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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 ______ ______ 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.
Beacon Frame
Radiation Pattern
Stations
Directional Antenna
2. A special identifier shared by BSSs that belong to the same ESS.
ESSID (Extended Service Set Identifier)
A beacon frame
canning
MEO (Medium Earth Orbiting)
3. In IEEE terminology - the identifier for a BSS (basic service set)
RTS/CTS (Request to Send/Clear to Send)
BSSID (Basic Service Set Identifier)
Bluetooth
Wireless Broadband
4. 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.
Ad Hoc
Established the credentials the wireless interface will use to communicate securely with the access point
MEO (Medium Earth Orbiting)
GEO (Geosynchronous Orbit or Geostationary Orbit)
5. In _____ - a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.
Narrowband
Wireless Spectrum
Wireless
Ad Hoc
6. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Hot Spot
Diffraction
LEO (Low Earth Orbiting)
7. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
Site Survey
Infrastructure WLAN
Bluetooth
Radiation Pattern
8. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Bluetooth Special Interest Group (SIG)
Reflection
Bluetooth
9. 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
In the 802.11 standard - IEEE specifies what type of access method?
Geosynchronous orbit
Bluetooth
Directional Antenna
10. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
Ad Hoc
Wireless Broadband
Bluetooth Special Interest Group (SIG)
ESSID (Extended Service Set Identifier)
11. The signals made of electromagnetic energy that travel through the atmosphere.
ESS (Extended Service Set Identifier)
FHSS (Frequency Hopping Spread Spectrum)
Wireless
MEO (Medium Earth Orbiting)
12. A destination node must issue an acknowledgment for every packet that is received intact.
802.11 transmission requirement that contributes to its inefficiency
Directional Antenna
Probe
LOS (Line of Sight)
13. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
Hot Spot
802.11 transmission requirement that contributes to its inefficiency
Directional Antenna
2.4 GHz
14. This type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.
Active Scanning
Wireless Broadband
LOS (Line of Sight)
802.11 transmission requirement that contributes to its inefficiency
15. The use of multiple frequencies to transmit a signal. (because the signal is spread out over the wireless spectrum)
RTS/CTS (Request to Send/Clear to Send)
Association
Frame aggregation - Channel bonding
Spread Spectrum
16. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
Beacon Frame
DSSS (Direct-Sequence Spread Spectrum)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
LOS (Line of Sight)
17. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
Diffraction
Access Point
Radiation pattern
Directional Antenna
18. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
B. 2.4 GHz
iwconfig
Spread Spectrum
LEO (Low Earth Orbiting)
19. 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.
Scattering
MEO (Medium Earth Orbiting)
Association
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
20. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
In the 802.11 standard - IEEE specifies what type of access method?
ESS (Extended Service Set Identifier)
Established the credentials the wireless interface will use to communicate securely with the access point
WLAN
21. A small (usually home) network composed of personal communications devices.
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?
Wireless Spectrum
PAN (Personal Area Network)
22. An access point that provides routing functions and is used as a gateway.
5 GHz
Passive Scanning
Wireless Gateway
Mobile Wireless
23. A unique character string used to identify an access point on an 802.11 network.
SSID (Service Set Identifier)
iwconfig
Radiation Pattern
5 GHz Band
24. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
5 GHz Band
Hot Spot
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Roaming
25. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
Fading
B. 2.4 GHz
ESS (Extended Service Set Identifier)
5 GHz
26. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
A beacon frame
Roaming
Reassociation
Infrastructure WLAN
27. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
Reflection
Range
MEO (Medium Earth Orbiting)
Reassociation
28. 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.
Multipath signals
DSSS (Direct-Sequence Spread Spectrum)
B. 2.4 GHz
5 GHz Band
29. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
WLAN
Active Scanning
2.4 GHz
canning
30. An end node on a network; used most often in the context of wireless networks.
Stations
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
WLAN
Fixed Wireless
31. 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.
LEO (Low Earth Orbiting)
Radiation Pattern
DSSS (Direct-Sequence Spread Spectrum)
Established the credentials the wireless interface will use to communicate securely with the access point
32. 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
Bluetooth
802.11 transmission requirement that contributes to its inefficiency
LOS (Line of Sight)
33. 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.
GEO (Geosynchronous Orbit or Geostationary Orbit)
Frame aggregation - Channel bonding
Dial Return
Active Scanning
34. 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
Reflection
Bluetooth Special Interest Group (SIG)
Probe
35. 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.
Range
5 GHz Band
Access Point
Diffraction
36. 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
ESSID (Extended Service Set Identifier)
Channel Bonding
Multipath signals
Wireless Spectrum
37. 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
Radiation Pattern
Scattering
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
Spread Spectrum
38. Which techniques help to reduce overhead in 802.11n wireless transmission?
Wireless Gateway
PAN (Personal Area Network)
Wireless
Frame aggregation - Channel bonding
39. 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)
Mobile Wireless
Established the credentials the wireless interface will use to communicate securely with the access point
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
40. 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)
Beacon Frame
Wireless Router
Narrowband
Diffraction
41. 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.
Passive Scanning
Association
Fading
Channel Bonding
42. Regulated radio frequency band - 1/3rd range of 802.11b or g - Usually found in corporate environments.
Narrowband
5 GHz
Transponder
Wireless
43. 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.
Probe
Passive Scanning
Range
Wireless Spectrum
44. 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.
iwconfig
Transponder
RTS/CTS (Request to Send/Clear to Send)
Geosynchronous orbit
45. 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.
Bluetooth Special Interest Group (SIG)
Hot Spot
Fixed Wireless
Wireless Broadband
46. 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.
Mobile Wireless
RTS/CTS (Request to Send/Clear to Send)
Association
2.4 GHz Band
47. 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
2.4 GHz
Range
Fixed Wireless
Bluetooth Special Interest Group (SIG)
48. 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)
Association
BSSID (Basic Service Set Identifier)
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
49. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
MEO (Medium Earth Orbiting)
Multipath signals
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
B. 2.4 GHz
50. 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
Multipath signals
Satellite Return
Roaming
5 GHz