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Test your basic knowledge |
Wireless Networking Vocab
Start Test
Study First
Subject
:
it-skills
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. An ______ ______ issues and receives wireless signals with equal strength and clarity in all directions. This type of antenna is used when many different receivers must be able to pick up the signal - or when the receiver's location is highly mobile.
RTS/CTS (Request to Send/Clear to Send)
Reflection
Bluetooth Special Interest Group (SIG)
Omnidirectional Antenna
2. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
Passive Scanning
Stations
Wireless
Multipath signals
3. A method used by wireless stations to detect the presence of an access point. In _____ _____ - the station issues a probe to each channel in its frequency range and waits for the access point to respond.
Bluetooth Special Interest Group (SIG)
LOS (Line of Sight)
A beacon frame
Active Scanning
4. This type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.
LEO (Low Earth Orbiting)
Diffraction
LOS (Line of Sight)
Bluetooth Special Interest Group (SIG)
5. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
Channel Bonding
802.11 transmission requirement that contributes to its inefficiency
In the 802.11 standard - IEEE specifies what type of access method?
Ad Hoc
6. Omnidirectional
Hot Spot
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Omnidirectional Antenna
Transponder
7. A unique character string used to identify an access point on an 802.11 network.
Site Survey
Hot Spot
ESSID (Extended Service Set Identifier)
SSID (Service Set Identifier)
8. The equipment on a satellite that receives an uplinked signal from Earth - amplifies the signal - modifies its frequency - then retransmits it (in a downlink) to an antenna on Earth.
Wireless Gateway
Transponder
MEO (Medium Earth Orbiting)
iwconfig
9. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
WLAN
Scattering
canning
2.4 GHz Band
10. A destination node must issue an acknowledgment for every packet that is received intact.
Active Scanning
Association
Ad Hoc
802.11 transmission requirement that contributes to its inefficiency
11. A change in a wireless signal's strength as a result of some of the electromagnetic energy being scattered - reflected - or diffracted after being issued by the transmitter.
Fading
RTS/CTS (Request to Send/Clear to Send)
Infrastructure WLAN
Geosynchronous orbit
12. A special identifier shared by BSSs that belong to the same ESS.
5 GHz Band
Beacon Frame
ESSID (Extended Service Set Identifier)
Radiation pattern
13. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
Channel Bonding
Hot Spot
PAN (Personal Area Network)
Dial Return
14. Another type of Spread-Spectrum signaling. In __________ - a signal's bits are distributed over an entire frequency band at once. Each bit is coded so that the receiver can reassemble the original signal upon receiving the bits.
Narrowband
Range
DSSS (Direct-Sequence Spread Spectrum)
In the 802.11 standard - IEEE specifies what type of access method?
15. A connection from an orbiting satellite to an Earth -based receiver.
Reassociation
Scattering
Bluetooth Special Interest Group (SIG)
Downlink
16. The signals made of electromagnetic energy that travel through the atmosphere.
Wireless
Probe
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
LOS (Line of Sight)
17. A device used on wireless LANs that transmits and receives wireless signals to and from multiple nodes and retransmits them to the rest of the network segment. Access points can connect a group of nodes with a network or two networks with each other.
GEO (Geosynchronous Orbit or Geostationary Orbit)
WLAN
Beacon Frame
Access Point
18. A type of satellite that orbits the Earth with an altitude between 100 and 900 miles - closer to the Earth's poles than the orbits of either GEO or MEO satellites. LEO satellites cover a smaller geographical range than GEO satellites and require less
LEO (Low Earth Orbiting)
Wireless Broadband
WLAN
FHSS (Frequency Hopping Spread Spectrum)
19. A method of satellite Internet access in which a subscriber receives data via a satellite downlink transmission - but sends data to the satellite via an analog modem (dial-up) connections.
802.11 transmission requirement that contributes to its inefficiency
ESSID (Extended Service Set Identifier)
Reassociation
Dial Return
20. When a wireless signal splits into secondary waves as it encounters an obstruction. The secondary waves continue to propagate in the direction in which they were split. (bending around an obstacle)
Scattering
Hot Spot
Reassociation
Diffraction
21. A type of satellite that orbits the Earth roughly 6000 to 12 -000 miles above its service - positioned between the equator and the poles. MEO satellites can cover a larger area of the Earth's surface than LEO satellites while using less power and cau
PAN (Personal Area Network)
MEO (Medium Earth Orbiting)
Infrastructure WLAN
Directional Antenna
22. In the context of wireless - the phenomenon that occurs when an electromagnetic wave encounters an obstacle and bounces back toward its source. A wireless signal will bounce off objects whose dimensions are large compared to the signal's average wave
Reflection
DSSS (Direct-Sequence Spread Spectrum)
