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1. What are some results of multipath interference?

Corruption of data

Lower data throughput

Layer 2 retransmissions

All of the above

Question 1 of 50

2. A standard measurement of frequency is called decibel

True

False

Question 2 of 50

3. Which of the following is caused by partial blockage of the RF signal, such as a building that sits between a transmitting radio and a receiver?

Amplification

Reflection

Diffraction

Attenuation

Question 3 of 50

4. Which behaviour can be described as an RF signal reflecting in multiple directions when encountering an uneven surface?

Diffraction

Reflection

Attenuation

Scattering

Question 4 of 50

5. There is an inverse relationship between which of the following?

Frequency and phase

Frequency and wavelength

Amplitude and phase

Frequency and amplitude

Question 5 of 50

6. Which of the following is a measure of the strongest signal that is radiated from an antenna?

EIRP

SNR

RSSI

None of the above

Question 6 of 50

7. Which of the following is the difference in decibels between the received signal and the background noise?

SNR

EIRP

RSSI

Fresnel zone

Question 7 of 50

8. Which of the following can be characterized simply as the signal’s height, strength, or power?

Amplitude

Frequency

Wavelength

None of the above

Question 8 of 50

9. RF loss is caused by which of the following factors?

Reflection

Absorption

Attenuation

All of the above

Question 9 of 50

10. Which of the following are the effects of voltage standing wave ratio?

SNR

Return loss

Scattering

Decreased signal amplitude

Question 10 of 50

11. As the transmitted signal propagates, it's power level increases at a rate inversely proportional to the distance travelled

True

False

Question 11 of 50

12. Which of the following is the background level of radio energy on a specific channel?

Noise floor

SNR

Reflection

FSPL

Question 12 of 50

13. If a radio receives a signal of –70 dBm and the noise floor is measured at –85 dBm, what would be the SNR value?

20 dB

15 dB

155 dB

None of the above

Question 13 of 50

14. The 802.11 RSSI measurement parameter can have a value from

0 to 128

0 to 10

0 to 255

1 to 256

Question 14 of 50

15. If your access point is configured to transmit at 36 mW and the antenna is rated for 3 dBi of passive gain, the amount of power that will radiate out of the antenna (EIRP) will be?

360 mW

72 mW

18 mW

3.6 mW

Question 15 of 50

16. Passive gain uses extra amplification and does not rely on the direction of the antenna for increased RF energy

True

False

Question 16 of 50

17. Which of the following system consists of multiple radio chains, with each radio chain having its own antenna?

SISO

MIMO

Lightning arrestors

FIFO

Question 17 of 50

18. Which of the following refers to the polar chart of an antenna as viewed straight from the side to see the areas of coverage?

E-plane

Elevation chart

Vertical view

All of the above

Question 18 of 50

19. What is the definition of the vertical beamwidth of an antenna?

The distance between the two half-power points on the horizontal axis, measured in degrees

An imaginary, elongated area that surrounds the path of the visual LOS between two point-to-point antennas

The distance between the two points on the vertical axis where the signal decreases by half

The distance between the two half-power points on the vertical axis, measured in degrees

Question 19 of 50

20. Which antennas are semi-directional?

Patch

Grid

Panel

Yagi

Question 20 of 50

21. One of the disadvantages of Omni-directional antennas is that they typically have a shorter range due to the signal being spread so broadly

True

False

Question 21 of 50

22. Which of the following determine the size of the Fresnel zone?

Distance

Phase

Frequency

SNR

Question 22 of 50

23. Which organization created the 802.11 standard and subsequent WLAN amendments?

IETF

IEEE

Local regulatory domain authorities

Wi-Fi Alliance

Question 23 of 50

24. Which organization examines the different vendors equipment and make sure that they would inter-operate with other vendor products?

