1. How many hertz is one Gigahertz (GHz) equal to?
Answers:
• 1,000 hertz
• 1,000,000 hertz
• 1,000,000,000 hertz
• None of the above
2. At which layer of the OSI model do most of the wireless APs operate?
Answers:
• Layer 1
• Layer 2
• Layer 3
• None of the above
3. How many non-overlapping channels does IEEE 802.11a standard support?
Answers:
• 3
• 4
• 12
• 23
4. How many power modes are specified for 802.11b standard?
Answers:
• 2
• 3
• 4
• 5
5. State whether true or false .
The WLAN devices can send data successfully if the SNR is low.
Answers:
• True
• False
6. A decrease in RF signal strength is known as _____.
Answers:
• reflection
• diffraction
• attenuation
• amplification
7. How many U-NII license-free bands exist in the 5 GHz frequency range?
Answers:
• 3
• 4
• 5
• 6
8. In which mode does one wireless device communicate with another wireless device directly without using AP?
Answers:
• Core mode
• Ad hoc mode
• Infrastructure mode
• None of the above
9. In which mode wireless devices cannot communicate directly with each other instead they use AP to forward frames to each other?
Answers:
• Core mode
• Ad hoc mode
• Infrastructure mode
• None of the above
51 NOT Answered Yet Test Questions:
(hold on, will be updated soon)10. Which of the following is a more secure method for data transfer using encryption techniques?
Answers:
• RC4
• WPA
• WEP
• WPA2
11. Which of the following regulates the power output levels of radio frequency devices that use the license-free bands?
Answers:
• IEEE
• IETF
• FCC
• Wi-Fi Alliance
12. Which of the following types of antennas is ideal for long distance and point-to-point wireless links?
Answers:
• Yagi
• Dipole
• Parabolic Dish
• All of the above
13. Which of the following things can interfere with the 802.1b compliant Access Point?
Answers:
• Microwave Ovens
• Baby Monitors
• 2.4 GHz cordless phones
• All of the above
14. What is the full form of WPA?
Answers:
• Wi-Fi Protected Access
• Wireless Protected Authorization
• Wi-Fi Power Amplification
• Wireless Preventive Access
15. Which of the following is/are true of SSID?
Answers:
• It is case sensitive
• Its length is between 2-32 characters
• It cannot be an alphanumeric value
• All of the above
16. Which of the following classes of encoding for WLAN is used by 802.11a and 802.11g?
Answers:
• OFDM
• DSSS
• FHSS
• All of the above
17. Which of the following statements is/are true when an access point is operating in the DCF mode?
Answers:
• No QoS is guaranteed
• Voice and video are not supported
• CSMA/CA is used for collision avoidance
• All of the above
18. Which of the following can be used in the AAA security services?
Answers:
• Passwords
• Digital Certificates
• IP address filtering
• Tunneling
19. What is the full form of IEEE?
Answers:
• International Education for Electronics Engineers
• Internet Enabled Electronics Encryption
• Institute of Electrical and Electronics Engineers
• International Encryption for Electronics E-commerce
20. Which one of the following WEP authentication methods specified by IEEE 802.11 standard is simpler and more secure?
Answers:
• Open System Authentication
• Shared Key Authentication
21. What is the maximum speed of IEEE 802.11a?
Answers:
• Up to 11 Mbps
• Up to 22 Mbps
• Up to 54 Mbps
• Up to 140 Mbps
22. Which type of Ethernet cable is used to connect a WLAN AP with a LAN switch?
Answers:
• Crossover cable
• Rollover cable
• Straight-through cable
• All of the above
23. What is the full form of BSA?
Answers:
• Basic Service Authentication
• Basic Service Association
• Basic Service Area
• Basic Secure Authentication
24. In radio links, the bulge of the earth needs to be considered only when the distance between two locations is more than ______.
