Certified Wireless Network Administrator – CWNA Practice Exam Back to exams page. Take the CWNA course here. Uncategorized 1. What are some results of multipath interference?Corruption of dataLower data throughputLayer 2 retransmissionsAll of the aboveQuestion 1 of 50 2. A standard measurement of frequency is called decibelTrueFalseQuestion 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?AmplificationReflectionDiffractionAttenuationQuestion 3 of 50 4. Which behaviour can be described as an RF signal reflecting in multiple directions when encountering an uneven surface?DiffractionReflectionAttenuationScatteringQuestion 4 of 50 5. There is an inverse relationship between which of the following?Frequency and phaseFrequency and wavelengthAmplitude and phaseFrequency and amplitudeQuestion 5 of 50 6. Which of the following is a measure of the strongest signal that is radiated from an antenna?EIRPSNRRSSINone of the aboveQuestion 6 of 50 7. Which of the following is the difference in decibels between the received signal and the background noise?SNREIRPRSSIFresnel zoneQuestion 7 of 50 8. Which of the following can be characterized simply as the signal’s height, strength, or power?AmplitudeFrequencyWavelengthNone of the aboveQuestion 8 of 50 9. RF loss is caused by which of the following factors?ReflectionAbsorptionAttenuationAll of the aboveQuestion 9 of 50 10. Which of the following are the effects of voltage standing wave ratio?SNRReturn lossScatteringDecreased signal amplitudeQuestion 10 of 50 11. As the transmitted signal propagates, it's power level increases at a rate inversely proportional to the distance travelledTrueFalseQuestion 11 of 50 12. Which of the following is the background level of radio energy on a specific channel?Noise floorSNRReflectionFSPLQuestion 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 dB15 dB155 dBNone of the aboveQuestion 13 of 50 14. The 802.11 RSSI measurement parameter can have a value from0 to 1280 to 100 to 2551 to 256Question 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 mW72 mW18 mW3.6 mWQuestion 15 of 50 16. Passive gain uses extra amplification and does not rely on the direction of the antenna for increased RF energyTrueFalseQuestion 16 of 50 17. Which of the following system consists of multiple radio chains, with each radio chain having its own antenna?SISOMIMOLightning arrestorsFIFOQuestion 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-planeElevation chartVertical viewAll of the aboveQuestion 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 degreesAn imaginary, elongated area that surrounds the path of the visual LOS between two point-to-point antennasThe distance between the two points on the vertical axis where the signal decreases by halfThe distance between the two half-power points on the vertical axis, measured in degreesQuestion 19 of 50 20. Which antennas are semi-directional?PatchGridPanelYagiQuestion 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 broadlyTrueFalseQuestion 21 of 50 22. Which of the following determine the size of the Fresnel zone?DistancePhaseFrequencySNRQuestion 22 of 50 23. Which organization created the 802.11 standard and subsequent WLAN amendments?IETFIEEELocal regulatory domain authoritiesWi-Fi AllianceQuestion 23 of 50 24. Which organization examines the different vendors equipment and make sure that they would inter-operate with other vendor products?IEEEWi-Fi AllianceFCCIETFQuestion 24 of 50 25. The original 802.11 standard defines which of the following three Physical layer specifications?HR-DSSSDSSSIRFHSSQuestion 25 of 50 26. Which of the following methods of authentication are defined in the original 802.11 standard?WPA2Open System AuthenticationTKIPShared Key AuthenticationQuestion 26 of 50 27. QAM modulation is a hybrid of which of the following modulation techniques?FrequencyPhaseAmplitudeHoppingQuestion 27 of 50 28. In QPSK, two bits are modulated at once allowing the signal to carry twice as much information as compared to BPSKTrueFalseQuestion 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 pointDetecting radar in current and other channelsDiscontinuing operations after detecting radarTo improve client's device battery lifeQuestion 29 of 50 30. Which of the following is a logical name used to identify an 802.11 wireless network?SSIDBSSIDESSIBSSQuestion 30 of 50 31. Which of the following data unit consists of MAC header, frame body and FCS or frame check sequence field?MSDUMPDUPSDUPPDUQuestion 31 of 50 32. In passive scanning, the client station transmits management frames known as probe requests to search for an access pointTrueFalseQuestion 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?AssociationAuthenticationEncryptionRoamingQuestion 33 of 50 34. Which of the following are the components of distributed coordinated function?Interframe spacesBackoff timerFrame transmission All of the aboveQuestion 34 of 50 35. Match the interframe space with it's descriptionShort interframe space Second highest priorityUnselectUsed with frame corruptionUnselectLowest priorityUnselectUsed by QoS stationsUnselectDCF interframe space Second highest priorityUnselectUsed with frame corruptionUnselectLowest priorityUnselectUsed by QoS stationsUnselectArbitration interframe space Second highest priorityUnselectUsed with frame corruptionUnselectLowest priorityUnselectUsed by QoS stationsUnselectExtended interframe space Second highest priorityUnselectUsed with frame corruptionUnselectLowest priorityUnselectUsed by QoS stationsUnselectQuestion 35 of 50 36. Which of the following PoE standard is known as PoE+ and provides 25.5 watts?802.3af802.3at802.3bt802.3axQuestion 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 budgetPort densityMidspan PSEEndpoint PSEQuestion 37 of 50 38. Clients on a different channel within hearing range can cause co-channel interference?TrueFalseQuestion 38 of 50 39. Match the following terms with the correct descriptionControl Plane Focused on user data transferUnselectDevices management and monitoringUnselectIncludes routing and switching protocolUnselectManagement Plane Focused on user data transferUnselectDevices management and monitoringUnselectIncludes routing and switching protocolUnselectData Plane Focused on user data transferUnselectDevices management and monitoringUnselectIncludes routing and switching protocolUnselectQuestion 39 of 50 40. Which of the following are the main components of the 802.1X authorization framework?AuthenticatorAuthorizerAuthentication serverSupplicantQuestion 40 of 50 41. Simultaneous Authentication of Equals or SAE replaces PSK authentication in WPA3 TrueFalseQuestion 41 of 50 42. Identify the authentication and encryption solutions that are defined by WPA3802.1X EAP authenticationGCMP-256 encryptionPSK authenticationDynamic WEP encryptionQuestion 42 of 50 43. Which of the following offers encrypted communication for Wi-Fi networks without passwords when using WPA3?SAEOWEEAPNone of the aboveQuestion 43 of 50 44. Which of the following tools can measure the amplitude and frequency space of electromagnetic signals?Spectrum analyzerProtocol analyzerGPSAll of the aboveQuestion 44 of 50 45. Protocol analyzers are useful for the following:Capture and decode frames and packetsMonitor what protocols are sent over the networkView signal strength in coverage areasAll of the aboveQuestion 45 of 50 46. How layer 2 retransmissions affect the wireless LAN?Increased MAC overheadDecreased throughputIncreased latencyAll of the aboveQuestion 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 corruptedTrueFalseQuestion 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?MDMDMZBYODGREQuestion 48 of 50 49. Spectrum analyzers are used for which of the following?Site surveysSecurity auditing and analysisLocating the source of interferenceAll of the aboveQuestion 49 of 50 50. How many non-overlapping channels are provided by a 2.4 GHz frequency band?53121Question 50 of 50 Loading...
