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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Collection Implementation | 25% | - Onboarding and discovery
|
| Topic 2: Data Analysis and Troubleshooting | 30% | - Troubleshoot common issues
|
| Topic 3: Platforms and Architecture | 20% | - Cisco network assurance solutions architecture
|
| Topic 4: Insights and Alerts | 25% | - Define and manage alerts
|
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NEW QUESTION # 36
A network monitoring engineer is tasked with creating a widget that displays the average packet loss from an agent installed as a Linux package. What is the data source and measure that should be selected?
Answer: C
Explanation:
InDesigning and Implementing Enterprise Network Assurance (300-445 ENNA), dashboard widgets must be mapped to the correct telemetry data source and statistical measure. When an agent is installed as aLinux packageon an organization's infrastructure, it is classified as anEnterprise Agent.
The correct configuration for this widget isCloud & Enterprise Agents and Mean(Option B).
* Data Source:Since the Linux-based agent is an Enterprise Agent, it shares the same data source category as Cloud Agents in the ThousandEyes dashboard configuration menu.
* Measure:To display the "average" packet loss as requested, theMean(the arithmetic average) is the appropriate statistical measure.
Other options are unsuitable:
* Option A:Endpoint Agentsare those installed on Windows/macOS user devices, not typically a standard Linux server package used for infrastructure monitoring.Medianwould show the middle value, not the average.
* Option C:Routingrefers to BGP data, which does not report packet loss in the same way as synthetic network tests.
* Option D:Devicesrefers to hardware monitored via SNMP, and annth Percentileis a specific statistical cutoff (like 95th percentile) rather than a simple average.
NEW QUESTION # 37
What is the first step in setting a metric baseline for network performance monitoring?
Answer: D
Explanation:
The first step in setting a metric baseline is defining key performance indicators (KPIs) to measure and monitor network performance in network assurance.
NEW QUESTION # 38
Considering the observed network behavior and the information in the exhibits, which action would be the most appropriate next step for the network administrator to take?
Answer: B
Explanation:
TheDesigning and Implementing Enterprise Network Assurance (300-445 ENNA)framework emphasizes that the goal of internet intelligence is to enable rapid and accurate escalation to the party responsible for a service degradation. Based on the evidence of a BGP Hijack identified in the previous question, the issue is occurring entirely within the public internet ecosystem.
The most appropriate next step is toreach out to the Internet Service Provider (ISP) to report the suspected BGP hijacking incident(Option B). Since the traffic is being misdirected by an external Autonomous System (AS 10297) before it reaches the intended destination (AS 16509), the fix must occur at the routing policy level of the major transit providers. The network administrator should provide the ISP with the ThousandEyes "Share Link" or screenshots showing the path change and the unauthorized AS announcement, as this data serves as proof to accelerate the ISP's mitigation efforts, such as implementing prefix filters or contacting the offending network.
Other options are ineffective for this specific scenario:
* Option A:The path visualization shows that traffic is successfully leaving the local network and reaching the public internet; the problem is many hops away from the internal routers.
* Option C:Blocking trafficfromAS 10297 does not solve the problem of your traffic beingattractedto it.
The hijack affects how the rest of the world (including your ISP) sees the route to your destination.
* Option D:DNS is not the issue; the agent successfully resolved the hostname to the correct IP, but the BGP layer misdirected the packets at the routing level.
By identifying the issue as an external routing event, the administrator avoids wasting internal resources and directly triggers the necessary external remediation.
NEW QUESTION # 39
Which Thousand Eyes test is specifically designed to assess the performance of DNS resolution?
Answer: A
Explanation:
The DNS test in Thousand Eyes is specifically designed to assess the performance of DNS resolution, identifying latency and response time issues in network assurance.
NEW QUESTION # 40
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: C
NEW QUESTION # 41
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