Cisco 300-635 Automating Cisco Data Center Solutions (DCAUTO) Exam Practice Test

The correct command to execute a Python script within the Guest Shell container on a Cisco NX-OS switch is guestshell run, followed by the path to the Python script. In this case, the script deltacounters.py is located in /home/admin/, so the full command would be guestshell run python /home/admin/deltacounter.py ethernet1/1. This command initiates the Guest Shell, which is a secure, Linux-based environment designed to run custom Linux applications, including Python scripts, on Cisco NX-OS platforms. By specifying python after guestshell run, we are instructing Guest Shell to use its Python interpreter to execute the given script with ‘ethernet1/1’ as an argument passed to it.

References:

Cisco Guest Shell Configuration Guide

Implementing Automation for Cisco Data Center Solutions (DCAUI)

The Python script uses the ACI Cobra SDK to interact with Cisco’s Application Centric Infrastructure (ACI). It logs into the APIC and retrieves a list of all application profiles (‘fvAp’), then prints out their distinguished names (dn), which uniquely identify each application profile within the ACI fabric. References:

Cisco Developer Network

Cisco Learning Network

 In order to integrate a Kubernetes environment with Cisco ACI, the Kubernetes manifests typically need to include references to ACI End Point Groups (EPGs). This allows for the application components within Kubernetes to be associated with the networking policies defined in ACI, ensuring consistent network policy application across both environments. References: Since I can’t provide direct links to external sources, I recommend checking Cisco’s official documentation and training materials for the most accurate and up-to-date information.

REST, or Representational State Transfer, is an architectural style that is characterized by its stateless nature, meaning each request from a client to a server must contain all the information needed to understand and complete the request without relying on any stored context on the server. This increases reliability and scalability. However, ‘stateful’ is not a guiding principle of REST; instead, it is ‘statelessness’ that is a core principle. The other main guiding principles include a uniform interface, cacheability, and a layered system

The ACI CNI plug-in is designed to provide intent-based networking for containers, allowing them to be managed from the same interface as VMs and bare-metal servers. This integration facilitates consistent policy enforcement, automation, and visibility across all types of workloads. References: Cisco ACI documentation and training materials.

In Cisco’s ACI, the Management Information Tree (MIT) uses several attributes to uniquely identify managed objects. ‘RN’ stands for Relative Name, which is the name of an object within its parent’s context. ‘DN’ stands for Distinguished Name, which is a unique name that includes the full path in the MIT hierarchy.

Cisco ACI Documentation

 The code snippet is intended to configure VLAN 10 in Cisco UCS. After creating the VLAN object and adding it with handle.add_mo(newvlan), it is essential to commit the changes to the UCS Manager for them to take effect. This is done by invoking handle.commit(). Without this step, the changes will not be saved, and VLAN 10 will not be configured.

Cisco UCS Manager API Reference Guide

 The Cisco UCS PowerTool is a PowerShell module that provides an interface to Cisco Unified Computing System (UCS) Manager API. To initiate a connection to the Cisco UCS Manager, the ‘Connect-Ucs’ cmdlet is used. This cmdlet requires parameters such as the name of the UCS domain (in this case, ‘myucsm.example.com’) and credentials stored in a variable (here represented as ‘$ucsm_creds’). The credentials are typically created beforehand using the ‘New-Object’ cmdlet with a PSCredential object type, which securely stores the username and password required for authentication. References := Cisco UCS PowerTool Suite - PowerShell Libraries for Cisco UCS Manager

Cisco UCS Director custom workflow tasks are scripted in Cloupia Script. This scripting language is specific to Cisco and is used for automating tasks across various components of data center operations.

References:

Cisco UCS Director Scripting Guide

The Cisco Data Center Network Manager (DCNM) REST API provides a robust platform for automating various tasks in the data center. Two of its capabilities include:

A: The DCNM REST API uses the dcnm-token header for requests authentication after initial basic authentication. This token-based authentication is more secure as it reduces the need to repeatedly send credentials over the network.

E: The DCNM REST API is organized into different management areas such as Classic LAN, LAN Fabric, Media Controller, and SAN Management. This categorization allows for targeted automation and management within specific domains of the data center network.

