Exam Title : Nortel 920-240 : Nortel Wireless Mesh Network Rls. 2.3 Implementation & Management Version : R6.1 www.prepking.com Prepking - King of Computer Certification Important Information, Please Read Carefully Other Prepking products A) Offline Testing engine Use the offline Testing engine product to practice the questions in an exam environment. B) Study Guide (not available for all exams) Build a foundation of knowledge which will be useful also after passing the exam. Latest Version We are constantly reviewing our products. New material is added and old material is updated. Free updates are available for 90 days after the purchase. You should check your member zone at Prepking and update 3-4 days before the scheduled exam date. Here is the procedure to get the latest version: 1.Go towww.Prepking.com 2.Click on Member zone/Log in (right side) 3. Then click My Account 4.The latest versions of all purchased products are downloadable from here. Just click the links. For most updates,it is enough just to print the new questions at the end of the new version, not the whole document. Feedback If you spot a possible improvement then please let us know. We always interested in improving product quality. Feedback should be send to
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[email protected].. www.prepking.com 1. Software running on a Wireless AP detects operational and functional anomalies that can cause fault conditions. On which three can the Wireless AP software detect status and problems? (Choose three.) A. DHCP leases B. Network Time Synchronization C. Wireless Gateway 7250 software error D. Wireless AP FTP server misconfigured E. Mobile node quarantine and IPsec tunnel status Answer: ABE 2. A Wireless AP 7220 has reported a fault condition to Enterprise Network Management System (ENMS). A technician has identified and taken corrective action to resolve the alarm condition. Which action may be required to clear future traps? A. Restart ENMS to apply new parameter values. B. Reboot the Wireless AP 7220 to apply new parameter values. C. Drop and reestablish transit links to apply new parameter values. D. Reboot the Wireless Gateway 7250 to apply new parameter values. Answer: B 3. What must be installed with Enterprise Network Management System (ENMS) to provide support for the Wireless Mesh Network? A. SNMP agent software B. Device Integrated Toolkit C. Wireless Mesh Network MIB D. ICMP polling and trap registration Answer: B 4. A customer is using Enterprise Network Management System (ENMS) to manage fault data for a Wireless Mesh Network. Which two ways does ENMS collect this data? (Choose two.) A. Via polling by ENMS B. Via FTP server in NOSS C. Via traps sent by a device D. Via Syslog server in NOSS Answer: AC 5. A technician has implemented the Wireless AP@NAP, but there are problems downloading the FTP configuration. Sessions indicate that an IPsec tunnel is established. Which two statements describe possible causes of this problem? (Choose two.) A. The FTP server is not started. B. The private IP address Pool is exhausted. www.prepking.com C. The configuration file is named incorrectly. D. There is an incorrect Default Gateway on AP@NAP. Answer: AC 6. A university has provisioned a Wireless Mesh Network (WMN) for its campus. What is the packet flow for a standalone Wireless AP? A. Transit Link Up, Radius Authentication, IP received via DHCP, Config downloaded via FTP OSPF routes populate, IPsec Tunnel established B. Transit Link Up, Radius Authentication, IP received via DHCP, OSPF routes populate, IPsec Tunnel established, Config downloaded via FTP C. Transit Link Up, IP received via DHCP, OSPF routes populate, Radius Authentication, IPsec Tunnel established, Config downloaded via FTP D. Transit Link Up, IP received via DHCP, Radius Authentication, OSPF routes populate, IPsec Tunnel established, Config downloaded via FTP Answer: B 7. A university has provisioned a Wireless Mesh Network (WMN) for its campus. What is the packet flow for a mobile node joining the network? A. associate to a Wireless AP, authenticate through RADIUS, obtain IP address from DHCP server, register with home agent on the Wireless Gateway 7250 B. associate to a Wireless AP, authenticate through RADIUS, register with home agent on the Wireless Gateway 7250, obtain IP address from DHCP server C. associate to a Wireless AP, obtain IP address from DHCP server, authenticate through RADIUS, register with home agent on the Wireless Gateway 7250 D. associate to a Wireless AP, register with home agent on the Wireless Gateway 7250, authenticate through RADIUS, obtain IP address from DHCP server Answer: A 8. The Wireless Gateway 7250 has had a nonfatal fault condition; however, the Wireless Gateway 7250 has since been