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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 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.
Channel Bonding
In the 802.11 standard - IEEE specifies what type of access method?
Transponder
Site Survey
2. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
Wireless Spectrum
Directional Antenna
Channel Bonding
Bluetooth Special Interest Group (SIG)
3. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
5 GHz Band
Beacon Frame
Passive Scanning
Bluetooth Special Interest Group (SIG)
4. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
ESS (Extended Service Set Identifier)
Probe
Reassociation
Downlink
5. ISM Range - Radio frequency band that may experience home appliance interference - Unregulated radio frequency band.
DSSS (Direct-Sequence Spread Spectrum)
2.4 GHz
Stations
Reassociation
6. A. CSMA/CA
Wireless
In the 802.11 standard - IEEE specifies what type of access method?
Bluetooth
Radiation Pattern
7. 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.
WLAN
Multipath signals
Mobile Wireless
A beacon frame
8. 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
iwconfig
Channel Bonding
RTS/CTS (Request to Send/Clear to Send)
Scattering
9. 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
PAN (Personal Area Network)
Wireless Broadband
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
MIMO (Multiple Input-Multiple Output)
10. A connection from an orbiting satellite to an Earth -based receiver.
Downlink
Omnidirectional Antenna
Beacon Frame
Radiation pattern
11. 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?
Multipath signals
Bluetooth Special Interest Group (SIG)
Channel Bonding
12. 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
Omnidirectional Antenna
Mobile Wireless
Diffraction
13. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
Fading
Satellite Return
MEO (Medium Earth Orbiting)
iwconfig
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.
FHSS (Frequency Hopping Spread Spectrum)
2.4 GHz Band
PAN (Personal Area Network)
Dial Return
15. 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)
SSID (Service Set Identifier)
Diffraction
Beacon Frame
Bluetooth
16. An end node on a network; used most often in the context of wireless networks.
Access Point
Geosynchronous orbit
5 GHz
Stations
17. Regulated radio frequency band - 1/3rd range of 802.11b or g - Usually found in corporate environments.
Stations
5 GHz
Bluetooth
Multipath signals
18. 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
Omnidirectional Antenna
WLAN
Infrastructure WLAN
19. A unique character string used to identify an access point on an 802.11 network.
Radiation Pattern
Omnidirectional Antenna
Mobile Wireless
SSID (Service Set Identifier)
20. 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
Probe
Downlink
Range
21. 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.
GEO (Geosynchronous Orbit or Geostationary Orbit)
ESS (Extended Service Set Identifier)
Active Scanning
RTS/CTS (Request to Send/Clear to Send)
22. 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.
RTS/CTS (Request to Send/Clear to Send)
SSID (Service Set Identifier)
Roaming
23. In _____ - a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.
Downlink
A beacon frame
Wireless Spectrum
Narrowband
24. A type of WLAN in which stations communicate with an access point and not directly with each other.
Infrastructure WLAN
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
Geosynchronous orbit
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
25. The use of multiple frequencies to transmit a signal. (because the signal is spread out over the wireless spectrum)
Radiation pattern
2.4 GHz
Spread Spectrum
Probe
26. 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
FHSS (Frequency Hopping Spread Spectrum)
Probe
Reflection
27. An access point that provides routing functions.
GEO (Geosynchronous Orbit or Geostationary Orbit)
Wireless Router
In the 802.11 standard - IEEE specifies what type of access method?
5 GHz
28. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
DSSS (Direct-Sequence Spread Spectrum)
B. 2.4 GHz
Dial Return
Ad Hoc
29. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
Site Survey
Access Point
A beacon frame
WLAN
30. The signals made of electromagnetic energy that travel through the atmosphere.
Established the credentials the wireless interface will use to communicate securely with the access point
B. 2.4 GHz
Wireless
LOS (Line of Sight)
31. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
Radiation pattern
Bluetooth Special Interest Group (SIG)
2.4 GHz Band
Range
32. 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
WLAN
Spread Spectrum
Fading
Bluetooth
33. 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
ESS (Extended Service Set Identifier)
Wireless Router
MEO (Medium Earth Orbiting)
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.
To transmit and receive signals to and from multiple nodes in a three-storey house - what type of antenna should an access point use?
Range
Transponder
Geosynchronous orbit
35. Which type of satellites is used to provide satellite Internet access?
Radiation pattern
Established the credentials the wireless interface will use to communicate securely with the access point
Geosynchronous orbit
DSSS (Direct-Sequence Spread Spectrum)
36. A destination node must issue an acknowledgment for every packet that is received intact.
ESSID (Extended Service Set Identifier)
Narrowband
802.11 transmission requirement that contributes to its inefficiency
Satellite Return
37. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
GEO (Geosynchronous Orbit or Geostationary Orbit)
A beacon frame
FHSS (Frequency Hopping Spread Spectrum)
In the 802.11 standard - IEEE specifies what type of access method?
38. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
5 GHz
Scattering
Reassociation
B. 2.4 GHz
39. 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
Radiation Pattern
Transponder
Wireless Broadband
40. 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
Wireless Spectrum
Multipath signals
In the 802.11 standard - IEEE specifies what type of access method?
41. 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.
Frame aggregation - Channel bonding
iwconfig
Transponder
Association
42. An access point that provides routing functions and is used as a gateway.
Established the credentials the wireless interface will use to communicate securely with the access point
Diffraction
Reflection
Wireless Gateway
43. 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.
Radiation Pattern
MIMO (Multiple Input-Multiple Output)
2.4 GHz Band
RTS/CTS (Request to Send/Clear to Send)
44. Which techniques help to reduce overhead in 802.11n wireless transmission?
Fixed Wireless
Frame aggregation - Channel bonding
Directional Antenna
In the 802.11 standard - IEEE specifies what type of access method?
45. This type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.
LOS (Line of Sight)
Reflection
Channel Bonding
Wireless Spectrum
46. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?
Established the credentials the wireless interface will use to communicate securely with the access point
DSSS (Direct-Sequence Spread Spectrum)
Wireless
PAN (Personal Area Network)
47. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
Active Scanning
A beacon frame
Radiation Pattern
Ad Hoc
48. A special identifier shared by BSSs that belong to the same ESS.
ESSID (Extended Service Set Identifier)
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
BSSID (Basic Service Set Identifier)
Geosynchronous orbit
49. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
Ad Hoc
iwconfig
Directional Antenna
Mobile Wireless
50. 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.
Fading
B. 2.4 GHz
Beacon Frame
Omnidirectional Antenna