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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. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
Association
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Radiation pattern
GEO (Geosynchronous Orbit or Geostationary Orbit)
2. 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.
Fixed Wireless
Beacon Frame
Transponder
Directional Antenna
3. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.
Range
Roaming
Ad Hoc
Wireless Gateway
4. 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
canning
Bluetooth Special Interest Group (SIG)
Hot Spot
5. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
Reflection
Geosynchronous orbit
Wireless Spectrum
Established the credentials the wireless interface will use to communicate securely with the access point
6. 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
Satellite Return
Ad Hoc
Reflection
Passive Scanning
7. A. CSMA/CA
In the 802.11 standard - IEEE specifies what type of access method?
Ad Hoc
2.4 GHz Band
Omnidirectional Antenna
8. Which type of satellites is used to provide satellite Internet access?
Passive Scanning
Range
Geosynchronous orbit
Ad Hoc
9. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
FHSS (Frequency Hopping Spread Spectrum)
GEO (Geosynchronous Orbit or Geostationary Orbit)
Radiation pattern
Satellite Return
10. 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.
Transponder
Bluetooth
Reassociation
RTS/CTS (Request to Send/Clear to Send)
11. A connection from an orbiting satellite to an Earth -based receiver.
Downlink
Wireless Router
Radiation Pattern
Bluetooth
12. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
LEO (Low Earth Orbiting)
Bluetooth
Roaming
2.4 GHz Band
13. 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.
RTS/CTS (Request to Send/Clear to Send)
Reassociation
Beacon Frame
DSSS (Direct-Sequence Spread Spectrum)
14. An access point that provides routing functions.
Passive Scanning
Dial Return
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Wireless Router
15. 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.
LOS (Line of Sight)
ESS (Extended Service Set Identifier)
GEO (Geosynchronous Orbit or Geostationary Orbit)
RTS/CTS (Request to Send/Clear to Send)
16. 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.
Radiation Pattern
Passive Scanning
Stations
Wireless Gateway
17. 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
FHSS (Frequency Hopping Spread Spectrum)
Frame aggregation - Channel bonding
MIMO (Multiple Input-Multiple Output)
Bluetooth
18. 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.
B. 2.4 GHz
LOS (Line of Sight)
Site Survey
Diffraction
19. The process a wireless station undergoes to find an access point.
canning
Passive Scanning
802.11 transmission requirement that contributes to its inefficiency
Hot Spot
20. 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
Mobile Wireless
WLAN
Geosynchronous orbit
MIMO (Multiple Input-Multiple Output)
21. 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 Spectrum
Downlink
WLAN
DSSS (Direct-Sequence Spread Spectrum)
22. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
GEO (Geosynchronous Orbit or Geostationary Orbit)
Multipath signals
Frame aggregation - Channel bonding
Beacon Frame
23. 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
Bluetooth Special Interest Group (SIG)
Satellite Return
SSID (Service Set Identifier)
GEO (Geosynchronous Orbit or Geostationary Orbit)
24. A unique character string used to identify an access point on an 802.11 network.
Roaming
Radiation Pattern
SSID (Service Set Identifier)
Narrowband
25. 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.
Passive Scanning
MEO (Medium Earth Orbiting)
Reflection
Access Point
26. An end node on a network; used most often in the context of wireless networks.
iwconfig
A beacon frame
5 GHz
Stations
27. 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.
2.4 GHz
Satellite Return
5 GHz Band
Range
28. 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.
Omnidirectional Antenna
GEO (Geosynchronous Orbit or Geostationary Orbit)
Active Scanning
Fixed Wireless
29. 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
BSSID (Basic Service Set Identifier)
Bluetooth Special Interest Group (SIG)
Wireless Spectrum
Channel Bonding
30. A special identifier shared by BSSs that belong to the same ESS.
Channel Bonding
Radiation pattern
ESSID (Extended Service Set Identifier)
Diffraction
31. Which techniques help to reduce overhead in 802.11n wireless transmission?
Stations
Frame aggregation - Channel bonding
Dial Return
Wireless Gateway
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.
Fading
B. 2.4 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?
ESSID (Extended Service Set Identifier)
33. 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.
GEO (Geosynchronous Orbit or Geostationary Orbit)
Radiation pattern
Association
MEO (Medium Earth Orbiting)
34. 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
A beacon frame
Beacon Frame
LEO (Low Earth Orbiting)
Transponder
35. 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
Fixed Wireless
BSSID (Basic Service Set Identifier)
Reassociation
Wireless Spectrum
36. 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.
iwconfig
LOS (Line of Sight)
Scattering
BSSID (Basic Service Set Identifier)
37. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
Reassociation
WLAN
Wireless Broadband
Probe
38. 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
SSID (Service Set Identifier)
DSSS (Direct-Sequence Spread Spectrum)
Range
MEO (Medium Earth Orbiting)
39. 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
Fixed Wireless
Radiation Pattern
Geosynchronous orbit
Wireless Gateway
40. A destination node must issue an acknowledgment for every packet that is received intact.
Satellite Return
802.11 transmission requirement that contributes to its inefficiency
BSSID (Basic Service Set Identifier)
2.4 GHz
41. The signals made of electromagnetic energy that travel through the atmosphere.
LEO (Low Earth Orbiting)
WLAN
Wireless
B. 2.4 GHz
42. An access point that provides routing functions and is used as a gateway.
Active Scanning
B. 2.4 GHz
Reassociation
Wireless Gateway
43. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
ESS (Extended Service Set Identifier)
Hot Spot
Transponder
44. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
Active Scanning
A beacon frame
Stations
Transponder
45. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
Directional Antenna
Bluetooth
Infrastructure WLAN
FHSS (Frequency Hopping Spread Spectrum)
46. 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.
Wireless Broadband
SSID (Service Set Identifier)
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Wireless Gateway
47. 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.
MEO (Medium Earth Orbiting)
Active Scanning
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
2.4 GHz
48. The use of multiple frequencies to transmit a signal. (because the signal is spread out over the wireless spectrum)
Spread Spectrum
Infrastructure WLAN
Association
Geosynchronous orbit
49. In IEEE terminology - the identifier for a BSS (basic service set)
2.4 GHz Band
5 GHz Band
Narrowband
BSSID (Basic Service Set Identifier)
50. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
Diffraction
Ad Hoc
B. 2.4 GHz
WLAN