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






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






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






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






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






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






7. 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.






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






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






10. 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.






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






12. An access point that provides routing functions.






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






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






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






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






17. 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.






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. 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. 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.






21. 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






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






23. 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.






24. 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.






25. 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.






26. 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.






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






28. 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.






29. 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






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






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






32. 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.






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






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






35. 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.






36. 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)






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






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






39. A destination node must issue an acknowledgment for every packet that is received intact.






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






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






42. 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.






43. Which techniques help to reduce overhead in 802.11n wireless transmission?






44. 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.






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






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






47. Which type of satellites is used to provide satellite Internet access?






48. 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.






49. A. CSMA/CA






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