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H3C GB0-342 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| WLAN Solutions | 15% | - Indoor and outdoor WLAN deployment - WLAN integration with wired networks - Typical industry application scenarios - High-density and roaming solutions |
| H3C Wireless Product Features and Configuration | 20% | - User access and authentication setup - Basic WLAN service deployment - Radio and VLAN configuration - WLAN controller and AP hardware specifications |
| WLAN Survey and Design | 15% | - Capacity and coverage design principles - AP placement and antenna selection - Frequency planning and interference avoidance - Site survey process and tools |
| WLAN Product Operation and Maintenance | 15% | - Device management and monitoring - Performance monitoring and reporting - Configuration backup and upgrade - System logging and alarm handling |
| WLAN Optimization Introduction | 5% | - Capacity and coverage tuning - Performance optimization methods - Interference mitigation techniques |
| Wireless Technology System and Theory | 20% | - WLAN security mechanisms - WLAN service models and QoS - RF principles and propagation characteristics - 802.11 protocol architecture and standards |
| Wireless Product Troubleshooting and Management | 10% | - Controller-AP communication faults - Radio signal and interference problems - Roaming failure diagnosis - Common connection and authentication issues |
H3CSE-WLAN Sample Questions:
1. 以下说法正确的是
A) 在多楼层覆盖时,信道的设置要考虑三维空间的信号干扰。
B) WLAN 和 PHS 频段相近,空中衰减,当设备功率相同,覆盖范围类似给 WLAN 与 PHS 共站址建设提供有利条件。
C) 用户间隔离功能可以减少广播报文和用户间流量对网络的影响,同时还可以避免一些 ARP 攻击的发生,使无线网络使用起来稳定安全。
D) 采用 WLAN 双频合路器扩容,实施快,成本低,可迅速热点区域提高一倍的接入用户,并可方便部署负载均衡等功能。
2. 支持 802.11n 的 AP 使用 20MHz 信道带宽与 802.11n 无线网卡可协商的最高速率是 _______
A) 54Mbps
B) 150Mbps
C) 300Mbps
D) 108Mbps
3. 在无线信号的远距离传输中,菲涅尔区( Fresnel Zone )是一个重要的概念。
以下关于菲涅尔区说法正确的是
A) 无线信号沿直线传播,但在传播时会散开,而波束之间必需净空就称为菲涅尔区。
B) 在菲涅尔区中的任何障碍物都有可能影响网络的通信,最好给与清楚,保证 60% 的菲涅尔区被视为有效的。一般可以根据经验值
C) 菲涅尔区的大小是路径长度的函数,路径越长,则菲涅尔区越宽。
D) 菲涅尔区是在视距的路径中形成的一个椭圆区域。它随着可视距离和信号频率的改变而改变,必须的菲涅尔区净空在路径中心处
4. 以下关于 debugging 命令使用说法正确的是
A) 在没有完全掌握 debugging 命令的工作过程以及它所提供的信息前,不要轻易使用该 debugging 命令
B) 尽量在网络使用的低峰期或网络用户较少时使用,以降低 debugging 命令对系统的影响性
C) 应当使用 debugging 命令来查找故障,而不是用来监控正常的网络运行
D) 由于 debugging 命令在各个输出方向对系统资源占用的情况不同,视网络负荷状况,我们应当在使用方便性( info-center console debugging 命令)和资源耗费小( info-center log buffer debugging 命令)间做出平衡
E) 仅当寻找某些类型的流量或故障并且已将故障原因缩小到一个可能的范围时,才使用某些特定的 debugging 命令,这样一方面可以减少 debugging 命令对设备性能的影响,另一方面减少了许多无用信息的输出,有利于更加迅速定位故障
5. 能够影响一台 AP 的有效覆盖范围的主要因素有:
A) 天线类型(增益、方向角等)
B) 用户所期望的数据速率(带宽)
C) AP 及天线的安装位置
D) AP 的工作模式( FAT AP 或 FIT AP )
E) AP 发射功率
Solutions:
| Question # 1 Answer: A,B,C,D | Question # 2 Answer: B | Question # 3 Answer: A,B,C,D | Question # 4 Answer: A,B,C,D,E | Question # 5 Answer: A,B,C,E |