rebooted. What are two locations where information on the fault condition would be stored? (Choose two.) A. FTP server B. ENMS Fault Manager C. Crash file in the Wireless AP 7250 D. Eventlog file on the Wireless Gateway 7250 Answer: BD 9. A technician has implemented the Wireless AP@NAP, but there are problems connecting to the 7250. Information in the event log indicates IPsec tunnel is not able to establish. Which two statements describe www.prepking.com possible causes of this problem? (Choose two.) A. The MIP firewall filter was not configured. B. The AP@NAP IP address is set incorrectly. C. The IP address Pool for private IPs is exhausted. D. The user account for AP@NAP has the incorrect password. Answer: CD 10. A university has provisioned a Wireless Mesh Network (WMN) for its campus. What is the packet flow for an AP@NAP joining the network? A. IPsec tunnel initiated, OSPF routes are populated, FTP session initiated B. IPsec tunnel initiated, FTP session initiated, OSPF routes are populated C. OSPF routes are populated, IPsec tunnel initiated, FTP session initiated D. OSPF routes are populated, FTP session initiated, IPsec tunnel initiated Answer: C 11. Which best describes lobe? A. the measure of path loss B. the ability of an antenna to focus a signal C. an increase in radio frequency (RF) signal's amplitude D. the area covered by a radio frequency (RF) signal sent from an antenna Answer: D 12. What is the purpose for the Wireless AP 7220-Duo configuration that is created when two Wireless AP 7220s are connected together, with a cross-over Ethernet cable? A. It decreases latency. B. It protects against failure. C. It provides backup to the other. D. It increases capacity on a single transit link. Answer: A 13. In a Wireless Mesh Network, the mobile node moves from AP to AP by matching the SSID. What advertises the SSID to the mobile node? A. the VAP B. the VPN C. the WAP D. the WMN Answer: A 14. Which two types of scanning are used by clients to connect to Access Points (APs)? (Choose two.) A. Active scanning www.prepking.com B. Bypass scanning C. Passive scanning D. Intelligent scanning Answer: AC 15. The Access Link (Wireless AP to Mobile) supports the IEEE standards 802.11b/g, and the AP provides bandwidth up to 54Mbps at 50-100 meters. Which statement describes how to increase this coverage range? A. Disable 802.11b. B. Enable turbo mode. C. Raise mounting height. D. Install co-linear antennas. Answer: D 16. What is it called when radio frequency (RF) signals are bounced and/or reflected and an interference problem is created at the receiver? A. signal distortion B. multipath reception C. attenuation of signal D. randomly varied signal loss Answer: B 17. Which three basic antenna beam types are used for radio frequency (RF) signal coverage? (Choose three.) A. Semi-directional B. Omni-directional C. Highly directional D. Quasi-directional E. Partially directional Answer: ABC 18. What is the security protocol that is preferred in WLAN because it uses Layer 3 encryption? A. Authentication Header (AH) B. Enhanced Access Control (EAC) C. Authorized Header Protocol (AHP) D. Encapsulating Security Protocol (ESP) Answer: D 19. A Wireless LAN operates on the IEEE 802.11b standard with an 11Mbps bandwidth. What is this modulation technique called? www.prepking.com A. Complimentary code keying (CCK) B. Direct Sequence Spread Spectrum (DSSS) C. Frequency-Hopping Spread Spectrum (FHSS) D. Orthogonal frequency division multiplexing (OFDM) Answer: A 20. What is the minimum level of technology required to hack an unsecured WLAN? A. a SecureID card B. thorough knowledge of WLAN C. a laptop with wireless capability D. sophisticated radio frequency (RF) techniques Answer: C 21. A Wireless AP 7220 has an LED status indicator on the base of the unit. The LED pattern on an AP@NAP is alternating Red/Green. What does this pattern indicate? A. initializing B. initialized and transit link neighbors detected C. initialized and no transit link neighbors detected D. initialized and transit link up, but no Wireless Gateway connection Answer: B 22. When sniffing packets on a WLAN, information about the manufacturer, channel, signal strength, signal-to-noise ratio, and WEP status can all be acquired. What information can be readily acquired? (Choose two.) A. SSID B. MAC address C. login password D. network routing table E. physical location of device Answer: AB 23. The Wireless AP 7215/7220 is capable of transit link searching, establishment, monitoring, maintenance and re-establishment. What provides these link capabilities? A. the Atheros WiFi chipset B. an optional third-party firmware C. the Enterprise Network Management Software D. a proprietary protocol running above the MAC layer Answer: D 24. A Wireless LAN