300-435 Sample Questions Answers

https://developer.cisco.com/docs/dna-center/#!device-provisioning/goal

The primary function of the Cisco SD-WAN vManage Certificate Management API is to install signed certificates on network devices. This process is crucial for establishing trusted communications between devices managed via vManage. References := (Automating Cisco Enterprise Solutions Official Cert Guide)

 To remove a device from the network ‘ENAUTO’ using Meraki APIs, the engineer must send an HTTP DELETE request to the Meraki API endpoint for device removal. The correct line of code to be added should specify the DELETE method, the URL for the API endpoint, and include headers that typically contain authentication information. Option B is correct because it uses requests.request('DELETE', url, headers=headers) which specifies the DELETE method and includes both the URL and necessary headers. References: Automating Cisco Enterprise Solutions Official Cert Guide

 MQTT is a lightweight messaging protocol that operates on a publish-subscribe model, allowing clients to subscribe to topics and receive messages sent to those topics by any client. It is designed for connections with remote locations where a small code footprint is required or network bandwidth is limited.

• The Cisco DNA Center API provides access to various network assurance features, including:

References:

• Cisco DevNet - Intent APIs

 RPC (Remote Procedure Call) API calls have the following characteristics:

• Parameters can be passed to the calls: RPC allows you to pass parameters to a remote function or service. This enables you to send specific data or instructions to the remote device.
• They call a single function or service: RPC is used to invoke a specific function or service on a remote device. Unlike REST APIs, which operate on resources and have multiple endpoints, RPC calls are more focused on invoking a specific action.

References:

• Implementing Automation for Cisco Enterprise Solutions (ENAUI) v1.2
• Automating Cisco Enterprise Solutions Official Cert Guide
• Cisco Learning Network - Enterprise Networking Training Videos

This API endpoint is used to retrieve detailed information about issues detected by Cisco DNA Center, including the impacted hosts and suggested actions for resolution. It provides a comprehensive view of the network issues, which is essential for troubleshooting.

References: The ENAUTO certification emphasizes the importance of understanding APIs and their role in network automation and programmability

To access the hostname from the JSON data assigned to the variable “d”, one must navigate through the nested dictionaries and lists. The correct syntax in Python for accessing a dictionary is using square brackets with the key as a string. Therefore, ‘d[“data”]’ accesses the value associated with the key “data”, which is a list. ‘[0]’ accesses the first item in that list, which is another dictionary. Finally, ‘[“host-name”]’ retrieves the value associated with “host-name” from that dictionary. References: ( Automating Cisco Enterprise Solutions Official Cert Guide )

The YANG module defines a structure for network interfaces, including elements such as “name,” “address,” “netmask,” and “subnet.” The valid XML instance must adhere to this structure. Option A presents an XML instance that correctly reflects the hierarchy and elements specified in the YANG module, with appropriate namespace declarations and values for each element that are consistent with their definitions in the YANG model.

References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

Zero Touch Provisioning (ZTP) is the solution used for automating the configuration of a device when it is first powered on. ZTP utilizes DHCP to obtain an IP address and TFTP to download the initial configuration file, automating the provisioning process without manual intervention.

References := Automating Cisco Enterprise Solutions Official Cert Guide

To ensure that the consumer receives the telemetry data, it is crucial to define the destination where the telemetry data should be sent. This is accomplished by configuring the IP address of the receiver. Without this information, even if the Cisco IOS XE device accepts the configuration commands for a static telemetry subscription, it will not know the destination for the data, resulting in the consumer not receiving any telemetry data. References: Automating Cisco Enterprise Solutions Official Cert Guide

MV Sense MQTT API has the capability to request and subscribe to historical, current, or real-time data. This allows applications to receive updates about what’s happening in an environment monitored by Meraki MV smart cameras. References: Automating Cisco Enterprise Solutions Official Cert Guide

 In Ansible, the state parameter is used to define the desired state of a resource on the remote device. The options typically include “present” or “absent,” indicating whether the resource should exist or not. In this context, “present” is used to ensure that the VRFs defined in the local_vrfs variable are configured on the target device. Therefore, the string that completes the code for configuring VRF information using a local_vrfs variable is “present.” References: = Automating Cisco Enterprise Solutions Official Cert Guide

