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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 unique character string used to identify an access point on an 802.11 network.
Radiation pattern
SSID (Service Set Identifier)
802.11 transmission requirement that contributes to its inefficiency
Wireless Broadband
2. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
Passive Scanning
iwconfig
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
BSSID (Basic Service Set Identifier)
3. 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
LEO (Low Earth Orbiting)
Wireless Spectrum
MIMO (Multiple Input-Multiple Output)
Established the credentials the wireless interface will use to communicate securely with the access point
4. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
Probe
Omnidirectional Antenna
Site Survey
Infrastructure WLAN
5. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
B. 2.4 GHz
Association
Ad Hoc
MIMO (Multiple Input-Multiple Output)
6. 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.
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Wireless Spectrum
Multipath signals
Scattering
7. 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.
Frame aggregation - Channel bonding
Mobile Wireless
RTS/CTS (Request to Send/Clear to Send)
Infrastructure WLAN
8. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
Radiation pattern
Fading
Established the credentials the wireless interface will use to communicate securely with the access point
Wireless
9. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
Access Point
Fixed Wireless
Bluetooth Special Interest Group (SIG)
Ad Hoc
10. 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.
MIMO (Multiple Input-Multiple Output)
Site Survey
Hot Spot
PAN (Personal Area Network)
11. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
Wireless Gateway
Beacon Frame
Probe
Radiation Pattern
12. A type of WLAN in which stations communicate with an access point and not directly with each other.
LOS (Line of Sight)
Roaming
Infrastructure WLAN
Association
13. 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
Mobile Wireless
LEO (Low Earth Orbiting)
Downlink
ESSID (Extended Service Set Identifier)
14. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
Wireless
Range
GEO (Geosynchronous Orbit or Geostationary Orbit)
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
15. 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
2.4 GHz Band
ESS (Extended Service Set Identifier)
MEO (Medium Earth Orbiting)
Wireless Spectrum
16. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
5 GHz Band
iwconfig
Radiation Pattern
Bluetooth Special Interest Group (SIG)
17. 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.
Reflection
DSSS (Direct-Sequence Spread Spectrum)
Wireless
Diffraction
18. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
Reassociation
Wireless Gateway
Wireless Broadband
Site Survey
19. An access point that provides routing functions.
Bluetooth Special Interest Group (SIG)
Satellite Return
Wireless Router
Omnidirectional Antenna
20. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
ESSID (Extended Service Set Identifier)
Hot Spot
A beacon frame
Spread Spectrum
21. 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.
5 GHz
Mobile Wireless
Radiation Pattern
Stations
22. 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
PAN (Personal Area Network)
Beacon Frame
Reflection
23. In _____ - a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.
Narrowband
ESSID (Extended 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?
Stations
24. An end node on a network; used most often in the context of wireless networks.
Stations
GEO (Geosynchronous Orbit or Geostationary Orbit)
SSID (Service Set Identifier)
Downlink
25. Which type of satellites is used to provide satellite Internet access?
Beacon Frame
DSSS (Direct-Sequence Spread Spectrum)
LEO (Low Earth Orbiting)
Geosynchronous orbit
26. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
Wireless Spectrum
MIMO (Multiple Input-Multiple Output)
Hot Spot
Roaming
27. A small (usually home) network composed of personal communications devices.
Hot Spot
PAN (Personal Area Network)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
B. 2.4 GHz
28. An access point that provides routing functions and is used as a gateway.
Spread Spectrum
Dial Return
Range
Wireless Gateway
29. 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.
Radiation pattern
Fading
iwconfig
Wireless Router
30. The signals made of electromagnetic energy that travel through the atmosphere.
Frame aggregation - Channel bonding
Dial Return
Satellite Return
Wireless
31. 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
Fading
Satellite Return
Fixed Wireless
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
DSSS (Direct-Sequence Spread Spectrum)
iwconfig
Reflection
FHSS (Frequency Hopping Spread Spectrum)
33. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
Bluetooth Special Interest Group (SIG)
Range
iwconfig
Multipath signals
34. 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.
Dial Return
Active Scanning
Reassociation
ESS (Extended Service Set Identifier)
35. A destination node must issue an acknowledgment for every packet that is received intact.
Infrastructure WLAN
Multipath signals
Stations
802.11 transmission requirement that contributes to its inefficiency
36. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
A beacon frame
Fixed Wireless
5 GHz
Association
37. In IEEE terminology - the identifier for a BSS (basic service set)
Beacon Frame
Narrowband
BSSID (Basic Service Set Identifier)
Wireless
38. The process a wireless station undergoes to find an access point.
Scattering
Radiation pattern
Passive Scanning
canning
39. 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
Hot Spot
GEO (Geosynchronous Orbit or Geostationary Orbit)
Frame aggregation - Channel bonding
40. 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.
WLAN
GEO (Geosynchronous Orbit or Geostationary Orbit)
Omnidirectional Antenna
Wireless
41. ISM Range - Radio frequency band that may experience home appliance interference - Unregulated radio frequency band.
Active Scanning
B. 2.4 GHz
2.4 GHz
LOS (Line of Sight)
42. 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.
Geosynchronous orbit
Passive Scanning
Access Point
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
43. 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.
2.4 GHz
Access Point
Reflection
Association
44. 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
5 GHz
Fixed Wireless
A beacon frame
BSSID (Basic Service Set Identifier)
45. 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.
ESS (Extended Service Set Identifier)
Passive Scanning
A beacon frame
Directional Antenna
46. Omnidirectional
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Downlink
Range
DSSS (Direct-Sequence Spread Spectrum)
47. 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
Multipath signals
LEO (Low Earth Orbiting)
Roaming
Channel Bonding
48. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.
FHSS (Frequency Hopping Spread Spectrum)
Roaming
5 GHz
Multipath signals
49. 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.
WLAN
A beacon frame
SSID (Service Set Identifier)
5 GHz Band
50. 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.
Access Point
Ad Hoc
Range
Active Scanning