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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 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.






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






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






4. 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.






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






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






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






8. 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






9. 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.






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






11. 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






12. 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.






13. 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.






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






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






16. 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.






17. 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






18. 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.






19. A. CSMA/CA






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






21. 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






22. 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)






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






24. 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.






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






26. 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.






27. 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.






28. 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.






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






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






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






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






33. 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






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






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






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






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






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






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






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






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






42. 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






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






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






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 - the process in which a station listens to several channels within a frequency range for a beacon issued by an access point.






47. 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.






48. Omnidirectional






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






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