300-435 Automating Cisco Enterprise Solutions (ENAUTO) Questions and Answers

The Cisco SD-WAN manage certificate management API is capable of installing certificates on a vSmart controller device. The vSmart controller plays a pivotal role in establishing secure connections within an SD-WAN architecture by managing security policies and traffic flow throughout the network. References: Automating Cisco Enterprise Solutions Official Cert Guide

 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 Cisco DNA Center Intent API communicates in the northbound direction.
• Northbound APIs are used to expose functionality and data from the controller (such as Cisco DNA Center) to external applications or services.

References:

• Cisco DevNet - Intent APIs

The dampening period setting used for an on-change publication in YANG-push versus Openconfig is ‘0’. This setting indicates that there is no dampening period, and changes are reported immediately. 

 To create a new network called “Test” using the Meraki API, the correct URI is the one that uses the POST method to the endpoint that includes the organization ID but not a specific network ID. Therefore, option D is the correct answer. References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

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)

 Webhooks generated by Cisco DNA Center use REST calls to deliver notifications. Specifically, they utilize JSON payloads delivered via POST requests. These webhooks are essential for real-time event handling and automation.

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 )

 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

 To create a new feature in a separate branch and check out the new version, the correct commands are needed. Option B provides the correct sequence of Git commands to achieve this task. The command git checkout -b feature creates a new branch named “feature” and switches to it immediately, which is exactly what is required when starting development on a new feature while keeping the production release intact in the “master” branch. References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

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 )

 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

 Zero-Touch Provisioning (ZTP) is a method for automating the configuration of network devices upon initial power-up using DHCP and TFTP. It minimizes manual intervention, streamlining the deployment process and reducing errors. References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

The NETCONF statement type represented by “±-rw address* [ip]” is a ‘list’. In YANG, which is the data modeling language used by NETCONF, a ‘list’ statement defines a sequence of list entries. Each entry is like a row in a table. The “+” indicates that this is a configuration data node, “rw” means read-write, and the asterisk (*) signifies that multiple address entries are allowed (hence it’s a list), with “ip” being the key for each unique entry in the list. References: Automating Cisco Enterprise Solutions Official Cert Guide

Graphical user interface, application Description automatically generated

 When using the Cisco Meraki API to create a network, two mandatory parameters are “type” and “organizationId”. The ‘type’ parameter specifies what kind of network is being created (e.g., wireless, switch, security appliance), while ‘organizationId’ links the new network to a specific organization within Meraki’s system. References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

In Ansible, the ‘state’ parameter is used to specify the desired state of a resource on the target system. For configuring an NTP server on a Cisco IOS XE device, ‘state: present’ ensures that the NTP server with the specified IP address is configured on the device. The options ‘true’, ‘started’, and ‘installed’ are not valid states for this type of resource in Ansible. The ‘present’ state is used to ensure that an entity exists, which in this case refers to making sure that the NTP server configuration exists without authentication and logging.

References: Automating Cisco Enterprise Solutions Official Cert Guide

 Software-defined networks (SDNs) offer several advantages over traditional networks; one key advantage is their distributed management architecture. Unlike traditional networks where the control plane (which makes decisions about where traffic should be sent) and the data plane (which actually sends packets according to those decisions) are coupled on each networking device leading to potential single points of failure, SDNs separate these planes. This separation allows for centralized control with a global view of the network state while maintaining local data forwarding at each switch. This architecture enhances resilience as it can dynamically adjust and reroute traffic around failed nodes or congested paths without manual intervention. References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

 In a software-defined network (SDN), the control plane and data plane are decoupled, allowing for more flexible network management and control. This is in contrast to traditional networks where the control plane and data plane are tightly coupled (A), which is not a foundation of SDN. SDNs are indeed built upon a robust software stack (B), which allows for centralized management and dynamic resource allocation. Traditional networks often require device by device-level configurations ©, but this is not a foundation of SDN; instead, SDNs aim to simplify network management through automation. Automated through expressed intent to a software controller (D) is another key feature of SDN, as it enables the network to be programmatically configured and managed through higher-level policies rather than manual device-specific configurations. Lastly, requiring significant physical hardware resources (E) does not distinguish an SDN from a traditional network as both can be resource-intensive depending on their scale and function. 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

To access the ‘status’ indicated on line 16 in a Python dictionary assigned to variable “d”, you would navigate through the nested structure of the JSON data. Starting with the key ‘data’, which points to a list, you select the first item using [0]. Within this item, ‘statusList’ is a key pointing to another list, and selecting the first item using [0] leads to a dictionary where ‘status’ is the key to the desired value ‘normal’.

