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Wireless Networking Vocab

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 type of propagation uses the least amount of energy and results in the reception of the clearest possible signal.






2. 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.






3. What frequency band is used by Bluetooth - 802.11b - and 802.11g?






4. In the context of wireless networking - the process of a station establishing a connection (or associating) with a different access point.






5. An area covered by a wireless access point that provides visitors with wireless services - including Internet access.






6. A connection from an orbiting satellite to an Earth -based receiver.






7. 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






8. 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.






9. The signals made of electromagnetic energy that travel through the atmosphere.






10. In ________________ - a signal jumps between several different frequencies within a band in a synchronization pattern known only to the channel's receiver and transmitter.






11. A group of access points and associated stations (or basic service sets) connected to the same LAN.






12. The relative strength over a three dimensional area of all the electromagnetic energy an antenna sends or receives.






13. Networks that transmit signals through the atmosphere via radio frequency (RF) waves.






14. 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.






15. In 802.11 wireless networking - a type of frame issued by a station during active scanning to find nearby access points.






16. 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.






17. A small (usually home) network composed of personal communications devices.






18. A consortium of companies - including Sony Ericsson - Intel - Nokia - Toshiba - and IBM - that formally banded together in 1998 to refine and standardize Bluetooth technology.






19. An antenna's _______ _______ describes the relative strength over a three-dimensional area of all the electromagnetic energy the antenna sends or receives.






20. 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






21. A. CSMA/CA






22. ISM Range - Radio frequency band that may experience home appliance interference - Unregulated radio frequency band.






23. The geographical area in which signals issued from an antenna or wireless system can be consistently and accurately received.






24. 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






25. 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.






26. 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.






27. In IEEE terminology - the identifier for a BSS (basic service set)






28. Why are the 802.11b and 802.11g wireless transmission technologies more commonly used on business LANs than Bluetooth?






29. 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






30. In _____ - a transmitter concentrates the signal energy at a single frequency or in a very small range of frequencies.






31. 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






32. A special identifier shared by BSSs that belong to the same ESS.






33. In wireless networking - the process that describes a station moving between BSSs without losing connectivity.






34. A type of WLAN in which stations communicate with an access point and not directly with each other.






35. The use of multiple frequencies to transmit a signal. (because the signal is spread out over the wireless spectrum)






36. An access point that provides routing functions and is used as a gateway.






37. A unique character string used to identify an access point on an 802.11 network.






38. 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.






39. On your Linux workstation - you open a terminal window and type at the command prompt iwconfig eth0 key 5c00951b22. What have you done?






40. An end node on a network; used most often in the context of wireless networks.






41. 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






42. 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.






43. An access point that provides routing functions.






44. 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






45. 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.






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.






47. 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.






48. If your wireless stations are configured to perform passive scanning - what do they need from an access point to initiate association?






49. 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.






50. 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.