Downlink
Radiation Pattern
23. A small (usually home) network composed of personal communications devices.
Access Point
Radiation pattern
Active Scanning
PAN (Personal Area Network)
24. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
Directional Antenna
Dial Return
iwconfig
Reassociation
25. A network access method used on 802.11 wireless networks. In CSMA/CA - before a node begins to send data it checks the medium. If it detects no transmission activity - it waits a brief - random amount of time - and then sends its transmission. If the
SSID (Service Set Identifier)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Infrastructure WLAN
802.11 transmission requirement that contributes to its inefficiency
26. A type of satellite Internet access service in which a subscriber sends and receives data to and from the Internet over the satellite link. This is a symmetrical technology - in which both upstream and downstream throughputs are advertised to reach 4
Satellite Return
Access Point
Established the credentials the wireless interface will use to communicate securely with the access point
Channel Bonding
27. This is the diffusion - or the reflection in multiple different directions - of a signal. This occurs when a wireless signal encounters an object that has small dimensions compared to the signal's wavelength.
In the 802.11 standard - IEEE specifies what type of access method?
Scattering
Narrowband
Multipath signals
28. An access point that provides routing functions and is used as a gateway.
LEO (Low Earth Orbiting)
LOS (Line of Sight)
Passive Scanning
Wireless Gateway
29. In IEEE terminology - the identifier for a BSS (basic service set)
SSID (Service Set Identifier)
iwconfig
BSSID (Basic Service Set Identifier)
Transponder
30. A group of access points and associated stations (or basic service sets) connected to the same LAN.
Wireless Router
Beacon Frame
Frame aggregation - Channel bonding
ESS (Extended Service Set Identifier)
31. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
SSID (Service Set Identifier)
Mobile Wireless
Satellite Return
Reassociation
32. An access point that provides routing functions.
Site Survey
Wireless Router
LOS (Line of Sight)
RTS/CTS (Request to Send/Clear to Send)
33. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
Roaming
Bluetooth Special Interest Group (SIG)
Fixed Wireless
Probe
34. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
Downlink
Bluetooth Special Interest Group (SIG)
ESSID (Extended Service Set Identifier)
Fixed Wireless
35. In the context of 802.11n wireless technology - the combination of two 20-MHz frequency band to create one 40-MHz frequency band that can carry more than twice the amount of data that a single 20-MHz band could. It's recommended for use only in the 5
ESSID (Extended Service Set Identifier)
Bluetooth Special Interest Group (SIG)
Channel Bonding
B. 2.4 GHz
36. The locations of the transmitter and receiver do not move. The transmitting antenna focuses its energy directly toward the receiving antenna. This results in a point to point link. (Advantage: receiver's location is predictable - energy need not be w
Multipath signals
Association
iwconfig
Fixed Wireless
37. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
Fading
iwconfig
Bluetooth
FHSS (Frequency Hopping Spread Spectrum)
38. Regulated radio frequency band - 1/3rd range of 802.11b or g - Usually found in corporate environments.
Passive Scanning
5 GHz
Fading
2.4 GHz Band
39. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
Scattering
Probe
B. 2.4 GHz
Stations
40. In the context of wireless networking - the communication that occurs between a station and an access point to enable the station to connect to the network via that access point.
Omnidirectional Antenna
Fixed Wireless
Wireless
Association
41. A wireless networking standard that uses FHSS signaling in the 2.4GHz band to achieve a maximum throughput of either 723 Kbps or 2.1 Mbps - depending on the version. Bluetooth was designed for use primarily with small office or home networks in which
Radiation Pattern
In the 802.11 standard - IEEE specifies what type of access method?
Bluetooth
Infrastructure WLAN
42. In the context of 802.11n wireless networking - the ability for access points to issue multiple signals to stations - thereby multiplying the signal's strength and increasing their range and data-carrying capacity. Because the signals follow multipat
MIMO (Multiple Input-Multiple Output)
Active Scanning
Wireless Broadband
B. 2.4 GHz
43. The range of radio frequencies from 2.4 to 2.4835 GHz. This band allows for 11 unlicensed channels - and is used by WLANs that follow the popular 802.11b and 802.11g standards.
5 GHz Band
DSSS (Direct-Sequence Spread Spectrum)
2.4 GHz Band
Access Point
44. Which type of satellites is used to provide satellite Internet access?
Geosynchronous orbit
Spread Spectrum
Directional Antenna
Wireless Broadband
45. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
Hot Spot
Association
Stations
B. 2.4 GHz
46. A. CSMA/CA
Beacon Frame
In the 802.11 standard - IEEE specifies what type of access method?
Downlink
2.4 GHz Band
47. An end node on a network; used most often in the context of wireless networks.
Stations
canning
Association
Multipath signals
48. In the context of wireless networking - the process in which a station listens to several channels within a frequency range for a beacon issued by an access point.
canning
MIMO (Multiple Input-Multiple Output)
Fixed Wireless
Passive Scanning
49. A ______ ______ issues wireless signals along a single direction. This type of antenna is used when the source needs to communicate with one destination - as in a point to point link.
iwconfig
Roaming
Directional Antenna
Range
50. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
Satellite Return
A beacon frame
Range
Hot Spot