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

https://developer.cisco.com/meraki/api-v0/create-organization-network/

https://developer.cisco.com/docs/dna-center/2-3-5/sync-devices/

Operation Id: syncDevices

Description: Sync the devices provided as input

curl -L --request PUT \

--url /dna/intent/api/v1/network-device \

--header ' Accept: application/json ' \

--header ' Content-Type: ' \

--data ' { " type " : " COMPUTE_DEVICE " } '

AND

Operation Id: syncDevicesNetworkDevice

Description: Synchronizes the devices. If forceSync param is false (default) then the sync would run in normal priority thread. If forceSync param is true then the sync would run in high priority thread if available, else the sync will fail. Result can be seen in the child task of each device.

curl -L --request PUT \

--url /dna/intent/api/v1/network-device/sync \

--header ' Accept: application/json ' \

--header ' Content-Type: ' \

--data ' {} '

 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

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 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 )

YANG-push telemetry data offers several benefits over traditional data collection methods such as SNMP polling. One significant advantage is that it uses less bandwidth because it sends updates only when there’s a change in subscribed data, rather than repeatedly polling all devices at regular intervals regardless of changes. This makes it more efficient and reduces unnecessary network traffic. Additionally, YANG-push telemetry scales better than SNMP because it can handle more frequent updates from a large number of devices without overwhelming the network or management systems.  References  := ( Automating Cisco Enterprise Solutions Official Cert Guide )

 Synchronous API calls are blocking operations which means the code will not execute any further until a response is received from the server. This can add perceived latency to an application because it has to wait for the data to be received before continuing (Option C). Furthermore, synchronous calls block until a response is returned from the server (Option D), which means that during this time, no other operations can be performed. This is in contrast to asynchronous calls, which allow other processes to run while waiting for the API call to return.  References  := ( Automating Cisco Enterprise Solutions Official Cert Guide )

 To automate the creation of a network on the Meraki dashboard that supports only wired network connections, the type ‘switch’ needs to be added to the API. This is because ‘switch’ refers to network switches, which are hardware devices that connect devices on a computer network by using packet switching to receive, process, and forward data to the destination device. In contrast, ‘wireless’ would refer to Wi-Fi connections, ‘appliance’ could refer to security appliances or other types of network equipment not specifically related to wired connections, and ‘systemsManager’ is related to mobile device management.  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 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

The Meraki Location Scanning API is designed to provide location-based services. Mapping and wayfinding solutions are built using this API to help users navigate physical spaces, making options B and E the correct answers.  References  := ( Automating Cisco Enterprise Solutions Official Cert Guide )

To insert the project into Git using the account python_programmer, one would need to initialize the local directory as a Git repository, add files to it, commit those files with an appropriate message, add a remote repository URL pointing to where the repository should be pushed on GitHub under python_programmer’s account, and finally push the changes up to that remote repository. Option A follows this process correctly: ‘git init’ initializes the local directory as a Git repository; ‘git add “device_status.py”’ stages changes; ‘git commit -m “Initial Revision”’ commits staged changes with message; ‘git remote add origin  6 ’ adds new remote repo; ‘git push -u origin master’ pushes committed changes up to GitHub.  References : = Automating Cisco Enterprise Solutions Official Cert Guide

Graphical user interface, text, application Description automatically generated

The Ansible playbook is designed to reset configurations on Cisco IOS XE routers. It includes tasks to remove Loopback1 and Loopback2 interfaces. The condition  when: " ' pod-2 ' in ansible_net_hostname "  ensures that Loopback2 is only removed from routers with ‘pod-2’ in their hostname. Since pod-11 and pod-12 do not meet this condition, only Loopback1 is removed from them, which leads to the removal of IPv4 and IPv6 addresses for the Loopback1 interface on these routers.  References : Automating Cisco Enterprise Solutions Official Cert Guide

Table Description automatically generated with medium confidence

 To replace device configuration using RESTCONF with the Python library Requests, one would use the  put()  method. The  put()  method in HTTP is used to update an existing resource or create it if it does not exist. In RESTCONF, which operates over HTTP, using  put()  will replace the entire target configuration datastore with the payload specified in the request.  References : Automating Cisco Enterprise Solutions Official Cert Guide

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

Site health : Monitoring the health and performance of network sites.

Client health : Assessing the health of connected clients (end-user devices).

References :

Cisco DevNet - Intent APIs

 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

The error is due to Command Runner in Cisco DNA Center being designed to support only the execution of ‘show’ commands or other read-only commands. When an engineer tries to execute configuration commands or any commands that are not read-only, they will be blocklisted as these are not supported by Command Runner. This ensures that Command Runner is used strictly for retrieving information without making any configuration changes to devices.  References  := (Automating Cisco Enterprise Solutions Official Cert Guide)

The provided exhibit likely shows a POST request setup in an API testing tool like Postman, with JSON formatted data specifying commands for configuring a network device interface. These commands are not supported by Command Runner as it does not allow configuration changes, only read operations.

The JSON instance in the exhibit represents a structured data format for configuring an interface on a network device. The correct answer is “interface-configurations” because the JSON structure starts with “Cisco-IOS-XR-ifmgr-cfg:interface-configurations,” indicating that it pertains to interface configurations within Cisco IOS XR.  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

To create a Cisco Meraki network, the REST API endpoint that should be used is “POST /organizations/{organizationId}/networks”. This POST request is used to create a new network under an organization specified by the {organizationId}. The body of the request would typically include parameters such as name, type, and timezone among others.  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)

 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

Python virtual environments are a tool used to create isolated Python environments, each with its own set of dependencies. This isolation is beneficial for several reasons:

D : Virtual environments allow developers to create a Python environment quickly for testing and debugging purposes. This is because each virtual environment can have its own set of dependencies, which may be different from those installed globally or in other virtual environments.  This isolation helps ensure that the environment reflects the production environment as closely as possible, which is crucial for accurate testing and debugging 1 2 .

E : They enable the creation of an isolated Python environment with module dependencies. This means that the dependencies installed in a virtual environment do not affect the system-wide Python installation or other virtual environments.  This isolation prevents conflicts between project dependencies and allows for more precise control over the environment in which your code runs 1 2 .

References :

Automating Cisco Enterprise Solutions Official Cert Guide

Real Python’s " Python Virtual Environments: A Primer " 1

Dataquest’s " A Complete Guide to Python Virtual Environments "

An HTTP 429 status code indicates that too many requests have been sent in a given amount of time (“rate limiting”). In this context, receiving an HTTP 429 error message from the Meraki cloud after executing a script to add descriptions to every switch port suggests that:

B. The rate limit of the Cisco Meraki API is exceeded.

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

The YANG module tree diagram represents the data model for network configuration and state data used by management protocols like NETCONF and RESTCONF. In this diagram, containers are denoted by curly braces  {}  and represent groupings of related data within the model. The three containers identified in the image are “interface,” “statistics,” and “discontinuity-time,” which organize related configuration or state information.

References : Automating Cisco Enterprise Solutions Official Cert Guide

 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

 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 exhibit is a read-only YANG leaf ( " ro vlan " ) therefore is classed as " state " date and not config data. As such the < get > statement is what you need to use to interact with this particular YANG model. Reference documentation: https://blogs.cisco.com/developer/ask-hank-yang-leaves