Test your basic knowledge |

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 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






2. 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.






3. 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.






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






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






6. 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






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






8. 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.






9. 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.






10. 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






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






12. 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






13. Omnidirectional






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






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






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






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






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






19. 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.






20. An access point that provides routing functions.






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






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






23. 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






24. 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.






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






26. 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






27. 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.






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






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






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






32. 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)






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






34. 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






35. 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.






36. 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.






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






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






39. 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.






40. A. CSMA/CA






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






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






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






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






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






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






47. 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.






48. 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.






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






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