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NEW QUESTION # 27
What type of alert rule configuration is used to monitor CPU utilization on end-user devices?
Answer: C
Explanation:
Threshold-based alerts are used to monitor CPU utilization on end-user devices by triggering alert notifications when CPU usage exceeds predefined threshold values, indicating potential performance issues.
NEW QUESTION # 28
Carefully review the exhibits. Which detail indicates the network issue might be caused by a BGP Hijack?
Answer: A
Explanation:
In the Designing and Implementing Enterprise Network Assurance (300-445 ENNA) curriculum, identifying routing anomalies such as BGP Hijacking is a critical aspect of external network assurance. A BGP Hijack occurs when an Autonomous System (AS) illegitimately announces a prefix it does not own, causing traffic intended for the rightful owner to be misdirected.
By contrasting Exhibit 3.4-1 (Before the Outage) and Exhibit 3.4-2 (During the Outage), a definitive change in the routing path is observed. In the baseline view (Exhibit 3.4-1), traffic from the Los Angeles agent reaches the destination network 54.239.104.0/23, which is correctly associated with Amazon.com, Inc. (AS
16509) . However, during the outage (Exhibit 3.4-2), the path visualization shows the traffic being redirected into a different network: eNET Inc. (AS 10297) . At this new location, the traffic encounters 100% Forwarding Loss at the node ten7-8.core-2.xlhost.com.
The change in the Autonomous System (AS) number from 16509 to 10297 (Option B) is the most concrete indicator of a BGP Hijack. While symptoms such as Availability Drop (Option A), Response Delay (Option C), and Packet Loss (Option D) are clearly visible in the ThousandEyes telemetry, these symptoms are generic and could be caused by various other issues like physical link failures or congestion. The shift in the AS path-specifically to an AS that does not legitimately host the target ' s IP prefix-provides the forensic evidence needed to identify the root cause as a routing takeover. This visualization allows network administrators to bypass internal troubleshooting and immediately focus on external remediation with upstream providers.
NEW QUESTION # 29
Drag and Drop Question
An engineer is creating a dashboard to include all phases for HTTP. Drag and drop the dashboard widget configurations from the bottom onto the widget options to show the middle point of all HTTP phases. Not all options are used.
Answer:
Explanation:
Explanation:
"Middle point" refers to the median, which represents the 50th percentile of all HTTP phase timings. Using the HTTP Server category with the Response Time metric ensures the dashboard displays the combined phases (DNS, Connect, SSL, Wait, Receive).
NEW QUESTION # 30
Which of the following is an example of active monitoring in network performance management?
Answer: A
Explanation:
Within the framework of Designing and Implementing Enterprise Network Assurance (300-445 ENNA), network monitoring is categorized into two primary methodologies: active and passive monitoring. Active monitoring (Option C) is characterized by the generation of synthetic or
"probes" traffic specifically designed to measure network performance. These probes simulate real-world user activity, such as HTTP requests, DNS queries, or ICMP pings, to baseline performance metrics like latency, jitter, and packet loss.
The core benefit of the active approach is its independence from actual user traffic. By sending a continuous ping or synthetic HTTP probe, an engineer can verify path availability and performance even during off-peak hours when no real users are on the network. In the context of Cisco ThousandEyes--a central platform in the ENNA certification--this is the primary mode of operation for Cloud, Enterprise, and Endpoint agents. For instance, a ThousandEyes network test proactively sends packets to a target IP or URL to visualize the hop-by-hop underlay and overlay paths.
NEW QUESTION # 31
What type of endpoint agent test will gather browser activity?
Answer: C
Explanation:
The Designing and Implementing Enterprise Network Assurance (300-445 ENNA) curriculum identifies Real User Tests (RUM) as the primary method for capturing actual browser-based interactions. While synthetic tests provide proactive baselines, Real user tests (Option C) provide visibility into the "lived experience" of an employee as they navigate corporate websites and SaaS platforms.
Real user tests utilize a lightweight browser extension (available for Chrome, Edge, and Safari) that is part of the Endpoint Agent deployment. When a user visits a domain defined in a
"Monitored Domain Set," the extension automatically begins recording performance metrics. This includes the time spent on each page, DNS resolution time, and a full browser waterfall of every object (images, scripts, CSS) loaded during the session. Crucially, it calculates an "Experience Score" for each session, allowing IT teams to identify if a user's frustration is caused by slow page rendering or underlying network issues.
NEW QUESTION # 32
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