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| Section | Objectives |
|---|---|
| Assurance Platforms and Tools | - Cisco assurance platforms
|
| Enterprise Network Assurance Architecture | - Assurance concepts and methodologies
|
| Troubleshooting and Analysis | - Performance and fault analysis
|
| Automation and Data Interpretation | - Data-driven assurance workflows
|
| Monitoring and Telemetry Technologies | - Data collection mechanisms
|
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NEW QUESTION # 87
You are investigating intermittent failures in a ThousandEyes transaction test targeting a web application that uses Basic Authentication. The failures occur randomly across different agents and times of day. What steps would you take to troubleshoot and resolve the issue? (Select all that apply)
Answer: B,C,D
Explanation:
Troubleshooting intermittent performance issues is a core component of theDesigning and Implementing Enterprise Network Assurance (300-445 ENNA)curriculum. When a transaction test using Basic Authentication fails randomly, the engineer must employ a multi-layered diagnostic approach to determine if the fault lies with the credentials, the network path, or the application server.
The first step is toverify the correctness of credentials(Option B). Because Basic Authentication encodes credentials in the header, any change in user permissions or account lockouts will trigger immediate failures.
Performing manual logins from various geographical locations helps rule out location-based access control lists (ACLs) or regional IdP sync issues.
The most data-rich diagnostic step is toanalyze the ThousandEyes waterfall charts and HTTP response codes(Option C). The waterfall view allows the engineer to see if the failure happens during the initial 401 Unauthorized challenge or after the credentials are sent. If the charts show high "Wait Time" or 5xx errors, the issue is likely server-side latency or instability. If the "Connect Time" is high, the problem may be network-layer congestion.
Finally, if the telemetry indicates that the network path is healthy but the server is intermittently returning errors or timing out, the engineer shouldcontact the web application vendor(Option D). Providing the vendor with the specific ThousandEyes "Share Link" allows them to see the exact same packet-level and browser-level data, proving that the issue is not with the client's network but with the server-side infrastructure. Disabling authentication (Option A) is not a valid troubleshooting step for a test designed specifically to monitor an authenticated workflow.
NEW QUESTION # 88
When determining agent location, what factor should be prioritized to ensure effective data collection?
Answer: A
Explanation:
Latency considerations should be prioritized when determining agent location to ensure timely data collection and analysis in network assurance.
NEW QUESTION # 89
Drag and Drop Question
Drag and drop the commands from the bottom onto the boxes in the configuration to modify the DNS servers on an Enterprise Agent running on a Cisco Catalyst 9300 Switch.
Answer:
Explanation:
Explanation:
Modifying DNS settings for an Enterprise Agent running in App-Hosting on a Catalyst 9300 requires shutting down the running container before applying changes and then restarting it.
- deactivate removes the running application from service.
- stop halts the container so configuration changes (such as new DNS servers) can be applied.
- start brings the container back up after the configuration update.
- activate enables the application, allowing the Enterprise Agent to resume operation with the updated DNS configuration.
NEW QUESTION # 90
A CPU utilization alert for Endpoint Agents is triggering too frequently, creating alert noise. Which of the following steps would help reduce the sensitivity of the alert rule? (Select two)
Answer: C,D
Explanation:
Alert fatigue is a major operational challenge in network assurance. To make a CPU utilization alert for Endpoint Agents less sensitive and reduce "noise," an engineer must implement statistical filters that ignore transient spikes or isolated events.
The two most effective methods are:
* Increase the agent count (Option A):By requiring a higher number or percentage of agents to simultaneously exceed the threshold, the system ensures the alert represents a widespread environmental issue rather than a single user running a CPU-intensive background process.
* Require more rounds of data (Option C):Instead of alerting on a single measurement (1 of 1 round), the engineer can configure the rule to require the threshold to be breached for multiple consecutive checks (e.g., 2 of 3 rounds). This filters out brief, non-impactful CPU spikes that occur naturally during OS updates or browser startups.
Other options would have the opposite effect:
* Option B:Lowering the percentage threshold (e.g., from 90% to 50%) would cause the alert to trigger much more frequently, increasing noise.
* Option D:Enabling the alert on more agents increases the pool of potential triggers, which typically leads to more notifications unless the logic in Option A is also applied.
NEW QUESTION # 91
The network team has deployed Webex RoomOS Endpoint Agents and integrated Webex Control Hub with ThousandEyes. The VoIP team wants to know which metrics they can collect from the Webex Control Hub view. Where does the VoIP team find the network data?
Answer: D
Explanation:
According to theDesigning and Implementing Enterprise Network Assurance (300-445 ENNA) curriculum, the integration between ThousandEyes andWebex Control Hubprovides a streamlined troubleshooting experience for collaboration services. For the VoIP team to access the specific ThousandEyes network telemetry-such as latency, loss, and jitter-they must navigate to theNetwork Path(Option B) section within the Troubleshooting tab of the Control Hub.15 TheNetwork Pathvisualization is a direct result of the ThousandEyes Endpoint Agent data being pulled into the Webex interface.16When a user or RoomOS device experiences poor audio or video quality during a meeting, the Control Hub's troubleshooting view displays a "Network Path" line under the participant's details.
17By clicking on this line, the VoIP team can see a hop-by-hop breakdown of the entire route from the collaboration device to the Webex media node. This view highlights specific hops where performance is
"Poor" (red), "Fair" (yellow), or "Good" (green) based on predefined thresholds for latency (>400ms) or loss (>5%).
While "Devices" (Option A) is where the agents are activated, and "Users" (Option C) allows for selecting a specific participant, the actualtelemetry metricsand the visualization of the network route are strictly located in theNetwork Pathview. This integration eliminates the need for the VoIP team to leave the Webex environment for initial triage, as they can identify if a problem is local to the branch office or deep within a service provider's network directly from the "Network Path" dashboard.
NEW QUESTION # 92
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