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| Section | Objectives |
|---|---|
| Topic 1: Data Analysis | - Interpret network performance data
|
| Topic 2: Data Collection Implementation | - Deploy and manage agents
|
| Topic 3: Insights and Alerts | - Configure and manage alerts
|
| Topic 4: Platforms and Architecture | - Describe network assurance architecture
|
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NEW QUESTION # 30
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 the Designing and Implement 7 ing Enterpr 8 ise Network Assurance (300-445 ENNA) framework, configuring effective alert rules is critical for distinguishing between standard network noise and actionable application-layer failures. For Web - HTTP Server tests, 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 a server error . In the HTTP protocol, server errors are categorized as the 5XX series 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 the Metric is set to Response Code and the condition value is server 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 often precede 5XX 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 selecting Response 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 # 31
To monitor communication and measure network performance from branch offices in San Francisco and Texas to the data center in North Virginia, which combination of test type and target is the most appropriate?
Answer: A
Explanation:
According to the Designing and Implementing Enterprise Network Assurance (300-445 ENNA) architecture, monitoring site-to-site connectivity between managed locations requires vantage points at both ends of the connection. In this scenario, the organization needs to measure performance between branch offices (San Francisco and Texas) and a central data center (North Virginia).
The most appropriate combination is using Enterprise Agents with the Agent-to-agent test type (Option C). Enterprise Agents are software probes deployed on infrastructure owned or controlled by the organization, such as switches or routers in the branch offices and servers in the data center. Unlike Agent-to-server tests, which only provide one-way metrics and approximate path data, an Agent-to-agent test provides bi-directional network metrics. This includes detailed throughput, packet loss, latency, and jitter measurements in both directions, which is critical for identifying asymmetric routing or link saturation that might affect application performance.
NEW QUESTION # 32
When configuring alert rules based on network conditions, which parameter is commonly monitored to assess TCP protocol behavior?
Answer: B
Explanation:
TCP protocol behavior is commonly monitored by assessing parameters such as packet loss, retransmission rates, and TCP window size to identify potential network congestion, performance degradation, or protocol-related issues, allowing network administrators to configure alert rules accordingly.
NEW QUESTION # 33
What are the different ways to deploy a ThousandEyes Agent in a Switch? (Choose all that apply)
Answer: C
NEW QUESTION # 34
An architect needs to analyze network path metrics from their internal network, specifically from the access layer to a cloud-hosted web server.1 Which ThousandEyes agent is most appropriate for this task?
Answer: C
Explanation:
In the framework ofDesigning and Implementing En8terprise Network Assurance (300-445 ENNA), selecting the correct agent type depends heavily on the vantage point required for the specific observation. For this scenario, the architect must collect metrics from theinternal network access layer-the point closest to where the users or devices reside within the corporate perimeter-towards a cloud-hosted destination.
TheEnterprise Agent(Option B) is the most appropriate choice because it is specifically designed to be deployed on infrastructure owned and managed by the organization. These agents are "inside-out" vantage points that can be installed directly onCisco Catalyst 9300 or 9400 Series switchesat the access layer using Docker containers. By deploying an Enterprise Agent at the access layer, the architect gains visibility into the entire network path, starting from the internal LAN, traversing the edge/WAN, and reaching into the cloud- hosted web server. This allows for the identification of issues such as local congestion, ISP peering problems, or cloud provider latency.
Other options do not meet the criteria:
* Synthetic Agent (Option A):This is a distractor term. All ThousandEyes agents (Cloud, Enterprise, and Endpoint) are synthetic agents because they all perform active synthetic testing.
* Cloud Agent (Option C):These are pre-deployed by Cisco in global ISP data centers and provide an
"outside-in" view.14While useful for monitoring public-facing availability, they cannot provide visibility into the internal network or the access layer of the organization.
* Endpoint Agent (Option D):While these are installed on end-user machines and provide a "user- centric" view, they are generally not used for infrastructure-level path analysis from the access layer switches themselves.
Thus, theEnterprise Agentis the definitive choice for monitoring from the access layer to the cloud.
NEW QUESTION # 35
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