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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. In ________ wireless - the receiver can be located anywhere within the transmitter's range. This allows the receiver to roam from one place to another while continuing to pick up its signal.
Mobile Wireless
Wireless Router
Geosynchronous orbit
Downlink
2. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
Radiation pattern
Reflection
Narrowband
MEO (Medium Earth Orbiting)
3. An access point that provides routing functions.
RTS/CTS (Request to Send/Clear to Send)
Beacon Frame
Established the credentials the wireless interface will use to communicate securely with the access point
Wireless Router
4. A type of WLAN in which stations communicate with an access point and not directly with each other.
Range
2.4 GHz Band
Infrastructure WLAN
5 GHz
5. Which type of satellites is used to provide satellite Internet access?
Diffraction
Radiation pattern
Geosynchronous orbit
Channel Bonding
6. 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
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Bluetooth
Transponder
Wireless Gateway
7. A special identifier shared by BSSs that belong to the same ESS.
5 GHz Band
B. 2.4 GHz
Wireless Router
ESSID (Extended Service Set Identifier)
8. Regulated radio frequency band - 1/3rd range of 802.11b or g - Usually found in corporate environments.
Infrastructure WLAN
Spread Spectrum
5 GHz
Transponder
9. 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.
Passive Scanning
Transponder
Downlink
Association
10. 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
DSSS (Direct-Sequence Spread Spectrum)
Beacon Frame
Access Point
11. 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.
Active Scanning
Infrastructure WLAN
Hot Spot
Fading
12. An access point that provides routing functions and is used as a gateway.
Roaming
Wireless Gateway
Association
LEO (Low Earth Orbiting)
13. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
In the 802.11 standard - IEEE specifies what type of access method?
Scattering
Multipath signals
GEO (Geosynchronous Orbit or Geostationary Orbit)
14. 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.
Spread Spectrum
Frame aggregation - Channel bonding
2.4 GHz Band
2.4 GHz
15. 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.
PAN (Personal Area Network)
Directional Antenna
Downlink
Scattering
16. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
Passive Scanning
Wireless Router
Fixed Wireless
Beacon Frame
17. 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
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
2.4 GHz
Ad Hoc
BSSID (Basic Service Set Identifier)
18. 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
MEO (Medium Earth Orbiting)
Narrowband
Diffraction
Satellite Return
19. An end node on a network; used most often in the context of wireless networks.
Range
Omnidirectional Antenna
Wireless Broadband
Stations
20. 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.
Wireless Gateway
Scattering
Omnidirectional Antenna
Reassociation
21. A continuum of the electromagnetic waves used for data and voice communication. The _______ _______ (as defined by the FCC - which controls its use) spans frequencies between 9KHz and 300 GHz. each type of wireless service can be associated with one
Wireless Spectrum
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Bluetooth Special Interest Group (SIG)
Narrowband
22. 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.
Association
Narrowband
Wireless
Dial Return
23. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
Radiation Pattern
A beacon frame
Satellite Return
Hot Spot
24. Which techniques help to reduce overhead in 802.11n wireless transmission?
Roaming
Frame aggregation - Channel bonding
iwconfig
Omnidirectional Antenna
25. This type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.
BSSID (Basic Service Set Identifier)
canning
LOS (Line of Sight)
Diffraction
26. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
A beacon frame
802.11 transmission requirement that contributes to its inefficiency
2.4 GHz
Roaming
27. 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
Ad Hoc
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
2.4 GHz
LEO (Low Earth Orbiting)
28. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
Roaming
A beacon frame
Transponder
ESSID (Extended Service Set Identifier)
29. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
Scattering
Fading
Established the credentials the wireless interface will use to communicate securely with the access point
Wireless Broadband
30. In IEEE terminology - the identifier for a BSS (basic service set)
Stations
BSSID (Basic Service Set Identifier)
LEO (Low Earth Orbiting)
GEO (Geosynchronous Orbit or Geostationary Orbit)
31. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
LOS (Line of Sight)
Fixed Wireless
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
WLAN
32. 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.
Narrowband
Diffraction
Active Scanning
Dial Return
33. Used by newer types of WLANs. A range of frequencies that comprises four frequency bands: 5.1 - 5.3 - 5.4 - and 5.8GHz. It consists of 24 unlicensed bands - each 20 MHz wide. This band is used by WLANs that follow the 802.11a and 802.11n standards.
Geosynchronous orbit
Bluetooth Special Interest Group (SIG)
5 GHz Band
iwconfig
34. A connection from an orbiting satellite to an Earth -based receiver.
Fading
Ad Hoc
Wireless Gateway
Downlink
35. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
Fading
Downlink
WLAN
Hot Spot
36. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
Satellite Return
Access Point
Probe
Fixed Wireless
37. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
Ad Hoc
Access Point
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Diffraction
38. A unique character string used to identify an access point on an 802.11 network.
Satellite Return
SSID (Service Set Identifier)
Dial Return
Mobile Wireless
39. The signals made of electromagnetic energy that travel through the atmosphere.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
RTS/CTS (Request to Send/Clear to Send)
Wireless
Geosynchronous orbit
40. The term used to describe the recently released standards for high thoughput - long-distance digital data exchange over wireless connections. WiMAX (IEEE 802.16) is one example of a wireless broadband technology.
A beacon frame
In the 802.11 standard - IEEE specifies what type of access method?
Wireless Spectrum
Wireless Broadband
41. 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
FHSS (Frequency Hopping Spread Spectrum)
5 GHz Band
Satellite Return
Transponder
42. 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)
Diffraction
canning
Access Point
Spread Spectrum
43. In _____ - a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.
Narrowband
In the 802.11 standard - IEEE specifies what type of access method?
Passive Scanning
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
44. 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.
Scattering
Directional Antenna
Transponder
FHSS (Frequency Hopping Spread Spectrum)
45. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
Dial Return
Probe
Fixed Wireless
B. 2.4 GHz
46. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
Site Survey
GEO (Geosynchronous Orbit or Geostationary Orbit)
FHSS (Frequency Hopping Spread Spectrum)
Probe
47. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
WLAN
Bluetooth Special Interest Group (SIG)
LEO (Low Earth Orbiting)
Ad Hoc
48. The term used to refer to a satellite that maintains a constant distance from a point on the equator at every point in its orbit. Geosynchronous orbit satellites are the type used to provide satellite Internet access.
2.4 GHz
Downlink
GEO (Geosynchronous Orbit or Geostationary Orbit)
Transponder
49. 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.
Access Point
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Spread Spectrum
50. 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.
Active Scanning
Reflection
Site Survey
DSSS (Direct-Sequence Spread Spectrum)