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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. 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






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






3. 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.






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






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






6. 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.






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






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






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






10. A type of wireless LAN in which stations communicate directly with each other (rather than using an access point)






11. 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.






12. 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.






13. 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.






14. Omnidirectional






15. An access point that provides routing functions.






16. A. CSMA/CA






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






18. 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






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






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






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






22. 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.






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






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






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






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






27. 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.






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






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






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






31. 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.






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






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






34. 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.






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






36. 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.






37. 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






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






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






40. 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






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






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






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






44. 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






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






46. 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.






47. 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.






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






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