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






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






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






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






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






6. 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






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






8. 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






9. 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.






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






11. 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.






12. 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






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






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






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






16. 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.






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






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






19. 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.






20. 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.






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






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






23. 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.






24. 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)






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






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






27. 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






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






29. An access point that provides routing functions.






30. 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






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






32. 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.






33. 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.






34. 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.






35. 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






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






37. A. CSMA/CA






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






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






40. 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.






41. 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






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






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






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






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






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






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






48. 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.






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






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