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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. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
Stations
Fixed Wireless
Ad Hoc
ESSID (Extended Service Set Identifier)
2. 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
A beacon frame
Probe
MEO (Medium Earth Orbiting)
Bluetooth
3. In IEEE terminology - the identifier for a BSS (basic service set)
Bluetooth
BSSID (Basic Service Set Identifier)
Omnidirectional Antenna
Spread Spectrum
4. 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.
Narrowband
5 GHz
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Active Scanning
5. An end node on a network; used most often in the context of wireless networks.
Stations
Frame aggregation - Channel bonding
Reflection
Wireless Spectrum
6. 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
Geosynchronous orbit
LEO (Low Earth Orbiting)
Ad Hoc
Bluetooth Special Interest Group (SIG)
7. 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.
Transponder
Directional Antenna
A beacon frame
SSID (Service Set Identifier)
8. 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)
Reflection
Multipath signals
Diffraction
DSSS (Direct-Sequence Spread Spectrum)
9. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
iwconfig
B. 2.4 GHz
GEO (Geosynchronous Orbit or Geostationary Orbit)
Beacon Frame
10. 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
5 GHz
Ad Hoc
802.11 transmission requirement that contributes to its inefficiency
11. 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.
Narrowband
Established the credentials the wireless interface will use to communicate securely with the access point
5 GHz
Wireless Broadband
12. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
FHSS (Frequency Hopping Spread Spectrum)
SSID (Service Set Identifier)
Probe
Bluetooth Special Interest Group (SIG)
13. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
Hot Spot
Transponder
Narrowband
SSID (Service Set Identifier)
14. The process a wireless station undergoes to find an access point.
FHSS (Frequency Hopping Spread Spectrum)
MIMO (Multiple Input-Multiple Output)
canning
Downlink
15. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
MIMO (Multiple Input-Multiple Output)
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Multipath signals
Scattering
16. 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
Wireless
Radiation Pattern
Fixed Wireless
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
17. 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.
DSSS (Direct-Sequence Spread Spectrum)
Omnidirectional Antenna
Established the credentials the wireless interface will use to communicate securely with the access point
Diffraction
18. A group of access points and associated stations (or basic service sets) connected to the same LAN.
Narrowband
ESS (Extended Service Set Identifier)
Range
Wireless Router
19. 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.
Fixed Wireless
BSSID (Basic Service Set Identifier)
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Access Point
20. 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.
Satellite Return
Spread Spectrum
Passive Scanning
2.4 GHz
21. 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
Mobile Wireless
Roaming
MEO (Medium Earth Orbiting)
Channel Bonding
22. 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.
Fixed Wireless
LEO (Low Earth Orbiting)
Mobile Wireless
Radiation Pattern
23. 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)
2.4 GHz Band
Reassociation
Beacon Frame
24. ISM Range - Radio frequency band that may experience home appliance interference - Unregulated radio frequency band.
Transponder
WLAN
2.4 GHz
Beacon Frame
25. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
Bluetooth Special Interest Group (SIG)
Wireless Spectrum
Geosynchronous orbit
Radiation Pattern
26. 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.
Radiation pattern
LOS (Line of Sight)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
GEO (Geosynchronous Orbit or Geostationary Orbit)
27. A type of WLAN in which stations communicate with an access point and not directly with each other.
Directional Antenna
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Established the credentials the wireless interface will use to communicate securely with the access point
Infrastructure WLAN
28. 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.
802.11 transmission requirement that contributes to its inefficiency
Site Survey
Bluetooth Special Interest Group (SIG)
Transponder
29. An exchange in which a wireless station requests the exclusive right to communicate with an access point and the access point confirms that it has granted that request.
2.4 GHz
Hot Spot
Diffraction
RTS/CTS (Request to Send/Clear to Send)
30. A unique character string used to identify an access point on an 802.11 network.
SSID (Service Set Identifier)
MIMO (Multiple Input-Multiple Output)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Probe
31. The use of multiple frequencies to transmit a signal. (because the signal is spread out over the wireless spectrum)
BSSID (Basic Service Set Identifier)
Spread Spectrum
PAN (Personal Area Network)
GEO (Geosynchronous Orbit or Geostationary Orbit)
32. 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.
Multipath signals
Site Survey
Fading
Infrastructure WLAN
33. 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.
Directional Antenna
Geosynchronous orbit
Scattering
Downlink
34. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
Radiation pattern
A beacon frame
Wireless Router
SSID (Service Set Identifier)
35. A destination node must issue an acknowledgment for every packet that is received intact.
802.11 transmission requirement that contributes to its inefficiency
ESS (Extended Service Set Identifier)
Wireless Spectrum
canning
36. Omnidirectional
5 GHz Band
Stations
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?
37. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
Beacon Frame
Mobile Wireless
GEO (Geosynchronous Orbit or Geostationary Orbit)
5 GHz
38. 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.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Fixed Wireless
B. 2.4 GHz
Association
39. 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)
Wireless
Channel Bonding
Geosynchronous orbit
40. Which type of satellites is used to provide satellite Internet access?
Access Point
2.4 GHz Band
LOS (Line of Sight)
Geosynchronous orbit
41. 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
PAN (Personal Area Network)
Active Scanning
MIMO (Multiple Input-Multiple Output)
ESS (Extended Service Set Identifier)
42. In _____ - a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.
Frame aggregation - Channel bonding
Site Survey
Radiation pattern
Narrowband
43. In the context of wireless networking - an assessment of 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
Range
Access Point
Diffraction
44. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
ESS (Extended Service Set Identifier)
FHSS (Frequency Hopping Spread Spectrum)
Bluetooth Special Interest Group (SIG)
2.4 GHz Band
45. 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.
Wireless Router
Fixed Wireless
2.4 GHz Band
DSSS (Direct-Sequence Spread Spectrum)
46. A special identifier shared by BSSs that belong to the same ESS.
Fading
WLAN
ESSID (Extended Service Set Identifier)
RTS/CTS (Request to Send/Clear to Send)
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.
Geosynchronous orbit
ESSID (Extended Service Set Identifier)
Bluetooth Special Interest Group (SIG)
MIMO (Multiple Input-Multiple Output)
48. Which techniques help to reduce overhead in 802.11n wireless transmission?
Infrastructure WLAN
Hot Spot
Frame aggregation - Channel bonding
iwconfig
49. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
iwconfig
Wireless Spectrum
2.4 GHz Band
GEO (Geosynchronous Orbit or Geostationary Orbit)
50. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
5 GHz
Radiation pattern
B. 2.4 GHz
DSSS (Direct-Sequence Spread Spectrum)