operates on the IEEE 802.11g standard with up to 54Mbps bandwidth. What is this www.prepking.com modulation technique called? A. Complimentary code keying (CCK) B. Direct Sequence Spread Spectrum (DSSS) C. Frequency-Hopping Spread Spectrum (FHSS) D. Orthogonal frequency division multiplexing (OFDM) Answer: D 25. What statement describes radio frequency (RF) refraction? A. multipath reflection B. RF signal scatters in multiple directions C. RF signals bending as it passes around an object D. RF signals bending as it passes through an object Answer: D 26. Which three are functions of the Wireless Gateway 7250? A. It resolves AP routing issues. B. It searches for the wired connection. C. It hides wireless mobility from the backbone. D. It acts as an anchor point for security and mobility. E. It connects Community Area Networks (CANs) to CANs. Answer: CDE 27. The Wireless LAN IEEE 802.11b and 802.11g standards have two significant differences that influence the performance. Which two statements describe these differences? (Choose two.) A. The channels are wider in the 'g' version. B. The carriers operate in different frequency bands. C. The 'b' version is backwards compatible with the 'g' version. D. The 'g' version supports higher bandwidth than the 'b' version. E. The 'b' version supports 1 modulation technique, while the 'g' version supports 2 modulation techniques. Answer: DE 28. Which two statements describe what Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) does to avoid collisions and ensure data reception? (Choose two.) A. It requests a Clear to Send. B. It follows a strict timing protocol. C. It waits for authorization to send. D. It guides the activity on the airwaves. Answer: AC 29. When the Access Point signal is 10mW, and the antenna gain is 13dBi, what is the transmitted power? www.prepking.com A. 20mW B. 130mW C. 200mW D. 400mW Answer: C 30. How are users assured that they are being authenticated by a legitimate access point? A. Mutual authentication B. Server authentication C. RADIUS authentication D. Diameter authentication Answer: A 31. Which three are the power options for the Wireless AP 7220? (Choose three.) A. -48VDC power B. 120VAC power C. 230VAC power D. Power Over Ethernet E. Luminaire photocell power Answer: BCE 32. Which two statements describe features of the Wireless Bridge 7230? A. It supports power over T1 lines. B. It has full local and remote management capabilities. C. Time Division Duplex (TDD) transmission requires an unlicensed spectrum. D. It has an external antenna that increases the operation range up to 80 km (50 miles). Answer: BD 33. The AP 7220 has two connectors labeled AL1 and AL2. What are these connectors intended for? A. Ethernet connectors B. alternative power connectors C. external antenna connection for transit link D. external antenna connection for access link Answer: D 34. The Wireless Mesh Network supports clusters of Wireless APs under the control of a Wireless Gateway. Which type of cluster is self-organizing and auto-configuring? A. Multi-Area Network (MAN) B. Network Access Points (NAP) C. Broadband Area Network (BAN) www.prepking.com D. Community Area Network (CAN) Answer: D 35. The Wireless Gateway 7250 hardware encryption accelerator card offloads bulk IPsec duties from the main CPU. Which two statements describe how this card benefits the Wireless Mesh Network? (Choose two.) A. It complies with AES encryption standards. B. It increases the number of supported users. C. It reduces the number of NAP routers required. D. It increases the number of supported access points. Answer: BD 36. When measuring the gain of an antenna, the unit of measurement is dBi. What does the "i" stand for? A. initial radiator B. incident radiator C. isotropic radiator D. isomorphic radiator Answer: C 37. When radio frequency (RF) signals are increased through the use of an amplifier and/or an antenna, what is the signal increase called? A. gain B. distortion C. double power D. exceptional increase Answer: A 38. The Wireless Mesh Network uses wireless communication between access points, which creates a peer-to-peer mesh topology with "self-healing" possibilities. Which protocol allows "self-healing" to occur? A. RIP B. WEP C. SNMP D. OSPF Answer: D 39. The Wireless AP requests an IP address and configuration file from the FTP server within the Network Operations and Support System (NOSS), and this information is used to auto-discover the Wireless Gateway to build a VPN tunnel. Which two must be discovered before this can take place? (Choose two.) A. DHCP server B. OSPF routing www.prepking.com 100% Pass Guaranteed or Full Refund Word to Word Real Exam Questions from Real Test Buy full version of exam from this link below http://www.prepking.com/920-240.htm