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

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

 The statement ‘D’ is used to assign the list of interfaces from the JSON response to the variable ‘interfaces’. This allows the script to iterate over each interface and print the IP addresses of all loopback interfaces.

 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 )

 The Cisco SD-WAN vManage Troubleshooting Dashboard APIs capture various details during troubleshooting, including the connections summary. This summary provides an overview of all control connections from the vManage NMS to the vSmart controllers, WAN Edge routers, and vBond orchestrators in the overlay network. It displays the status of these connections, which is crucial during a network outage to identify and troubleshoot the cause of the issue.

References := Automating Cisco Enterprise Solutions Official Cert Guide, Cisco SD-WAN vManage Help - Dashboard3, Cisco Catalyst SD-WAN Monitor and Maintain Configuration Guide

Zero Touch Provisioning (ZTP) is a method used to automate the process of configuring network devices without manual intervention. When a device is first powered on, it uses DHCP to obtain an IP address and other network settings, including the location of a TFTP server from which it can download its initial configuration. This allows devices to be deployed at scale with minimal effort, as they can automatically configure themselves as soon as they are connected to the network. References := (Automating Cisco Enterprise Solutions Official Cert Guide)

Synchronous calls to APIs are characterized by their blocking nature, meaning the process making the request must wait until it gets a reply before it can proceed with other tasks. This can add perceived latency to an application if there is a delay in receiving data. Synchronous APIs provide immediate feedback, which is essential for operations requiring instant confirmation and interaction4567. 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

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 )

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.

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

Graphical user interface, application Description automatically generated

The exhibit is a read-only YANG leaf ("ro vlan") therefore is classed as "state" date and not config data. As such the 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

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

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

References:

• Cisco DevNet - Intent APIs

In Cisco DNA Center Operational Tool API, the Command Runner section of the intent API is designed to retrieve keywords accepted by CLI and enables execution of read-only commands on network devices. This feature allows administrators to retrieve real-time configuration data from devices without making any changes, aiding in monitoring and troubleshooting tasks. 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

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)

 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 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 /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

 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 )

The correct ncclient method used to collect the running configuration of a Cisco IOS XE device that uses NETCONF is config=m.get_config(source='running'). This method retrieves the specified configuration (in this case, ‘running’) from the device using NETCONF. References: Automating Cisco Enterprise Solutions Official Cert Guide

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. 

Graphical user interface, application Description automatically generated

The location accuracy of a device using scanning APIs can be influenced by several factors. AP placement is crucial because it determines signal coverage and strength, which directly affects how accurately a device can be located. The amount of device antennas also plays a significant role; more antennas can provide more data points for triangulation, leading to improved location accuracy. 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

The correct code snippet for detecting a change in OSPF neighbors and displaying an alert message is Option C. This option includes a check for ‘OSPF-neighbor-state-change’ within the ‘Correlation Engine’ data returned by the API call. If this key exists and its value is not 0, indicating a state change has occurred, it prints out an alert message “OSPF neighbor change detected!” This logic correctly implements the required functionality.

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

• 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

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 )

To create a new network using the Meraki API, the correct HTTP action is POST. A POST request to the specified URL with the new organization ID and the required body parameters will create a new network and result in a 201 response code, indicating that the resource has been successfully created.

References := Automating Cisco Enterprise Solutions Official Cert Guide