References :=

Implementing Automation for Cisco Data Center Solutions (DCAUI) v1.0

Cisco Data Center Network Manager documentation

The -brief command in the Cisco bigmuddy-network-telemetry-collector is used to display only the message headers. This command provides a concise view of the telemetry data streamed from XR routers, which is useful for quick inspections or debugging purposes without the need for full message details1.

References := Cisco Code Exchange, VCEGuide

The Python code in the exhibit is using the Cobra SDK to interact with Cisco’s Application Centric Infrastructure (ACI). The code performs the following actions:

It logs into the ACI fabric using credentials provided.

It creates a new Virtual Routing and Forwarding (VRF) instance named “DevNet_VRF” within a tenant named “DevNet_Tenant”.

It creates a new Bridge Domain (BD) named “DevNet_BD” within the same tenant and associates it with the previously created VRF.

It defines a subnet within this Bridge Domain with the network address “10.10.10.1/24”, which is labeled as “DevNet_Subnet”.

An Application Profile (AppProfile) named “DevNet_App” is created within the tenant.

An Endpoint Group (EPG) named “DevNet_EPG” is created and associated with both the AppProfile (“DevNet_App”) and BridgeDomain (“DevNet_BD”).

Therefore, options B and C are correct: B. This action creates an EPG called “DevNet_EPG” inside an AppProfile called “DevNet_App” located in an ACI tenant called “DevNet_Tenant”. The EPG is linked to a BridgeDomain called “DevNet_BD”. C. This action creates a subnet called “DevNet_Subnet” inside VRF “DevNet_VRF” located in an ACI tenant called “DevNet_Tenant” and sets its network address to “10.10.10.1/24”.

References :=For more information on automating Cisco Data Center Solutions, one can refer to Cisco’s official training course for Implementing Automation for Cisco Data Center Solutions (DCAUI): Cisco Training Course

 The DCNM API is REST-based, allowing third parties to test and develop application software. It supports a wide range of operations that can also be performed using the DCNM GUI, which uses these REST APIs to render the GUI itself. This means that the same tasks available through the API can be accessed and managed through the graphical user interface, providing flexibility in how network administrators interact with DCNM23.

References := Cisco DCNM REST API Guide, Cisco Community

 The ucs_vlans module is part of the Ansible collection for Cisco UCS (Unified Computing System) and is used to manage VLANs on Cisco UCS Manager. When working with Cisco UCS, VLANs are a crucial aspect of network segmentation and management. The ucs_vlans module allows users to configure VLAN settings such as the VLAN ID, name, and state. It also supports advanced features like fabric configuration and multicast policies.

References:

Ansible Documentation for Cisco UCS modules1.

Cisco’s official training and certifications page, which may offer updated and detailed courses on implementing automation for Cisco Data Center solutions

aci_tenant

tenant : MyCompany

state: present

The Python code Vrf(fvTenant(uniMo, 'CustA'), 'CustA_VRF) creates a VRF in an ACI tenant using the Cobra SDK. The Vrf class is instantiated with a parent fvTenant object and the name of the VRF.

To enable the REST API browser within Cisco UCS Director, a user must edit their profile to enable developer options. This action provides access to the REST API browser, which is a powerful tool for automating tasks and operations within the Cisco UCS Director environment.

References := Implementing Automation for Cisco Data Center Solutions (DCAUI)

The API Inspector in Cisco’s APIC is used to capture and display API requests made by the APIC GUI. It helps users learn or identify the sequence of API calls for specific operations performed in the APIC GUI. This tool is useful for developers who want to automate tasks using RESTful APIs by providing them with exact API calls that can be replicated in scripts or applications. References :=

Implementing Automation for Cisco Data Center Solutions (DCAUI) course

Cluster Isolation (B) and Namespace Isolation (E) are Kubernetes features that allow partitioning of cluster resources and application isolation. VM Isolation (A) is not specific to Kubernetes with SCCM plugin deployment, and Process Isolation (D) is not an application isolation type in this context. References: Cisco ACI APIC CLI Configuration

conf t

Event manager applet link monitor

Event syslog pattern “IF_UP”

Action 1 cli command “source cdp_description.py”

Exit

 The network bootstrap program used by Cisco NX-OS for iPXE is called iPXE-POAP (Power-On Auto Provisioning). This process assists in automating the installation and configuration of Nexus switches. POAP automates the process of upgrading software images and installing configuration files on switches that are being deployed in the network for the first time. References: Cisco official documentation and training materials.