Here you have the best Cisco 200-355 practice exam questions
In the current RF environment, the noise floor is -95 dBm. A tablet needs an SNR of 25 dB to transmit at the required speed. What must the RSSI cell edge be to meet the required SNR?
The Signal-to-Noise Ratio (SNR) is calculated by subtracting the noise floor from the Received Signal Strength Indicator (RSSI). Given that the noise floor is -95 dBm and the required SNR is 25 dB, the RSSI at the cell edge must be -95 dBm + 25 dB, which equals -70 dBm.
An access point is currently transmitting at 4 mW. The customer needs to increase its signal strength by 6 dB to create a larger wireless cell. What should the new transmit power be?
To increase the signal strength by 6 dB, the power must be quadrupled. This is because a 3 dB increase doubles the power, and another 3 dB increase doubles it again (3 dB + 3 dB = 6 dB). Starting from 4 mW and quadrupling it results in 4 * 4 = 16 mW.
A customer has requested a single point of policy enforcement for LAN and WLAN. Which deployment model should be used?
A converged deployment model should be used. This model handles both LAN and WLAN control through optional modules installed in network switches, such as Cisco Catalyst switches, providing a single point of policy enforcement for both LAN and WLAN.
When deploying a Cisco Cloud Wireless Infrastructure, what two destination ports must be open? (Choose two.)
When deploying a Cisco Cloud Wireless Infrastructure, ports UDP/5246 and UDP/5247 must be open. These ports are utilized for CAPWAP (Control And Provisioning of Wireless Access Points) communication between access points and wireless LAN controllers. TCP/5246 and TCP/5247 are not the correct ports for CAPWAP traffic, and the other TCP/UDP ports listed are not associated with the necessary communication protocols for the Cisco Cloud Wireless Infrastructure.
Refer to the exhibit.
A help desk ticket has been entered for the wireless infrastructure. A wireless client is not able to connect at IEEE 802.11n rates. Which option allows for connectivity?
To allow for connectivity at IEEE 802.11n rates, WMM (Wi-Fi Multimedia) must be enabled. WMM is essential for obtaining 802.11n and 802.11ac data rates because it manages quality of service (QoS) by prioritizing voice, video, and data packets, and reducing Interframe Spacing for high-priority packets. With WMM disabled, the maximum data rate would be limited to 54 Mbps, which is below the IEEE 802.11n standard. Therefore, setting WMM mode to Optional or Required is the correct option to enable higher data rates.