it encounters an obstruction.
____ is a most significant problem for wireless communications because the atmosphere is saturated with electromagnetic waves.
In ____ wireless systems, the result is a point-to-point link.
In ____ scanning, the station transmits a special frame, known as a probe, on all available channels within its frequency range.
A unique characteristic of the 802.11 data frame is its ____ field.
The average geographic range for an 802.11a antenna is ____ meters.
An 802.11g antenna has a geographic range of ____ meters.
____ may use either the 2.4-GHz or 5-GHz frequency range.
____ is an 802.11n feature that allows two adjacent 20-MHz channels to be combined to make a 40-MHz channel.
____ is an 802.11n network feature allowing the combination of multiple frames into one larger frame.
Using Bluetooth version 2.0, communicating nodes can be as far as ____ meters apart.
____ is a command-line function for viewing and setting wireless interface parameters and it is common to nearly all versions of Linux and UNIX.
If intermittent and difficult-to-diagnose wireless communication errors occur, ____ might be the culprit.
LEO satellites orbit the Earth with an altitude as low as ____ miles.
____ satellites are the type used by the most popular satellite Internet access service providers.
Satellite Internet access providers typically use frequencies in the C- or ____ bands.
Dial return satellite Internet access is a(n) ____ technology.
Satellite return Internet access is a(n) ____ technology.
The use of multiple frequencies to transmit a signal is known as ________ technology.
The _____________ is a unique character string used to identify an access point.
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.
Places where wireless Internet access is available to the public are called ____________________.
____________________ means that satellites orbit the Earth at the same rate as the Earth turns.
Uses the 2.4-GHz frequency band and provides a maximum theoretical throughput of 54 Mbps.
Uses DSSS (direct-sequence spread spectrum) signaling.
Accepts wireless signals from multiple nodes and retransmits them to the rest of the network.
The locations of the transmitter and receiver do not move.
The receiver can be located anywhere within the transmitter's range.
Boasts a maximum throughput of 600 Mbps.
Transmission from a satellite transponder to an earth-based dish-shaped antenna.
Uses channels in the 5-GHz band and provides a maximum theoretical throughput of 54 Mbps.
The creation of a communications channel for a transmission from an Earth-based transmitter to an orbiting satellite.
____ is the least popular WLAN standard.