CWNP PW Certified Wireless Network Administrator (CWNA) Download Full Version :

Transcription

1 CWNP PW0-105 Certified Wireless Network Administrator (CWNA) Download Full Version :

2 Answer: E QUESTION: 109 In an infrastructure Basic Service Set (BSS), how does the passive scanning process occur? A. Access points broadcast Beacons on all channels of each radio within the regulatory domain. Nearby client stations record information found in the Beacons for use in the association process. B. Client stations broadcast Probe Request frames on all supported channels in the regulatory domain. Nearby access points respond with Probe Response frames. Client stations record information in the Probe Response frames for use in the association process. C. Client stations broadcast Probe Request frames on the single channel for which they are programmed. Nearby access points respond on that channel with Probe Response frames. Clientstations record information found in the Probe Response frames for use in the association process. D. Access points broadcast Beacons on a single channel for which it is programmed. Nearby client stations listen for Beacon frames and record information found in the Beacons for use in the association process. Answer: D QUESTION: 110 When a client station sends a broadcast probe request frame with a wildcard SSID, how do APs respond? A. After waiting a SIFS, all APs reply at the same time with a probe response. B. After waiting a SIFS, a designated AP sends an ACK, and then replies with a probe response. C. Each AP sends its own ACK, and then follows the ACK with a probe response. D. For each probe request frame, only one AP may reply with a probe response. E. Each AP responds in turn after preparing a probe response and winning contention. Answer: E QUESTION: 111 The IEEE standard requires ERP capable devices to be backward compatible with devices using which other physical layer specifications (PHYs)? (Choose two) 40

3 A. DSSS B. FHSS C. HR/DSSS D. ERP-PBCC E. DSSS-OFDM Answer: A, C QUESTION: 112 Which features are incorporated in the specification and are recommend for robust WLAN client security? (Choose 2) A. SSID hiding B. CAPWAP with DTLS C X/EAP D. CCMP cipher suite E. IPSec VPN F. MAC address whitelists Answer: C, D QUESTION: 113 What is the intended use for the WLAN hardware shown in the exhibit? A. Mounting a lightning arrestor to a grounding rod B. Mounting an omnidirectional antenna to a mast C. Mounting an RF amplifier to a dipole antenna D. Mounting a PoE injector to a perforated radome E. Mounting an access point to a site survey tripod 41

4 Answer: B QUESTION: 114 What is the purpose of the WLAN component shown in the exhibit? A. Connecting an unterminated coaxial RF cable to an N-type female connector on an antenna B. Adapting an antenna with an SMA connector to an AP with an N-type female connector C. Connecting a lightning arrestor (gas discharge tube) to a grounding rod cable D. Providing a fixed amount of signal attenuation between a signal source and an SMA antenna connector Answer: B QUESTION: 115 What is the general type and purpose of the application shown in the exhibit? 42

5 A. Laptop-based Site Survey Utility - Creating a list of necessary APs and plotting their locations on a floor plan B. Wireless Network Management System - Managing multiple autonomous APs through the SNMP protocol C Protocol Analyzer - Capturing and decoding frames for the purpose of troubleshooting and optimization D. Laptop-based Spectrum Analyzer - Monitoring the RF spectrum for interference sources and improper system operation E. WLAN Discovery Tool - Locating and identifying secured and unsecured WLAN access points F. Wireless Intrusion Protection System - Monitoring frame exchanges for performance and security analysis and reporting Answer: E QUESTION: 116 For what reason would the AP enclosure shown in the exhibit be used in an indoor WLAN deployment at an industrial facility? (Choose 2) 43

6 A. Aesthetic requirements B. Physical security and theft prevention C. Protection from environmental conditions D. Reduce transient RF interference E security compliance Answer: B, C QUESTION: 117 Using the exhibit as a reference, what is the maximum number of spatial streams that could be used for a downlink HT- OFDM transmission from AP-1 to STA-3? A. One spatial stream, because the BSS must maintain backwards compatibility with STA-2, which supports only g (ERP) without MIMO or multiple spatial streams. 44

7 B. Two spatial streams, because the number of spatial streams for an HT-OFDM transmission is limited to the capabilities of the least capable HT station in the BSS. C. Two spatial streams, because the third transmit chain in the HT AP must be used simultaneously for protection mechanisms with the g (ERP) station. D. Three spatial streams, because HT-OFDM transmissions will be preceded with protection mechanisms using a basic data rate for STA-2 and possibly STA-1. Answer: D QUESTION: 118 What is the approximate beamwidth of the antenna displayed in the exhibit? A. 15 degrees B. 30 degrees C. 50 degrees D. 70 degrees E. 120 degrees Answer: B QUESTION: 119 Given the Wi-Fi certification shown in the exhibit, what statement is FALSE about this device? 45

8 A. This client device supports protection mechanisms such as RTS/CTS and/or CTS-to- Self. B. This client device supports both TKIP and CCMP cipher suites. C. 300 Mbps is the maximum supported data rate for this device. D. This client device supports the ERP, OFDM, and HT physical layer specifications. E. This client device supports X.509 certificates for EAP authentication. Answer: C QUESTION: 120 What type of RF transmitter is shown in both of the spectrum analysis exhibits? 46

9 A. Military radar B. Bluetooth mouse C. Microwave oven D. Wireless video camera E. WIPS sensor Answer: D 47

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