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Cisco 300-445 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Data Analysis: This domain encompasses diagnosing network issues like packet loss, congestion, routing, and jitter, plus end-device problems. It includes analyzing web application performance and identifying security threats such as DDoS attacks, DNS hijacking, and BGP hijacking.
Topic 2
  • Insights and Alerts: This domain addresses configuring alert rules based on network conditions and end-user experience factors. It covers selecting metrics for stakeholders, validating alerts, and recommending network optimization for capacity planning.
Topic 3
  • Platforms and Architecture: This domain covers understanding monitoring agent types and placement, active versus passive monitoring, and ThousandEyes WAN Insights. It addresses Cisco platform integrations, metric baselines, and selecting appropriate integration methods and assurance platforms based on business requirements.
Topic 4
  • Data Collection Implementation: This domain focuses on deploying enterprise and endpoint agents across infrastructure and end-user devices. It covers configuring network, DNS, voice, web, and endpoint tests using ThousandEyes and Meraki Insights, along with implementing synthetic web tests and authentication methods.

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Cisco Designing and Implementing Enterprise Network Assurance Sample Questions (Q86-Q91):

NEW QUESTION # 86
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: A,B,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 # 87
What is the purpose of setting a metric baseline in network assurance?

Answer: C

Explanation:
Setting a metric baseline helps in identifying anomalies by providing a reference point for normal network behavior, enabling the detection of deviations.


NEW QUESTION # 88
When determining the optimal location for deploying network agents, what factor is crucial for effective data collection?

Answer: D

Explanation:
Placing agents near critical network infrastructure ensures effective data collection and monitoring in network assurance.


NEW QUESTION # 89
Refer to the exhibit. For over an hour during the workday, users trying to join Webex meetings experienced significant issues joining and creating meeting invites. What is a reason for this issue?

Answer: A

Explanation:
The waterfall view shows HTTP 502 errors returned from webex.com.
All network phases (DNS, Connect, SSL, Send, Receive) are healthy, meaning the network path is not the cause.
A 502 response indicates a server-side application problem, confirming that the Webex application backend was generating errors during the affected period.


NEW QUESTION # 90
Refer to the exhibit.

Refer to the exhibit. Which issue occurred in the stream?

Answer: A


NEW QUESTION # 91
......

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