Pass the Cisco CCNP Enterprise | Cisco Certified DevNet Professional 300-435 Questions and answers with ValidTests

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

 Developing an application in a Python virtual environment allows for isolation from other Python projects. This means that the dependencies, Python versions, and libraries for one project will not interfere with those of another, ensuring a clean and controlled development environment.

References := Automating Cisco Enterprise Solutions Official Cert Guide

The Cisco SD-WAN vManage Certificate Management API is primarily used for certificate-related operations within the SD-WAN fabric. The correct purpose of using this API is:

A: To generate a Certificate Signing Request (CSR). The CSR is a request sent from an applicant to a certificate authority to apply for a digital identity certificate. It contains information that will be included in the certificate, such as the applicant’s public key and organization details. Once the CSR is generated, it can be signed by a Certificate Authority (CA) to create a certificate1.

References:

Cisco Catalyst SD-WAN CloudOps - Certificate Management1

Cisco SD-WAN API documentation2

Understand the Web Certificate For vManage - Cisco

 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 )

 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 )

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.

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 get_config method from the ncclient library is used to retrieve the running configuration from a Cisco IOS XE device using NETCONF. The ‘running’ parameter specifies that the running configuration should be collected. 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:

Ansible is an open-source automation tool that works across various platforms, including network devices, servers, and cloud services.

It uses a declarative language (YAML) to define tasks, making it independent of the underlying device or operating system.

Ansible playbooks can be written once and applied consistently to different devices, regardless of their specific characteristics.

It does not require any modules of software except SSH to be loaded on the network device:

Ansible communicates with network devices (including Cisco IOS XE devices) over SSH.

Unlike some other automation tools, Ansible does not require additional software or agents to be installed on the network devices.

This simplicity and lightweight approach make Ansible an attractive choice for network automation.

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:

Ansible uses a declarative approach, where users define the desired state of the system (tasks) rather than specifying how to achieve that state (procedural steps).

Playbooks written in YAML are device-agnostic and can be applied to various platforms.

Ansible modules provide abstractions for specific tasks (e.g., configuring interfaces, managing VLANs), allowing consistent automation across different devices.

It does not require any modules of software except SSH to be loaded on the network device:

Ansible communicates with network devices using SSH (Secure Shell).

No additional software or agents need to be installed on the network devices.

This simplicity minimizes the impact on the devices and ensures compatibility with a wide range of network equipment.

References:

Automating Cisco Enterprise Solutions Official Cert Guide

Ansible Documentation

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 debugging12.

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 runs12.

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"