CWDP-305 Exam Dumps - CWNP CWDP Wi-Fi Design Questions and Answers

In the context of evaluating published competitive tests by equipment vendors, it's crucial to recognize the common omissions that can impact the validity and applicability of the test results.

According to the CWDP-305 Official Study and Reference Guide, these tests often lack:

Client devices and configurations: The specific client devices used in testing, along with their configurations, are frequently not disclosed. This omission makes it challenging to assess the compatibility and performance implications for different client types.

Detailed test methodology: A comprehensive description of the test procedures, including the environment, tools used, and step-by-step processes, is often missing. Without this information, replicating the tests or understanding the context of the results becomes difficult.

Detailed configurations of each vendor’s equipment: The exact settings and configurations applied to the equipment under test are typically not provided. This lack of transparency hinders the ability to determine whether the equipment was optimized or configured in a standard manner during testing.

These omissions can lead to biased or non-reproducible results, making it essential for network professionals to critically assess such vendor-published tests.

Comprehensive and Detailed Explanation:

IEEE 802.3at, also known as PoE+, provides up to 30 watts of power per port. To calculate the minimum Power over Ethernet (PoE) budget required for 6 access points (APs):

30 W/AP × 6 APs = 180 W

Therefore, a switch must have a minimum PoE budget of180 wattsto support six 802.3at-powered APs.

In North America, Wi-Fi devices operating in the 2.4 GHz band are typically restricted to channels 1 through 11. However, in Europe, channels 12 and 13 are also permitted. If a European AP is configured to operate on channel 13, a North American device may not recognize or connect to it, leading to low RSSI readings or inability to connect.

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In this scenario, the AP in the room is likely operating on channel 13, which the traveler's device cannot utilize, resulting in low RSSI. Conversely, the lobby APs are operating on channels 1 through 11, which are compatible with the traveler's device, leading to normal RSSI readings.

Other options, such as the AP using ZigBee or Bluetooth, are unlikely, as these technologies are distinct from Wi-Fi and would not present as Wi-Fi SSIDs. The switchport speed, while affecting throughput, does not directly impact RSSI.

Outdoor antenna installations are particularly susceptible to lightning strikes due to their elevated positions and exposure to the elements.Lightning surge suppressionis essential to protect both the antenna and the connected equipment from the high voltages and currents associated with lightning-induced surges.

Implementing proper lightning protection involves installing surge protectors and ensuring adequate grounding of the antenna system. This not only safeguards the equipment but also enhances the overall reliability and safety of the wireless network infrastructure.

Comprehensive and Detailed Explanation:

For live video streaming to multiple recipients,Multicastingis an efficient method to deliver the same content simultaneously without consuming additional bandwidth for each recipient. Proper configuration of multicast in WLANs ensures that video streams are transmitted effectively, reducing latency and conserving network resources.

Comprehensive and Detailed Explanation:

Using wider channel widths like 80 MHz can increase throughput but also reduces the number of available non-overlapping channels, leading to increased co-channel interference (CCI), especially in dense environments.Reconfiguring APs to use 20 MHz channel-widths enhances frequency reuse and minimizes CCI, thereby improving application performance in an All-Wireless-Office setup.

In the 5 GHz band, certain channels like 144 are not universally supported across all devices, especially older 802.11n clients. If the AP is operating on channel 144, and the client's regulatory domain or hardware does not support this channel, the SSID will not be visible to the client.

The CWDP-305 Official Study and Reference Guide notes:

"Client devices may not support all channels in the 5 GHz band, depending on their regulatory domain and hardware capabilities. Channel 144, for example, is not supported by all 802.11n clients."

CAPWAP and DTLS are the type of standards-based encryption used by office extension APs for the traffic tunnel. Office extension APs are wireless access points that can be deployed in remote locations and connect to a central wireless controller via a secure tunnel over the Internet. CAPWAP is the Control and Provisioning of Wireless Access Points protocol, which defines how the wireless controller and the office extension APs communicate and exchange control and data messages. DTLS is the Datagram Transport Layer Security protocol, which provides encryption and authentication for the CAPWAP tunnel. DTLS is based on TLS, but it uses UDP instead of TCP as the transport layer protocol, which makes it more suitable for real-time applications. DTLS protects the CAPWAP tunnel from eavesdropping, tampering, and replay attacks, and ensures the confidentiality and integrity of the wireless traffic. References: CWNP, CWDP Certified Wireless Design Professional Official Study Guide, Configure OEAP and RLAN on Catalyst 9800 WLC, Hardening Microsoft 365, Office 2021, Office 2019 and Office 2016

Comprehensive and Detailed Explanation:

A signal with a low duty cycle indicates that it is active only for short periods and remains inactive for the majority of the time.Such signals typically have minimal impact on WLAN performance because they occupy the channel infrequently, allowing Wi-Fi transmissions to occur during the inactive periods.Therefore, while it's essential to be aware of such signals, they generally do not pose significant interference to WLAN operations.

The IEEE 802.11y amendment introduced support for operation in the 3.65–3.7 GHz frequency band, allowing for higher power transmissions up to 20 watts Equivalent Isotropically Radiated Power (EIRP).This enhancement was designed to improve wireless coverage and performance, especially in environments requiring extended range and penetration.

The increased power and frequency range provided by 802.11y facilitate better service in areas where traditional Wi-Fi bands may be congested or less effective.