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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. 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.






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






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






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






5. Regulated radio frequency band - 1/3rd range of 802.11b or g - Usually found in corporate environments.






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






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






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






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






10. 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.






11. 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.






12. A. CSMA/CA






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






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






15. 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






16. 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






17. An access point that provides routing functions.






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






19. 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






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






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






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






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






24. 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.






25. Omnidirectional






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






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






28. 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






29. 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.






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






31. 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.






32. A command-line utility for viewing and setting wireless interface parameters on Linux and UNIX workstations.






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






34. 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)






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






36. 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.






37. 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.






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






39. 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.






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






41. Because of reflection - diffraction - and scattering - wireless signals follow a number of different paths to their destination.






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






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






44. 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






45. 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.






46. In the context of wireless networking - a frame issued by an access point to alert other nodes of its existence.






47. The process a wireless station undergoes to find an access point.






48. 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






49. 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






50. 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