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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 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.






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






3. 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






4. 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.






5. 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.






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






7. 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






8. 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






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






10. A. CSMA/CA






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






12. 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






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






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






15. 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






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






17. 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.






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






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






20. 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.






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






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






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






24. 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






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






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






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






28. 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.






29. 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.






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






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






32. 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.






33. Omnidirectional






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






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






36. An access point that provides routing functions.






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






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






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






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






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






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






43. 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.






44. 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.






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






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






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






48. 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






49. 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.






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