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| Section | Objectives |
|---|---|
| Data Analysis | - Identify trends and anomalies
|
| Data Collection Implementation | - Configure data collection for network devices
|
| Platforms and Architecture | - Describe network assurance platforms
|
| Insights and Alerts | - Generate and interpret insights
|
The Designing and Implementing Enterprise Network Assurance (300-445) exam questions are the real, valid, and updated 300-445 Exam Questions that are specifically designed for quick and complete 300-445 exam preparation. With PassReview Designing and Implementing Enterprise Network Assurance (300-445) practice test questions you can start Cisco 300-445 exam preparation immediately.
NEW QUESTION # 83
Review the exhibits. Based on the evidence, which action is most likely to solve the issue?
Answer: B
NEW QUESTION # 84
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,C,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 # 85
Which RFC standardizes the concept of passive monitoring in network assurance?
Answer: A
Explanation:
RFC 7799 standardizes passive monitoring methodologies, providing guidelines for data collection without affecting network traffic.
NEW QUESTION # 86
What role does synthetic testing play in network assurance?
Answer: A
Explanation:
Synthetic testing plays a crucial role in network assurance by simulating user interactions with applications, enabling proactive monitoring and performance optimization.
NEW QUESTION # 87
Refer to the exhibit.
A network admin has been tasked with monitoring the IPv6 record and name server resolution times with different agents. Select the two actions that the engineer must take to meet the requirements.
Answer: B,D
Explanation:
According to theDesigning and Implementing Enterprise Network Assurance (300-445 ENNA) curriculum, DNS testing is a fundamental component of ensuring application availability and performance.
The ThousandEyes platform provides two primary types of DNS tests:DNS ServerandDNS Trace.
To satisfy the specific requirements of monitoringIPv6 recordsandname server resolution times, the engineer must utilize theDNS Server test. This test type is designed to measure the performance of specific DNS servers by querying them for particular resource records.
* Monitoring IPv6 Records:In the DNS system, IPv6 address records are known asAAAA records.
Therefore, to monitor the availability and resolution of IPv6 addresses for a domain, the engineer must create a DNS Server test and set the query type toAAAA(Option B).
* Monitoring Name Server Resolution Times:To measure how long it takes for a DNS server to return the authoritative name servers for a domain, the engineer must query forNS (Name Server) records.
By creating a DNS Server test targeting theNS record(Option D), the platform can provide granular metrics on the response time and availability of those specific records from the perspective of the selected agents.
DNS Trace tests(Options C and E) are less suitable for measuring specific resolutiontimesof a single server; instead, they are used to visualize the entire delegation path from the root servers down to the authoritative servers to identify where a "break" in the chain occurs. Furthermore, anA recordquery (Option A) only provides the IPv4 address, failing the requirement to monitor IPv6. By selectingDNS Servertests forAAAA andNSrecords, the administrator ensures they have the precise performance data needed to baseline and troubleshoot the organization's DNS health.
NEW QUESTION # 88
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