The command boot ipxe forever switch 1 configures a Cisco IOS XE device to persistently attempt to boot using iPXE via DHCP until it successfully loads an image. References: (Automating Cisco Enterprise Solutions Official Cert Guide)

• It is a device-independent method for automation and can be used with any type of device or operating system:
• It does not require any modules of software except SSH to be loaded on the network device:

Comprehensive and Detailed Step by Step Explanation:

• It is a device-independent method for automation and can be used with any type of device or operating system:
• It does not require any modules of software except SSH to be loaded on the network device:

References:

• Automating Cisco Enterprise Solutions Official Cert Guide
• Ansible Documentation

It can be filtered using the searchBy query and it can be: MAC Address or Device Name value or UUID of the network device https://developer.cisco.com/docs/dna-center/#!get-device-detail

 Native YANG models are specific to a vendor’s platform, incorporating proprietary features, whereas OpenConfig models are vendor-neutral and created for interoperable use across different platforms.

 The two Netmiko methods used to configure a device are send_config_set() and send_config_from_file(). The method send_config_set() is used to send configuration commands to a network device in an interactive session. This can be done as part of an automated script or manually entered commands. On the other hand, send_config_from_file() allows for sending configurations from a file which can be useful for larger configurations or standard config deployments across multiple devices. References: Automating Cisco Enterprise Solutions Official Cert Guide

 To attach a device template in Cisco SD-WAN, you must issue a POST call to initiate the attach action. This is the first step in the process. After initiating the attach action, you need to monitor the status of the action. For this, you issue a “monitor device action status” GET API request with the process ID. The process ID is used to track the status of the attach action until it is completed.

References := Automating Cisco Enterprise Solutions Official Cert Guide, SD-WAN 

The MV Sense API provides various endpoints for different types of data. The endpoint that provides LUX level, which is a measure of light intensity, is option A. References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

When making an HTTP GET call to obtain site health from Cisco DNA Centre, the JSON response includes various health indicators. The clientHealthAverage is a key metric that represents the average health of clients connected to the site, which can include both wired and wireless clients. This metric provides a general overview of the client health status within the site. On the other hand, overallBadDevices is another important metric that indicates the number of devices that are in a ‘bad’ state, which could be due to issues like high utilization, errors, or other factors affecting their performance. These two metrics are crucial for administrators to quickly assess the health of the site and identify areas that may require attention or troubleshooting.

References := Health Monitoring - Cisco Catalyst Center 2.3.7 - Cisco DevNet (Automating Cisco Enterprise Solutions Official Cert Guide)

 In the given RESTCONF GET request response, ‘static-routes’ is referenced as a container within the XML format response from a Cisco IOS XE device. A container in YANG data modeling language groups together related data nodes that are used in network configuration or state data. References: ( Automating Cisco Enterprise Solutions Official Cert Guide )

 In NETCONF telemetry subscriptions with Cisco IOS XE devices, the correct XML tag to complete the subscription is “period”. This tag defines the interval in milliseconds at which the telemetry data will be collected and sent. The “period” tag is used to set a fixed time interval for data collection, as opposed to other options like “frequency” which would imply a rate of occurrence or “cadence” which refers to the flow or rhythm of events. References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

To remove an administrator from a Meraki network using an API call, the correct URI is “DELETE https://api/meraki.com/api/v0/organizations/ /admins/”. This DELETE request removes the specified admin identified by from the organization identified by . References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

 When adding a device to a site using the Cisco DNA Center Sites API, you need to know the site identifier. If you only have the site name, you can retrieve the site identifier by making an API call to /dna/intent/api/v1/site. This call will provide you with the necessary information to properly add the device to the network.

References:

• Automating Cisco Enterprise Solutions Official Cert Guide

Graphical user interface, application Description automatically generated

• The /dna/intent/api/v1/issues API request provides information about network issues detected by Cisco DNA Center.
• It includes details about the issue, impacted hosts, and suggested actions for resolution.

References:

• Cisco DevNet - Intent APIs

 To create a Meraki webhook Python script that sends a message to Webex Teams, the programmer needs to configure the Webex Teams access token and the webhook server secret. The access token is necessary for authenticating with the Webex Teams API, allowing the script to send messages on behalf of a user or bot. The webhook server secret is used to secure communication between Meraki and the receiving server, ensuring that messages are not tampered with during transit. References: Automating Cisco Enterprise Solutions Official Cert Guide