Cisco Updated 300-445 Exam Questions and Answers by juliette

In theDesigning and Implementing Enterprise Network Assurance (300-445 ENNA)curriculum, the objective of modern network assurance is to bridge the gap between "visibility" and "action". When an organization requires an automated workflow to handle network performance anomalies, the most efficient architecture is the nativeServiceNow Integration(Option A). This integration is categorized as a "Custom-Built" or native integration within the ThousandEyes platform, designed specifically to facilitate the delivery of direct notifications into a ServiceNow account.

According to the ENNA implementation standards, the ThousandEyes ServiceNow integration utilizes theServiceNow Incident Managementmodule. When a predefined alert rule (such as a 5% packet loss threshold on a critical SaaS path) is violated, ThousandEyes triggers an event and immediately pushes the alert data to ServiceNow via an OAuth-authenticated connection. Within ServiceNow, this data is used to automatically generate anIncident, complete with relevant metadata such as the test name, agent location, and the specific metrics that triggered the violation. This automation eliminates the manual overhead of "copy-pasting" alert details from a monitoring dashboard into a ticketing system, thereby significantly reducing theMean Time to Identification (MTTI).

WhileCustom Webhooks(Option C) can achieve a similar result by sending JSON payloads to a REST API, they require additional development effort to parse the data on the receiver side. The native ServiceNow integration provides a pre-configured template that maps ThousandEyes alert fields directly to ServiceNow incident fields, offering a "one-click" setup experience that is preferred for enterprise-grade deployments. Options B and D are irrelevant for the specific goal of ITSM incident generation. Therefore, for direct ITSM notification and incident creation, the nativeServiceNow Integrationis the verified recommendation.

In theDesigning and Implementing Enterprise Network Assurance (300-445 ENNA)curriculum, understanding the visibility gap between the SD-WAN overlay and the transport underlay is a core competency. The provided exhibit illustrates a ThousandEyes Enterprise Agent deployed on aBranch Edge Routerperforming tests across two distinct paths:Internet(reaching a destination at 64.100.249.90) andMPLS(reaching a destination at 172.29.0.2).

According to the ENNA architecture guidelines, ThousandEyes is primarily utilized to provide hop-by-hop visibility into theunderlaynetwork. While SD-WAN controllers like vManage provide native monitoring for the overlay—the logical IPsec tunnels (Option B) that form the SD-WAN fabric—they often lack granular visibility into the physical service provider paths (the underlay) that carry those tunnels. The exhibit specifically highlights the agent probing the transport networks (Transport VPN0) directly, bypassing the overlay tunnels to measure the raw performance of the ISP and MPLS circuits.

By monitoring theunderlay(Option A), the engineer can identify if high latency or packet loss is caused by a specific hop within the service provider's infrastructure or at a peering point. This "underlay visibility" is critical for troubleshooting SD-WAN performance issues where the overlay may report a tunnel down, but the root cause lies in a BGP routing change or physical fiber cut in the provider network. ThousandEyes Enterprise Agents, natively integrated into Catalyst 8000 and ISR 4000 platforms, allow for this persistent underlay monitoring without additional hardware.

Overlay (Option C):While ThousandEyes can monitor overlay performance, the exhibit's focus on the raw IP addresses (Internet and MPLS) in the transport VPN indicates an underlay test.

IPsec/GRE Tunnels (Options B & D):These represent the transport mechanisms of the overlay. ThousandEyes probes the pathunderthese tunnels to ensure the transport health is sufficient to support the fabric.

In theDesigning and Implementing Enterprise Network Assurance (300-445 ENNA)curriculum, troubleshooting endpoint connectivity requires a systematic analysis of local device logs and network environment changes. According to the log message provided inExhibitthere was a specific timeout error when the agent attempted to reach the ThousandEyes backend. The logs explicitly state: Request to: wss://c1.eb.thousandeyes.com/relay/connect timed out: 12002: The operation timed out.

Since the endpoint was relocated to a new network utilizingstatic IP assignment, and other endpoints on the same network are functioning correctly, the issue is highly localized to this specific device's configuration. In a static IP environment, human error during the manual entry of the IP address, subnet mask, default gateway, or DNS server is a common root cause of connectivity failure. If the gateway is incorrect, the agent cannot reach the internet; if the DNS is incorrect, it cannot resolve c1.eb.thousandeyes.com. Therefore, the best way to bring the endpoint online is to verify the accuracy of theIP settingsand test direct connectivity to the ThousandEyes relay URL.

The alternative options do not address the technical evidence found in the logs:

Option A:Moving the device back is a regressive step that does not resolve the need for the device to function in its new location.

Option B:Reinstalling software is a "brute force" method that rarely fixes underlying network-layer misconfigurations like an incorrect static IP.

Option C:A timeout error (12002) indicates a persistent connectivity blockage that will not resolve itself without administrative intervention.

Checking the static IP credentials ensures the device has a valid path to the internet to establish its secure websocket (WSS) connection to the ThousandEyes platform.

In theDesigning and Implementing Enterprise Network Assurance (300-445 ENNA)architecture, the deployment of ThousandEyes Enterprise Agents on switching infrastructure is designed to be highly flexible, catering to different management styles and network scales. Modern Cisco switches, specifically theCatalyst 9300 and 9400 Series, support the execution of containerized applications directly on the switch's hardware through theCisco IOS XE Application Hostingframework.1

Application Hosting (Option A)refers to the manual method using the Cisco IOS XE Command Line Interface (CLI). An engineer can use app-hosting commands to install, configure, and manage the Docker-based Enterprise Agent.2This provides granular control over resource allocation and networking for the container.Catalyst Center (Option B)provides a GUI-driven, automated workflow to deploy agents at scale across an entire campus fabric.3It simplifies the lifecycle management by handling the installation and activation across multiple switches simultaneously. For switches acting as edge devices in an SD-WAN fabric,Catalyst SD-WAN Manager (Option C)orchestrates the deployment through centralized policies and templates, allowing the agent to be pushed as part of a device configuration. Finally, while theThousandEyes Portal (Option D)is the management plane for tests, it is also where the Docker image and Account Group Token are obtained for any of the aforementioned deployment methods.

Each method provides the same end result: an Enterprise Agent running "on-box" to provide deep visibility into the network path starting directly from the access or core layer. Therefore,All of the above(Option E) is the correct answer as it encompasses the manual, automated, and orchestrated methods available for switch-based deployment as per the 300-445 ENNA official guidelines.