Cisco® 300-425 Exam Practice Questions (P. 2)

GPT-4o - Answer

The tools essential for a fully measured wireless survey notably include a PoE battery, an access point, and a tall tripod. A PoE battery powers the access point during the survey, especially in environments lacking accessible electricity outlets. An access point is a must to actually emit and receive wireless signals, making its role crucial in gauging the network's performance across different locations. A tall tripod provides the necessary height to position the access point accurately, replicating real-life scenarios where APs are usually mounted elevated to optimize coverage. These three combined facilitate a realistic and thorough analysis of the wireless environment.

GPT-4o - Answer

When designing wireless networks for devices like smartphones and tablets, it's crucial to consider that they generally have fewer antennas compared to laptops. This can impact their ability to receive and transmit signals effectively. Additionally, despite common misconceptions, these devices can support higher data rates, approaching those of laptops. This capability is often overlooked but vital for optimizing network performance for real-time traffic applications. Keep both factors in mind to ensure robust and efficient network design tailored to the capabilities of these commonly used devices.

GPT-4o - Answer

When conducting an outdoor bridge site survey, always consider the near-far effect where variable signal strengths at receiving antennas might impair communication. Equally critical are power lines due to the potential electromagnetic interference they can cause to wireless signals. These factors directly impact the quality and reliability of wireless bridge links in outdoor environments.

GPT-4o - Answer

For a predictive wireless design in a medical environment requiring voice and data services, continuous coverage of -67 dBm from a single access point suffices under minimal requirements. This specification caters adequately to essential service coverage without mentioning the need for redundancy, which would mandate overlapping signals from multiple APs to ensure reliability and seamless failover. However, for environments prioritizing exceptionally high reliability in voice services, consideration for overlapping coverage from two APs at -67 dBm might be relevant, aligning with some industry practices for critical communication zones.

GPT-4o - Answer

Jammers, predominantly found in both 2.4GHz and 5GHz bands, are critical non-Wi-Fi interferers recognizable by tools like Metageek Chanalyzer. These devices, often readily available for purchase, emit a continuous high-duty signal that spans the entire bandwidth they affect. Notably, their presence indicates potential hostile actions against network integrity, especially in the 2.4GHz ISM band where regulations are less strict compared to most 5GHz frequencies. Identifying such interferences is essential for maintaining optimal network performance and security.