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| Section | Objectives |
|---|---|
| Topic 1: Insights and Alerts | - Configure and manage alerts
|
| Topic 2: Data Analysis | - Identify trends and anomalies
|
| Topic 3: Platforms and Architecture | - Describe network assurance architecture
|
| Topic 4: Data Collection Implementation | - Deploy and manage agents
|
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NEW QUESTION # 79
Refer to the exhibit. An engineer received an alert that global internet reachability for the company's advertised subnet 209.165.200.0/24 has dropped below 100%. What is the issue?
Answer: A
Explanation:
The ThousandEyes global reachability view shows that the London-10 agent path is broken, indicated by the red dashed (unreachable) path that never reaches the destination
209.165.200.0/24. The Los Angeles agent reaches the prefix normally, so the loss of global reachability is caused specifically by the London vantage point failing to reach the advertised subnet.
NEW QUESTION # 80
Refer to the exhibit.
A network engineer is tasked with configuring an alert that will trigger if the HTTP server responds with a server error. What alert conditions should be configured to meet the specified requirements?
Answer: B
Explanation:
56
In theDesigning and Implement7ing Enterpr8ise Network Assurance (300-445 ENNA)framework, configuring effective alert rules is critical for distinguishing between standard network noise and actionable application-layer failures. ForWeb - HTTP Servertests, ThousandEyes allows engineers to monitor both network-level metrics (like Connect time) and application-level indicators (like HTTP response codes).
The requirement is to trigger an alert specifically when the HTTP server responds with aserver error. In the HTTP protocol, server errors are categorized as the5XXseries of status codes (e.g., 500 Internal Server Error,
503 Service Unavailable, 504 Gateway Timeout). To meet this requirement, the engineer must configure a location alert condition where theMetricis set toResponse Codeand the condition value isserver error(5XX) (Option D).
Reviewing the other options:
* Error type is any (Option A):While this would capture server errors, it would also trigger for 4XX client errors (like 404 Not Found) and network-layer timeouts, making it too broad for a specific "server error" requirement.
* Wait Time is Dynamic (Option B):This monitors the time-to-first-byte using statistical baselining.
While high wait times oftenprecede5XX errors, this condition only alerts on latency, not on the actual error code itself.
* Response Time (Option C):Similar to wait time, this monitors performance speed rather than the logical success or failure of the server's response.
By specifically selectingResponse Code: server error(5XX), the engineer ensures that the operations team is only notified when the application backend is experiencing a functional failure, rather than just a slow response or a client-side misconfiguration.
NEW QUESTION # 81
Refer to the exhibit. Cisco ThousandEyes sent an alert that the bank website cannot be loaded in
10 seconds from the Sydney Cloud agent. What is the root cause of the website outage?
Answer: B
Explanation:
From the waterfall view, the critical delay occurs during the Receive phase of the large neo_background.jpg object:
- Receive time: 6472 ms
- Total load time: 7405 ms
- DNS, Connect, SSL, and Send times are normal.
A long Receive time indicates slow data transfer, not redirects, CPU issues, or missing objects.
This conclusively points to bandwidth throughput problems on the path between the Sydney Cloud agent and the bank site.
NEW QUESTION # 82
How would a user without coding knowledge write a transaction script to monitor a user workflow?
Answer: D
NEW QUESTION # 83
You want to monitor Microsoft Teams using ThousandEyes endpoint agents. Which tests are available for this type of application monitoring?
Answer: B
Explanation:
According to theDesigning and Implementing Enterprise Network Assurance (300-445 ENNA)best practices for collaboration monitoring,Microsoft Teams(as well as Webex and Zoom) is monitored using a combination ofScheduled and Dynamic tests(Option D).
* Scheduled Tests:These are used to proactively monitor the reachability and performance of the Microsoft Teams infrastructure. The Teams template typically includes scheduled HTTP Server tests to teams.microsoft.com and login.microsoftonline.com, along with network-layer tests to theTeams Transport Relay(e.g., worldaz.tr.teams.microsoft.com). These provide a continuous baseline of connectivity regardless of whether a user is currently in a call.
* Dynamic Tests:These are a unique feature for collaboration monitoring. When an Endpoint Agent detects that the Teams application has initiated a real-time media session (audio or video call), it automatically triggers aDynamic Testto the specific IP and port being used for that call. This allows IT teams to see the exact network path-including hop-by-hop latency and loss-of the actual call traffic while the session is active.
Real User Tests (Option C)are generally not used for Teams monitoring in the same way they are for web- based SaaS apps. Because most users utilize the Teamsdesktop clientrather than the browser, the RUM browser extension cannot capture the rich telemetry of the desktop application's internal signaling and media streams. Therefore, the specialized "Automated Session Testing" provided byDynamic Tests, combined with the proactive health checks ofScheduled Tests, constitutes the complete assurance strategy for Microsoft Teams.
NEW QUESTION # 84
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