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NEW QUESTION # 41
What is the primary function of DNS tests configured in network assurance tools?
Answer: D
Explanation:
The primary function of DNS tests configured in network assurance tools is to resolve domain names to IP addresses, simulate DNS queries and responses, and monitor DNS server performance to ensure domain name resolution reliability, identify DNS-related issues, and troubleshoot DNS resolution errors.
NEW QUESTION # 42
What advantage does the integration of ThousandEyes with Cisco technologies offer for troubleshooting?
Answer: B
NEW QUESTION # 43
Drag and Drop Question
An engineer is deploying a multitest template for end users. Requirements include establishing a single TCP session from the Cisco ThousandEyes Endpoint Agent to the target, testing secure authentication, and TCP path trace. Drag and drop the options from the bottom onto the boxes in the test configuration template.
Answer:
Explanation:
Explanation:
A SaaS Scheduled HTTP Server test provides the single TCP session from the ThousandEyes Endpoint Agent to the target application; pairing it with a SaaS Scheduled Network test adds corresponding network measurements.
Setting the Protocol to "Prefer SACK" (SSL) ensures the session is established using HTTPS.
"Prefer TCP (ICMP) Fallback" uses TCP as the probing method, which enables TCP-based path trace to the target.
Using NTLM as the HTTP authentication scheme verifies secure user authentication against the target application.
NEW QUESTION # 44
An engineer needs to create a test that requires authentication configuration to monitor an API. The test must send a POST request with client credentials parameters to get a token. The token then needs to be sent out on a GET request to be authorized to get the resource.
What must be done to meet the requirements? (Choose two)
Answer: B,D
Explanation:
In the Designing and Implementing Enterprise Network Assurance (300-445 ENNA) curriculum, monitoring modern APIs often requires handling complex authentication flows, such as OAuth 2.0 with specific client credential parameters. The provided exhibit illustrates the HTTP Authentication options available within a standard HTTP Server test: None, Basic, NTLM, Kerberos, and OAuth.
According to the ENNA implementation standards, while the HTTP Server test type supports OAuth (Option C), its native implementation is limited. Specifically, it is designed to use a pre-existing token or a simple token refresh flow; it does not support the injection of custom parameters in the initial POST request required to obtain a token in many enterprise client-credential scenarios. Basic and NTLM (Options A and B) are legacy protocols that rely on simple username/password headers and cannot facilitate the multi-step token exchange process described.
To fulfill the requirement of a two-step flow (POST for token, followed by GET for resource), engineers must use more flexible test types:
* Transaction scripts (Option D): These allow the engineer to write custom JavaScript using the ThousandEyes transaction library to programmatically handle the POST request, parse the resulting JSON token, and then pass that token into the subsequent GET request ' s header.
* API tests (Option E): These are purpose-built for API monitoring and natively support the definition of variables and multi-step requests where the output of one call (the token) serves as the input for the next.
By utilizing these advanced test types, the engineer can successfully navigate complex authentication requirements that the standard HTTP Server test cannot accommodate.
NEW QUESTION # 45
What is an important consideration when choosing a time period for collecting data to establish a baseline for interface utilization on a critical network link?
Answer: B
Explanation:
Establishing an accurate baseline is a cornerstone of theDesigning and Implementing Enterprise Network Assurance (300-445 ENNA)methodology. A baseline must represent the "typical" behavior of the network across its standard operating cycle to be useful for anomaly detection and capacity planning. When monitoring interface utilization on a critical link, it is vital tocapture both peak and off-peak traffic patterns (Option C).
Most enterprise networks exhibit cyclical traffic patterns, often referred to as "diurnal" cycles, where utilization spikes during business hours (peak) and drops significantly at night or on weekends (off-peak). If an engineer only collects data during the lowest volume period (Option A), the baseline will be unrealistically low, leading to "false positive" alerts when normal business traffic returns. Conversely, only capturing peak data might hide background synchronization tasks or backup windows that occur during off-hours.
By selecting a representative time period-typically one full week or a month-the engineer ensures the baseline accounts for variations such as Monday morning "logon storms," mid-week steady states, and weekend maintenance. This comprehensive view allows the assurance platform (such asCisco Catalyst CenterorThousandEyes) to calculate a standard deviation and establish dynamic thresholds. If utilization deviates from these historically representative norms, the system can trigger an alert based on a true anomaly rather than a predictable daily surge. Aligning with a financial year (Option B) is irrelevant to technical performance, and limiting the data (Option D) compromises the baseline's statistical validity.
NEW QUESTION # 46
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