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

To retrieve information about a rebooted device using the Cisco SD-WAN vManage Administration APIs, you need to construct a REST call with the HTTP GET method. The base URL is https://vmanage-ip-address:8443/dataservice/device/reboots , where you replace vmanage-ip-address with the actual IP address of your vManage instance. The query parameter deviceId is appended to the URL with the value 260faff9-2d31-4312-cf96-143b46db0211, which is the unique identifier of the device. References := (Automating Cisco Enterprise Solutions Official Cert Guide)

The Cisco SD-WAN vManage Certificate Management API allows administrators to create certificate signing requests (CSRs). These CSRs can be submitted to a Certificate Authority (CA) for signing, which is essential for secure communication within the SD-WAN deployment. References: = ( Automating Cisco Enterprise Solutions Official Cert Guide )

The ENAUTO exam tests knowledge of implementing enterprise automated solutions, including programming concepts, Python programming, APIs, controllers, and automation tools. Without the specific Python code from the exhibit, I can’t provide the expected output. Generally, Python code in the context of ENAUTO might involve interacting with APIs or automating network configurations. The output would depend on the code’s function, such as retrieving data from an API or configuring network devices. References := Automating Cisco Enterprise Solutions Official Cert Guide

The script in Option C is a Python code snippet that uses the requests library to make an API call to bind a network to a template. The URL specifies the API endpoint for Meraki, which is used to manage networks. The payload includes the ‘configTemplateId’ parameter with an example ID value, and ‘autoBind’ set to True, indicating that the network should be bound automatically to the provided template ID. The headers specify that the content type for this request is JSON. Finally, a PUT request is made using these parameters, and the response is printed out. 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

The correct Python snippet to receive a Meraki webhook request is the one that uses the @app.route decorator with the correct endpoint and accepts the POST method since webhooks typically send data using HTTP POST requests. In this case, Option D is set up to accept POST requests which align with how webhooks operate. References := ( Automating Cisco Enterprise Solutions Official Cert Guide )

To create a Python script that pulls inventory for Cisco SD-WAN Viptela devices using the Viptela library, the correct action is:

• C: from viptela.viptela import Viptela. This import statement is used to import the Viptela class from the viptela.viptela module, which is part of the Python SDK for Cisco Viptela vManage. This SDK allows for interaction with Cisco SD-WAN Viptela devices through various API calls, enabling the automation of tasks such as pulling inventory data1.

References:

• CiscoDevNet/python-viptela: Cisco Viptela vManage Python CLI/SDK on GitHub

 Cisco IOS XE Software supports two main data modeling languages for its network programmability interface: RESTCONF and NETCONF. RESTCONF provides an API that uses HTTP methods for a programmatic interface over HTTP/HTTPS web services with support for both JSON and XML data formats. On the other hand, NETCONF is a protocol defined by the IETF that also provides a programmatic interface but only supports XML as its data format. Therefore, the statement that RESTCONF supports JSON and XML while NETCONF supports only XML is true. References: Automating Cisco Enterprise Solutions Official Cert Guide

The difference between OpenConfig and native YANG data models lies in their development and purpose:

• D: Native models are developed by vendors and are specific to their platforms. They are designed to integrate features or configurations that are relevant only to that vendor’s platform. Native models, being vendor-specific, provide the most detailed and granular control over the vendor’s devices1.

OpenConfig models, on the other hand, are developed by a collaborative group of network operators and are intended to be vendor-neutral. They aim to provide a more standardized model that can be used across different vendors’ equipment, focusing on the needs of the operators rather than the specific capabilities of the devices1.

References:

• Cisco Blogs on YANG models1
• CBT Nuggets on Native YANG models2
• Introduction to YANG - LTRSDN-2260