General Wi-Fi MCQs

1. The most common way to secure a wireless connection is to use:

2. IEEE 802.11af allows WLAN operation within what two ITU-designated radio wave frequency ranges?

3. In many cases municipal wifi networks are being created with a combination of:

4. Wifi works on radio band:

5. What does the W in WLAN stand for?

6. Which of the following may cause transmission interference with a wireless sign?

7. Which of the following devices would definitely not use WiFi?

8. Which frequencies does Wifi use to transmit data?

9. What does the term WLAN refer to?

10. True or False? The more users that share an access point, the slower a wireless network can become.

11. A specific location in which an end user can access the Internet wirelessly:

12. Wifi is used to connect devices to:

13. What is the term assocaited with DHCP that allows your computer to acces other computers outside your network?

14. What does AP stand for?

15. By using this type of wireless connection, you computer is secure from prying eyes:

16. Which of the following can redirect an Internet signal to multiple end users?

17. When you connect to a wireless network, you are assigned an IP address. What is an IP address?

18. WPA2 increased the security of WPA from 128 bits to how many bits?

19. Wifi was built to move:

20. True or false? Wimax offers larger coverage areas with greater bandwidth and speeds compared to wifi.

21. The Wired Equivalent Privacy (WEP) security algorithm was first introduced in 1997 by what professional association?

22. An IPaddress gets assigned to a computer by a wireless router. what performs this?

23. What is the most basic difference between a WLAN and an Ethernet LAN?

24. The radio waves of a WLAN are generated by which device?

25. Which of the following ISM bands is likely to be the most heavily populated?

26. When trying to connect to a wireless network, at times it's name is hidden. What is the technical term for this wireless name?

27. The wavelength of an electromagnetic signal is inversely proportional to what other feature of that signal?

28. Which of the following allows your computer to send and receive wireless signals to and from the internet?

29. What does DNS stand for?

30. Which one is the most secure?

31. Some wireless routers provide QoS to help prioritize traffic. What does QoS stand for?

32. WPA stands for:

33. The diameter of a hotspot area is about:

34. What do you call the name of a network that is broadcast by a router?

35. Wireless networks can operate on one of which two modes?

36. Wireless keys are:

37. Which of the following can be effectively used to restrict unnecessary traffic on your wireless network?

38. What is the unique identifier tied to your wireless or wired ethernet card called?

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

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

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

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

43. IEEE 802.11i is also referred to as:

44. What do the letters DSSS stand for?

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

46. 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?

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

48. 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?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

65. Wifi does not support roaming? True or False

66. Wimax works on radio band:

67. What does EIRP stand for?

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

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

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

71. Wifi uses which kind of multiplexing:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

89. Full form of IEEE?

90. Full form of BSA?

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

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

93. Full form of WEP?

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

95. 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?

96. Correct sequence of 4 way handshake?

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

98. Full form of SSID?

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

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

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

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

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

104. Full form of WPA?

105. Which one is true of SSID?

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

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

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

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

110. Maximum speed of IEEE 802.11a?

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

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

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

114. Maximum obstruction allowable in the Fresnel zone?

115. Which are the categories of encoding for WLAN?

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

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

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

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

120. Types of RF connectors?

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

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

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

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

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

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

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

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

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

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

131. Radio spectrum used by 802.11a?

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

133. Full form of Wi-Fi?

134. Maximum speed of IEEE 802.11g?

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

136. Which are major WLAN security standards?

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

138. Radio spectrum used by 802.11g?