IEEE

Wi-Fi Alliance

FCC

IETF

Question 24 of 50

25. The original 802.11 standard defines which of the following three Physical layer specifications?

HR-DSSS

DSSS

FHSS

Question 25 of 50

26. Which of the following methods of authentication are defined in the original 802.11 standard?

WPA2

Open System Authentication

TKIP

Shared Key Authentication

Question 26 of 50

27. QAM modulation is a hybrid of which of the following modulation techniques?

Frequency

Phase

Amplitude

Hopping

Question 27 of 50

28. In QPSK, two bits are modulated at once allowing the signal to carry twice as much information as compared to BPSK

True

False

Question 28 of 50

29. Dynamic frequency selection is defined for which of the following reasons?

Specify the transmit power of any or all clients that are associated with an access point

Detecting radar in current and other channels

Discontinuing operations after detecting radar

To improve client's device battery life

Question 29 of 50

30. Which of the following is a logical name used to identify an 802.11 wireless network?

SSID

BSSID

ESS

IBSS

Question 30 of 50

31. Which of the following data unit consists of MAC header, frame body and FCS or frame check sequence field?

MSDU

MPDU

PSDU

PPDU

Question 31 of 50

32. In passive scanning, the client station transmits management frames known as probe requests to search for an access point

True

False

Question 32 of 50

33. Which of the following means that the client station has established layer 2 connectivity with the AP and joined the BSS?

Association

Authentication

Encryption

Roaming

Question 33 of 50

34. Which of the following are the components of distributed coordinated function?

Interframe spaces

Backoff timer

Frame transmission

All of the above

Question 34 of 50

35. Match the interframe space with it's description

Short interframe space	Used by QoS stations Unselect Used with frame corruption Unselect Second highest priority Unselect Lowest priority Unselect
DCF interframe space	Used by QoS stations Unselect Used with frame corruption Unselect Second highest priority Unselect Lowest priority Unselect
Arbitration interframe space	Used by QoS stations Unselect Used with frame corruption Unselect Second highest priority Unselect Lowest priority Unselect
Extended interframe space	Used by QoS stations Unselect Used with frame corruption Unselect Second highest priority Unselect Lowest priority Unselect

Question 35 of 50

36. Which of the following PoE standard is known as PoE+ and provides 25.5 watts?

802.3af

802.3at

802.3bt

802.3ax

Question 36 of 50

37. Which term is used to define the total power required of the powered device or the total power available in power-source equipment?

Power budget

Port density

Midspan PSE

Endpoint PSE

Question 37 of 50

38. Clients on a different channel within hearing range can cause co-channel interference?

True

False

Question 38 of 50

39. Match the following terms with the correct description

Control Plane	Includes routing and switching protocol Unselect Devices management and monitoring Unselect Focused on user data transfer Unselect
Management Plane	Includes routing and switching protocol Unselect Devices management and monitoring Unselect Focused on user data transfer Unselect
Data Plane	Includes routing and switching protocol Unselect Devices management and monitoring Unselect Focused on user data transfer Unselect

Question 39 of 50

40. Which of the following are the main components of the 802.1X authorization framework?

Authenticator

Authorizer

Authentication server

Supplicant

Question 40 of 50

41. Simultaneous Authentication of Equals or SAE replaces PSK authentication in WPA3

True

False

Question 41 of 50

42. Identify the authentication and encryption solutions that are defined by WPA3

802.1X EAP authentication

GCMP-256 encryption

PSK authentication

Dynamic WEP encryption

Question 42 of 50

43. Which of the following offers encrypted communication for Wi-Fi networks without passwords when using WPA3?

SAE

OWE

EAP

None of the above

Question 43 of 50

44. Which of the following tools can measure the amplitude and frequency space of electromagnetic signals?

Spectrum analyzer

Protocol analyzer

GPS

All of the above

Question 44 of 50

45. Protocol analyzers are useful for the following:

Capture and decode frames and packets

Monitor what protocols are sent over the network

View signal strength in coverage areas

All of the above

Question 45 of 50

46. How layer 2 retransmissions affect the wireless LAN?

Increased MAC overhead

Decreased throughput

Increased latency

All of the above

Question 46 of 50

47. The cyclic redundancy check or CRC will pass even if a collision occurs or any portion of a unicast frame is corrupted

True

False

Question 47 of 50

48. Which of the following refers to the policy of allowing employees to bring personally owned devices, such as smartphones, tablets and to their workplace?

MDM

DMZ

BYOD

GRE

Question 48 of 50

49. Spectrum analyzers are used for which of the following?

Site surveys

Security auditing and analysis

Locating the source of interference

All of the above

Question 49 of 50

50. How many non-overlapping channels are provided by a 2.4 GHz frequency band?

Question 50 of 50

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