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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. 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.
2.4 GHz
Scattering
Wireless
Multipath signals
2. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?
Established the credentials the wireless interface will use to communicate securely with the access point
B. 2.4 GHz
Roaming
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
3. A small (usually home) network composed of personal communications devices.
Association
Mobile Wireless
Radiation Pattern
PAN (Personal Area Network)
4. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?
Hot Spot
Wireless Router
A beacon frame
Transponder
5. 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
Stations
RTS/CTS (Request to Send/Clear to Send)
Established the credentials the wireless interface will use to communicate securely with the access point
6. 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
Ad Hoc
MEO (Medium Earth Orbiting)
Geosynchronous orbit
Passive Scanning
7. 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
Scattering
Satellite Return
5 GHz
Multipath signals
8. Which techniques help to reduce overhead in 802.11n wireless transmission?
Frame aggregation - Channel bonding
Omnidirectional Antenna
SSID (Service Set Identifier)
Probe
9. 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
FHSS (Frequency Hopping Spread Spectrum)
Mobile Wireless
MIMO (Multiple Input-Multiple Output)
10. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.
Ad Hoc
Fixed Wireless
iwconfig
Roaming
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.
Bluetooth
Infrastructure WLAN
Wireless Broadband
Channel Bonding
12. 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)
Diffraction
RTS/CTS (Request to Send/Clear to Send)
5 GHz
Narrowband
13. 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
Fading
Scattering
MIMO (Multiple Input-Multiple Output)
Roaming
14. 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.
Multipath signals
GEO (Geosynchronous Orbit or Geostationary Orbit)
Mobile Wireless
BSSID (Basic Service Set Identifier)
15. 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
Stations
Range
A beacon frame
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
16. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.
Roaming
2.4 GHz
iwconfig
Hot Spot
17. An access point that provides routing functions.
GEO (Geosynchronous Orbit or Geostationary Orbit)
MEO (Medium Earth Orbiting)
Wireless Router
LOS (Line of Sight)
18. A connection from an orbiting satellite to an Earth -based receiver.
Directional Antenna
802.11 transmission requirement that contributes to its inefficiency
Wireless Broadband
Downlink
19. 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.
Association
2.4 GHz Band
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
20. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.
Omnidirectional Antenna
Probe
MEO (Medium Earth Orbiting)
Multipath signals
21. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.
Passive Scanning
Reassociation
Downlink
Narrowband
22. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.
Radiation Pattern
WLAN
PAN (Personal Area Network)
Hot Spot
23. ISM Range - Radio frequency band that may experience home appliance interference - Unregulated radio frequency band.
Ad Hoc
2.4 GHz
Hot Spot
PAN (Personal Area Network)
24. What frequency band is used by Bluetooth - 802.11b - and 802.11g?
5 GHz
Diffraction
B. 2.4 GHz
Hot Spot
25. 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.
2.4 GHz Band
Stations
Passive Scanning
Wireless Gateway
26. 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
GEO (Geosynchronous Orbit or Geostationary Orbit)
Bluetooth
LEO (Low Earth Orbiting)
WLAN
27. 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
Passive Scanning
2.4 GHz
Association
Reflection
28. The signals made of electromagnetic energy that travel through the atmosphere.
Wireless Gateway
MEO (Medium Earth Orbiting)
Wireless
canning
29. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.
Association
Stations
Omnidirectional Antenna
Radiation Pattern
30. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)
LEO (Low Earth Orbiting)
Ad Hoc
Bluetooth
FHSS (Frequency Hopping Spread Spectrum)
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.
A beacon frame
DSSS (Direct-Sequence Spread Spectrum)
5 GHz
ESS (Extended Service Set Identifier)
32. An end node on a network; used most often in the context of wireless networks.
Stations
ESSID (Extended Service Set Identifier)
GEO (Geosynchronous Orbit or Geostationary Orbit)
Wireless Broadband
33. 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
Beacon Frame
B. 2.4 GHz
Wireless Spectrum
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
34. 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.
Established the credentials the wireless interface will use to communicate securely with the access point
5 GHz Band
Fading
Geosynchronous orbit
35. A. CSMA/CA
In the 802.11 standard - IEEE specifies what type of access method?
WLAN
Diffraction
Wireless Gateway
36. 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.
iwconfig
Established the credentials the wireless interface will use to communicate securely with the access point
5 GHz Band
BSSID (Basic Service Set Identifier)
37. Which type of satellites is used to provide satellite Internet access?
802.11 transmission requirement that contributes to its inefficiency
Ad Hoc
Geosynchronous orbit
Diffraction
38. A destination node must issue an acknowledgment for every packet that is received intact.
802.11 transmission requirement that contributes to its inefficiency
MIMO (Multiple Input-Multiple Output)
2.4 GHz
Beacon Frame
39. 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.
Reflection
Association
Directional Antenna
Hot Spot
40. 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
Radiation Pattern
In the 802.11 standard - IEEE specifies what type of access method?
Directional Antenna
41. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.
iwconfig
Directional Antenna
Active Scanning
LEO (Low Earth Orbiting)
42. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.
Active Scanning
DSSS (Direct-Sequence Spread Spectrum)
Radiation pattern
Range
43. 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.
Omnidirectional Antenna
Transponder
2.4 GHz Band
802.11 signals travel farther than Bluetooth signals- 802.11 technologies transmit data at higher throughputs than Bluetooth.
44. The process a wireless station undergoes to find an access point.
802.11 transmission requirement that contributes to its inefficiency
canning
Satellite Return
Bluetooth
45. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.
Bluetooth Special Interest Group (SIG)
5 GHz Band
MEO (Medium Earth Orbiting)
Passive Scanning
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?
Fixed Wireless
ESSID (Extended Service Set Identifier)
Channel Bonding
47. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.
Ad Hoc
B. 2.4 GHz
ESSID (Extended Service Set Identifier)
Beacon Frame
48. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.
Probe
Stations
Transponder
Infrastructure WLAN
49. 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.
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
canning
Omnidirectional Antenna
Narrowband
50. A unique character string used to identify an access point on an 802.11 network.
5 GHz
SSID (Service Set Identifier)
Radiation pattern
Transponder