920-238 考试题库

免费下载920-238认证考题Demo

下载 920-238 Pdf 认证考试题库
　
　
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 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

4. 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

5. 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

选择 QuickPass 920-238 题库

920-238 考试是 Nortel 公司的 Other Nortel Certification 认证考试官方代号，QuickPass 的 920-238 权威考试题库软件是 Nortel 认证厂商的授权产品，QuickPass 绝对保证第一次参加 920-238 考试的考生即可顺利通过，否则承诺全额退款！

Other Nortel Certification 认证作为全球IT领域专家 Nortel 热门认证之一，是许多大中IT企业选择人才标准的必备条件。 如果你正在准备 920-238 考试，为 Nortel Other Nortel Certification认证做最后冲刺，又苦于没有绝对权威的考试真题模拟， QuickPass 希望能助你成功。

Quickpass 920-238 Exam Features