Answers:
• 5 miles
• 7 miles
• 10 miles
• 15 miles
25. Which of the following frequency bands is specified for indoor-only usage?
Answers:
• 5.725 - 5.825 GHz
• 5.470 - 5.725 GHz
• 5.15 - 5.35 GHz
• 5.25 - 5.35 GHz
26. Which of the following are the primary roles that WLANs play in today's enterprise organizations?
Answers:
• Access role
• Core role
• Management role
• Distribution role
27. What is the maximum obstruction allowable in the Fresnel zone?
Answers:
• 20 %
• 30 %
• 40 %
• 50 %
28. Which of the following is/are the category/ categories of encoding for WLAN?
Answers:
• OFDM
• DSSS
• FHSS
• All of the above
29. Which of the following is used to provide intentional passive gain in wireless networks that are using RF signals?
Answers:
• Amplifier
• Antenna
• Modulator
• Attenuator
30. What is the maximum number of APs supported by DSSS systems in a co-located environment?
Answers:
• 2
• 3
• 4
• Unlimited
31. Which of the following types of links can you create when you create site-to-site links?
Answers:
• Point-to-Point Links
• Multipoint-to-Multipoint Links
• Point-to-Multipoint Links
32. Which of the following types of tools can be used to reduce attacks on a WLAN?
Answers:
• Intrusion related tools
• Encryption
• Mutual Authentication using secret password
• All of the above
33. Which of the following are types of RF connectors?
Answers:
• BNC
• SMA
• TNC
• All of the above
34. State whether true or false.
Ad hoc mode cannot be used in a Basic Service Set.
Answers:
• True
• False
35. Which of the following is used by DSSS and FHSS for time synchronization and channel information?
Answers:
• Acknowledgment Frames
• Broadcast Frames
• Beacon Frames
• None of the above
36. What is the full form of WEP?
Answers:
• Wired Equivalent Privacy
• Wireless Encryption Protocol
• Wi-Fi Enabled Place
• Wireless Enabled Protection
37. The reflection of the main RF signal caused by many objects in the transmission is known as
Answers:
• Signal Attenuation
• Signal Distortion
• Multipath
• All of the above
38. Which of the following types of WLAN client devices can you install on your desktop?
Answers:
• CardBus based
• USB based
• PCI based
• All of the above
39. Which type of antennas are best suited for indoor environments such as university campuses?
Answers:
• Semi Directional antennas
• Highly Directional antennas
• Sectorized antennas
• All of the above
40. What is the maximum speed of data transfer that can be achieved by 802.11n?
Answers:
• 11 Mbps
• 54 Mbps
• 128 Mbps
• 600 Mbps
41. Which of the following spread spectrum technologies is more likely to be affected by narrow band interference?
Answers:
• DSSS
• FHSS
42. What is the standard hopping rate (per second) for HomeRF?
Answers:
• 50 hops
• 70 hops
• 128 hops
• None of the above
43. Which of the following calculations measures the WLAN signal as compared to the undesirable signals in the same space?
Answers:
• Reflection
• Amplification
• Signal-to-Noise Ratio (SNR)
• None of the above
44. What are the other names for the Wi-Fi broadcast device?
Answers:
• Switch
• Access Point
• Router
• Hotspot
45. Which type of modulation is used by 802.11 products when they transmit data using FHSS?
Answers:
• BPSK
• QPSK
• GFSK
• None of the above
46. Which of the following allows roaming and a larger coverage area?
Answers:
• Independent Basic Service Set
• Extended Service Set
• Basic Service Set
• All of the above
47. What is the radio spectrum used by 802.11a?
Answers:
• 2.4 GHz
• 5 GHz
• 3.7 GHz
• 11 GHz
48. Which of the following 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?
Answers:
• w = 299,792,458 / f
• w = 299,792,458 + f
• w = 299,792,548 / f
• w = 299,792,548 - f
49. Which of the following is the correct sequence of 4 way handshake?
Answers:
• Acknowledgement packet, Request to send, Clear to send, Data
• Acknowledgement packet, Data, Request to send, Clear to send
• Clear to send, Data, Acknowledgement packet, Request to send
• Request to send, Clear to send, Data, Acknowledgement packet
50. Which of the following encryption methods are used in Wi-Fi?
Answers:
• RC4
• DES
• AES
• All of the above
