Comprehensive and Detailed Explanation:
Real-Time Protocol (RTP) is used for delivering audio and video over IP networks. Excessive retransmissions of RTP frames indicate that packets are being lost or corrupted, prompting the sender to resend them. To mitigate this, the transmitting station may lower its data transmission rate to improve reliability, which can adversely affect the quality of the voice or video stream.

Channel bonding is a feature introduced in 802.11n and enhanced in 802.11ac that allows the combination of two adjacent channels to double the channel width, thereby increasing throughput. However, 1x1:1 client devices, which have a single transmit and receive antenna and support only one spatial stream, often lack the capability to utilize channel bonding effectively. These low-end devices are limited in their hardware and cannot take full advantage of the increased bandwidth that channel bonding offers.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Infrastructure Design

Effective Isotropic Radiated Power (EIRP) is calculated by adding the transmit power (in dBm) to the antenna gain (in dBi).
Transmit power: 25 mW = 14 dBm
Antenna gain: 3 dBi
EIRP = 14 dBm + 3 dBi = 17 dBm
The CWDP-305 Official Study and Reference Guide provides guidance on calculating EIRP to ensure compliance with regulatory limits and optimal network performance:
"EIRP is the sum of the transmitter output power and the antenna gain, accounting for any losses. Accurate EIRP calculations are essential for regulatory compliance and effective wireless design." Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process

Comprehensive and Detailed Explanation:
In WLANs, excessive retransmissions of Real-time Transport Protocol (RTP) frames, often due to interference or poor signal quality, can trigger the rate adaptation algorithm in client devices. This algorithm reduces the data transmission rate to maintain connectivity, which can lead to increased latency and degraded voice quality.
Reference:CWDP-305 Study Guide, Chapter on Post-Design ValidationandTroubleshooting - Voice over WLAN Troubleshooting.

Comprehensive and Detailed Explanation:
While SSID hiding might seem like a security measure, it's not effective because certain management frames must include the SSID, making it discoverable. Specifically, theAssociation Requestframe always includes the SSID. This frame is sent by a client device when it attempts to associate with an access point (AP), and it must specify the SSID to identify the desired network. Therefore, even if the SSID is hidden in beacon frames, it can still be detected through association requests.
Beacon frames: Typically used by APs to advertise their presence; can be configured to omit the SSID.
Probe request/response frames: Used during active scanning; the SSID may or may not be included.
Authentication response frames: Do not necessarily include the SSID.
Reference:CWDP-305 Study Guide, Chapter on Protocol Analysis - Management Frames.