300-425 Practice Questions
Prepare for 300-425 with more than an answer.
- Exam fee
- $300 USD
- Level
- Professional
- Valid for
- 3 years
Domains covered on the exam 4
- Wireless Site Survey25%
- Wired and Wireless Infrastructure30%
- Mobility25%
- WLAN High Availability20%
- 1
An enterprise is deploying a Cisco Catalyst 9800-CL Wireless Controller in a private cloud environment. To ensure high availability (HA) using Stateful Switchover (SSO), which three specific requirements must be met regarding the latency, jitter, and bandwidth of the link between the active and standby instances? (Select THREE)
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Correct answer: B, C, E
The path between the HA pair must support a minimum MTU of 1500 bytes to ensure that large state synchronization packets are not fragmented or dropped.
Cisco recommends a minimum throughput of 60 Mbps for the RP link to handle the database synchronization traffic adequately.
For Cisco Catalyst 9800 SSO, the link between the two controllers must have an RTT latency of less than 80 ms (though lower is better) to maintain state synchronization without timing out.
- 2
A network engineer is configuring a mobility group between two Cisco Catalyst 9800 controllers residing in different data centers separated by a WAN. The engineer wants to ensure that data traffic for roaming clients is tunneled back to the anchor controller while management traffic remains local. Which specific mobility architecture component facilitates this data tunneling?
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Correct answer: B
In Cisco mobility architectures, when Layer 3 roaming occurs (or auto-anchor mobility is used), the client data traffic is encapsulated in a CAPWAP Data tunnel (UDP port 5247) and sent between the Foreign and Anchor controllers. Control traffic uses UDP 5246.
- 3
A university is designing a new wireless network for a lecture hall that seats 500 students. The goal is to support high-bandwidth video streaming for all students simultaneously. Which design approach best addresses the high-density requirement while minimizing co-channel interference?
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Correct answer: B
In high-density environments, using narrow channels (20 MHz) increases the number of available non-overlapping channels, reducing co-channel interference. Directional antennas help confine the RF energy to specific seating sections, further isolating cells and allowing for frequency reuse.
- 4
True or False: When performing a predictive site survey using Ekahau Pro, importing a CAD file (.dwg) allows the software to automatically assign attenuation values to walls based on the layer information provided in the file, provided the layer mapping is configured correctly.
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Correct answer: A
Modern planning tools like Ekahau Pro can import CAD files and map specific CAD layers (e.g., 'A-WALL-BRICK') to specific wall types with predefined attenuation values, significantly speeding up the wall drawing process.
- 5
A network architect is determining the power requirements for a deployment of Cisco Catalyst 9136 Access Points. These APs require 802.3bt (uPoE) to operate with full functionality, including the USB port and tri-radio operation. If the switch only supports 802.3at (PoE+), what is the expected behavior of the AP?
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Correct answer: B
Cisco Catalyst APs are designed to operate in a power-save mode when insufficient power is negotiated. With 802.3at (30W), a high-end AP like the 9136 will typically disable auxiliary features like USB and may reduce radio chains (e.g., 4x4 to 2x2) or disable the 6 GHz radio depending on the specific model logic.
- 6
A network engineer is preparing for an office site survey with a height of 2.5 meters. Which three components are recommended to complete the survey? (Choose three.)
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Correct answer: A, B, D
- 7
An engineer is designing a wireless network that will support many different types of wireless clients. When conducting the survey, which client must be used to ensure a consistent experience for all of the wireless clients?
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Correct answer: A
- 8
An engineer has performed a predictive site survey for high-speed data and voice in an indoor office. What is the recommended data rate with גˆ’67 dBm signal level for optimal VoWLAN design?
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Correct answer: C
