Free Practice Questions for CWNP CWDP-305 Exam

In WLAN operations, two primary scanning methods are employed by client devices to discover available wireless networks:

Active Scanning:The client device actively sends out probe request frames on various channels. Access Points (APs) that receive these requests respond with probe response frames, providing information about the network. This method allows clients to discover networks even if they are not broadcasting their SSIDs.

Passive Scanning:The client device listens for beacon frames that are periodically transmitted by APs. These beacons contain information about the network, such as SSID, supported data rates, and security protocols. Passive scanning is less intrusive and does not generate additional traffic, but it may take longer to discover networks, especially if the beacon interval is lengthy.

Understanding these scanning methods is crucial for network design and troubleshooting, as they impact how quickly and efficiently clients can connect to available networks.

Detecting interference during a spectrum analysis walkthrough is a critical part of WLAN design. The appropriate action is to record the details using the spectrum analyzer’s logging features or document it for later assessment.

From CWDP-305:

“When interferers are discovered during a walkthrough, they should be recorded and investigated. This documentation helps in adjusting AP placement, channel assignment, or applying mitigation strategies during the design process.”

— Reference: CWDP-305 Official Study and Reference Guide, Chapter on ProtocolandSpectrum Analysis

Comprehensive and Detailed Explanation:

In the context of WLAN design, certain enterprise verticals have distinct requirements and considerations:

A. Education:Educational institutions often require robust WLANs to support high-density environments, BYOD policies, and seamless roaming across campuses.

C. Healthcare:Healthcare facilities demand WLANs that support critical applications, real-time data access, and stringent security protocols to protect sensitive patient information.

E. Retail:Retail environments utilize WLANs for point-of-sale systems, inventory management, and customer engagement through Wi-Fi services.

B. WarehousesandD. Office environmentsare also important but are not typically categorized among the top three enterprise verticals in WLAN design considerations.

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.

In Wi-Fi networks, the 802.11e amendment introduces Quality of Service (QoS) by defining Access Categories (ACs) to prioritize different types of traffic.The AC_VO (Voice) category is designated for voice traffic, which requires low latency and jitter.To maintain QoS across both wireless and wired networks, it's essential to map these categories to appropriate Differentiated Services Code Point (DSCP) values.

The AC_VO category corresponds to the Expedited Forwarding (EF) DSCP value, which is 46.This mapping ensures that voice traffic receives high priority treatment throughout the network, minimizing delays and ensuring call quality.