Wi-Fi MCQ Questions Answers

1. Radio spectrum used by 802.11g?

2. Which device is used to decrease the strength of the RF signal intentionally?

3. Which are major WLAN security standards?

4. Maximum dwell time that can be set for FHSS systems according to FCC specification?

5. Maximum speed of IEEE 802.11g?

6. Full form of Wi-Fi?

7. Which Service Set in the infrastructure mode uses a single AP to create the wireless LAN?

8. Radio spectrum used by 802.11a?

9. Which one allows roaming and a larger coverage area?

10. Which type of modulation is used by 802.11 products when they transmit data using FHSS?

11. Which calculation measures the WLAN signal as compared to the undesirable signals in the same space?

12. Standard hopping rate (per second) for HomeRF?

13. Which spread spectrum technology is more likely to be affected by narrow band interference?

14. Maximum speed of data transfer that can be achieved by 802.11n?

15. Antennas best suited for indoor environments such as university campuses?

16. Which types of WLAN client devices can you install on your desktop?

17. The reflection of the main RF signal caused by many objects in the transmission is known as

18. Ad hoc mode cannot be used in a Basic Service Set.

19. Types of RF connectors?

20. Types of tools that can be used to reduce attacks on a WLAN?

21. Types of links you create when you create site-to-site links?

22. Maximum number of APs supported by DSSS systems in a co-located environment?

23. Which one is used to provide intentional passive gain in wireless networks that are using RF signals?

24. Which are the categories of encoding for WLAN?

25. Maximum obstruction allowable in the Fresnel zone?

26. Primary roles that WLANs play in today's enterprise organizations?

27. In radio links, the bulge of the earth needs to be considered only when the distance between two locations is more than ______.

28. Which Ethernet cable is used to connect a WLAN AP with a LAN switch?

29. Maximum speed of IEEE 802.11a?

30. Which WEP authentication method specified by IEEE 802.11 standard is simpler and more secure?

31. Which one can be used in the AAA security services?

32. Which is true when an access point is operating in the DCF mode?

33. Which class of encoding for WLAN is used by 802.11a and 802.11g?

34. Which one is true of SSID?

35. Full form of WPA?

36. Which one can interfere with the 802.1b compliant Access Point?

37. Which antenna is ideal for long distance and point-to-point wireless links?

38. Which one regulates the power output levels of radio frequency devices that use the license-free bands?

39. What is the duration/ID value (in microseconds) if the data frame is a multicast address?

40. Wi-Fi standard and its variations collectively known as?

41. Full form of SSID?

42. Which encryption methods are used in Wi-Fi?

43. Correct sequence of 4 way handshake?

44. Which formulas can be used to calculate the wavelength in meters when the frequency is known where 'w' is the wavelength to be calculated and 'f' is the frequency in hertz?

45. Other names for the Wi-Fi broadcast device?

46. Full form of WEP?

47. Which one is used by DSSS and FHSS for time synchronization and channel information?

48. Which frequency band is specified for indoor-only usage?

49. Full form of BSA?

50. Full form of IEEE?

51. Which one is a more secure method for data transfer using encryption techniques?

52. In which mode wireless devices cannot communicate directly with each other instead they use AP to forward frames to each other?

53. In which mode does one wireless device communicate with another wireless device directly without using AP?

54. How many U-NII license-free bands exist in the 5 GHz frequency range?

55. A decrease in RF signal strength is known as _____.

56. The WLAN devices can send data successfully if the SNR is low.

57. How many power modes are specified for 802.11b standard?

58. How many non-overlapping channels does IEEE 802.11a standard support?

59. At which layer of the OSI model do most of the wireless APs operate?

60. How many hertz is one Gigahertz (GHz) equal to?

61. Which of the following modulation is used by Wifi?

62. Quality of Service (QoS) capabilities are incorporated in Wifi with the adoption of:

63. What is the fixed bandwidth defined by Wifi standard for 802.11b?

64. To prevent annoucement of the existence of your wireless network, you should disable identifier:

65. IEEE 802.11 includes the specifications for WLAN technologies that make use of radio waves and what other kind of electromagnetic radiation?

66. Which of the following keys is commonly used on wireless computer networks to increase their security?

67. What is the fixed bandwidth defined by Wifi standard for 802.11g?

68. Wifi uses which kind of multiplexing:

69. Which of the following frequencies would have the greatest penetration of potential sources of interferences such as walls or trees?

70. Which of the following is not an organization that influences the standards used for WLANs today?

71. What is the name of a newer trend in which large mesh networks of wifi are provided over a large geographical area?

72. What does EIRP stand for?

73. Wimax works on radio band:

74. Wifi does not support roaming? True or False

75. Which of the following is not an unlicensed ISM band?

76. Which of the following is not a common modulation method used in wireless communication?

77. An 802.11 frame may contain up to how many address fields?

78. Which of the following is not one of the three main tools used to decrease the security risks that accompany a WLAN?

79. Which of the following is not a feature WPA2 security?

80. What is the name given to individuals who search for unsecure networks in the hope of gaining free access to the internet?

81. What is it called when some drives around looking for available provate access points?

82. The 2.4-GHz band is broken down into how many channels?

83. A wireless network card operates at roughly what rate of power?

84. A typical off-the-shelf router (made by Netgear, Linksys, etc.) transmits with a power of roughly how many milliwatts?

85. IEEE's 802.11 provides specifications for which two facets of WLAN communication?

86. Which of the following refers to unauthorized tapping into another's wifi connection with a public utility?

87. True or False? A WPAN will generally have a larger area of coverage than a WLAN.

88. Which of the following would an outdoor WLAN most likely require?

89. Which of the following security systems was marked as "deprecated," and therefore a security risk, in 2004?

90. A decibel (dB) is a ratio determined by what two power quantities?

91. One technique used in attempts to crack a cipher or authentification mechanism is to try hundreds, maybe millions of possible passwords or phrases. What is this technique called?

92. IEEE 802.11 wireless LAN use a media access control protocol called:

93. If a device that is rated at 40 milliwatts (mW) is added to a connector whose resistance reduces the power by 3 decibels (-3dB), what is most likely to be the device's power rating?

94. IEEE 802.1X security protocol uses which three components?

95. What do the letters DSSS stand for?

96. IEEE 802.11i is also referred to as:

97. Of the following choices, which 802.11 offers the highest potential speeds?

98. The strength of a Wi-Fi wireless radio signal is measured using what standard unit?

99. Antenna gain is characterized by what unit of measurement?

100. Which of the following is not one of the layers of the OSI networking model?