Testinside 920-238 Exam

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920-238 考试是 Nortel 公司的 Nortel WLAN 2300 Rls. 4.1 Implementation & Management 认证考试官方代号，TestInside 920-238 权威考试学习资料软件是一款真正全面的920-238考试模拟资料，是您获得920-238知识的重要工具。920-238是来自于Nortel 厂商的认证考试科目，TestInside祝您在第一次参加 920-238 考试的考生即顺利通过，否则我们免费帮你更新或者免费赠送您其它资料一份。

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部分题目样本(非实时更新）　
　
Exam : Nortel 920-238
Title : Nortel WLAN 2300 Rls. 4.1 Implementation & Management


1. A customer wants to calculate the actual throughput for a WLAN site. The site is an 8011b WLAN rated at 11Mbps. Because of the use of back-off timers and ACKs, the throughput is reduced. Which setting is closest to the actual throughput of this site?
A. 5.5 Mbps
B. 6.5 Mbps
C. 7.5 Mbps
D. 8.5 Mbps
Answer: A

2. The WEP security model is good, but it can have vulnerabilities. What should be implemented with the WPA security model to help reduce these vulnerabilities?
A. Incorporate the Ipsec security protocols.
B. Use a Secure Socket Layer (SSL) encryption protocol.
C. Use a temporal key integrity protocol (TKIP) encryption scheme.
D. Make sure the firewall is between the WLAN and Corporate network.
Answer: C

3. A customer has deployed a WLAN using a 2300 solution. They notice that a wireless workstation close to an AP, is not receiving the desired signal strength. There is a wall between the AP and the wireless workstation. Which term describes what is occurring?
A. Diffraction
B. Absorbtion
C. Polarization
D. Assimilation
Answer: B

4. A customer is surveying a site for a WLAN 2300 solution deployment. Many walls exist in this environment and are causing the same signal to be received multiple times, but slightly delayed. This causes multiple spots inside the site to receive zero signal. Which two terms describe what is occurring? (Choose two.)
A. Multi-path
B. Reflection
C. Diffraction
D. Scattering
Answer: AB

5. Wireless networks need to provide access to multiple devices using a shared medium. Since wireless networks use the air as the medium, data collisions cannot be detected. What is the method that WLAN uses to prevent collisions?
A. CPDQ
B. CSMA/CA
C. CSMA/CD
D. Backoff Timer
Answer: B

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