4A0-AI1 Sample Questions Answers

location services are part of the NSP REST API, which provides a full list of NSP REST API service names, endpoints and URLs. Therefore, correct answer is A. REST Reference: https://www.nokia.com/networks/training/nsp/self-paced/programmable-network-automation/ https://documentation.nokia.com/cgi-bin/dbaccessfilename.cgi/3HE12075AAACTQZZA01_V1_NSP%2017.6%20API%20Programmer%20Guide.pdf

According to the NSP Network Services Platform Release 20.9 User Guide1, the attribute of the target-component that determines the component name displayed in the UI is i18n-text.

The i18n-text attribute specifies a key for a localized text string that is displayed as a label for this component in the UI. The actual text string is retrieved from a resource bundle file based on the user’s locale.

For example, if i18n-text is “Port Id”, then the UI will display “Port Id” as the component name.

 a Kafka topic is a channel where publishers (producers) publish data and where subscribers (consumers) receive data. A topic represents a stream of messages of a particular category. 

In Kafka, a topic represents a stream of messages of a particular category or type. Producers publish messages to a specific topic, and consumers subscribe to and read messages from topics. Brokers are responsible for managing topics and ensuring that messages are distributed efficiently across the cluster.

According to the Mistral Workflow Language (v2) website1, a workflow definition consists of several attributes that define its properties and behavior. The common workflow attributes are: name, description, type, input, output and vars1.

Apache FreeMarker is a templating language used to create dynamic webpages. It is designed to separate the configuration and data states, allowing the template to have a consistent look and feel across all webpages. FreeMarker allows the template to instantiate the data, allowing the template to be reused in different contexts. It does not allow communication between NSP applications or transport YANG data.

Ad-hoc actions are wrappers around existing system actions that allow for more flexibility in terms of what can be done. They are not default actions provided by Workflow Manager, nor are they special actions for NSP applications. Ad-hoc actions can be used by multiple workflows.

An Intent is the master configuration that is synchronized with the network configuration and is stored in the database as the source of truth. Intent Types define the type of Intent, such as a network service or a configuration change, while Metadata is used to store additional information about the Intent, such as its version or author. YANG modules are used to define the data model for a particular technology.

the input that is optional when using the std.ssh action is cmd. This parameter specifies the command to be executed on the remote server1. If this parameter is not provided, the action will only establish an SSH connection with the remote server and return its output1. The other parameters are required to authenticate and connect to the remote server.

The statement that best describes the Intent Manager application is: "It generates and validates the configuration of the network." Intent Manager is responsible for collecting the user's intent, verifying the user's input, and converting the user's intent into a device-specific configuration. It uses a high-level language to abstract the network complexity, enabling the network operator to define intent in simple terms. Once the intent is defined, Intent Manager automatically generates a device-specific configuration for each network element. It then validates the intent by checking the network's current state against the user's desired intent. If there is a mismatch, it will take corrective action to bring the network to the desired intent state.

Intent Manager to communicate with network elements that are not directly supported by NSP12. A generic mediator can use SNMP or other protocols to interact with network elements.

According to the Mistral Workflow Language (v2) documentation1, which is one of the technologies that can be used in a NSP workflow2, flow control attributes are used to define how a task behaves depending on its execution status. The valid flow control attributes are on-success, on-error, on-complete, and on-cancel1. Therefore, the correct answer is A.

a workflow can use environments to make it portable if the workflow needs to be executed on either a development or production lab. Environments are files that contain key-value pairs that can be used as input parameters for workflows1. Environments allow workflows to be executed with different settings without modifying the workflow definition1.

The HTTP methods that are supported by REST/RESTCONF are:

• OPTIONS: Used to retrieve the communication options available for a resource.
• GET: Used to retrieve a representation of a resource.
• PATCH: Used to apply a partial update to a resource.
• POST: Used to create a new resource or trigger a specific action.

The HTTP method TRACE is not supported by REST/RESTCONF.

According to the Nokia NSP Intent Manager Application Help2, Intent Manager has the following benefits:

• It allows programmable and flexible logic. You can use scripts to define how intents are translated into network commands and how they react to network events.
• It provides concepts for finding misalignments. You can use audit and synchronize functions to detect and resolve any discrepancies between intents and network states.
• It provides flexible capabilities for achieving high-level business goals. You can use intents to express complex network behaviors such as service protection, bandwidth optimization, or latency reduction.

Therefore, based on these sources12, the correct answer to your question is:

A. Allows the parallel execution of many workflows.

This is NOT a benefit of Intent Manager because workflows are not related to intents. Workflows are sequences of tasks that can be executed on NSP using Workflow Manager.

some of the benefits of virtualization are:

• Reduced capital and operating costs
• Better scalability
• Vendor agnostic
• Higher availability and resiliency
• Environmentally friendly

Virtualization enables decoupling of the software and hardware components, so that software can be deployed on any hardware platform without requiring the hardware to be specifically designed for the software. The other three options are all benefits of virtualization.

Software and hardware are tightly coupled is NOT a benefit of virtualization. Virtualization allows software to run independently of the hardware, enabling greater flexibility and scalability. This leads to reduced capital and operating costs, as well as vendor agnostic solutions.

According to the NSP Intent Manager Application Help1, an intent type consists of four components: general metadata, target, YANG model and script. The resources component is used to store files that are required by the script component1. Therefore, A. Framework files is NOT a category of files found in the intent-type resources directory.

The HTTP methods that are supported by REST/RESTCONF are:

• GET: Used to retrieve a representation of a resource.
• PUT: Used to replace a resource or create it if it does not exist.
• DELETE: Used to delete a resource.
• PATCH: Used to apply a partial update to a resource.

The HTTP method ADD is not a standard HTTP method and is not supported by REST/RESTCONF.

Workflow Manager is a tool that allows users to design and execute workflows for network automation using NSP actions and expression functions. The Workflow Manager supports data encoding/decoding formats such as JSON, CSV, XML and Base64. However, it does not support BER (Basic Encoding Rules), which is a format used for encoding data structures for transmission or storage. 

According to the Mistral Workflow Language (v2) documentation1, which is one of the technologies that can be used in a NSP workflow2, with-items is a task property that allows the action associated with a task to be run multiple times over a list of items1. The syntax for using with-items is:

task_name:

action:

input:

:<%item()%>

with-items:itemin

You need to replace , , and  with your desired values. You can also use other properties such as concurrency, retry, or count to control how many iterations are executed in parallel, how many times an iteration is retried if it fails, or how many times an iteration is executed respectively1.

Virtualization is not a characteristic of intent-based networking, but rather a technology that enables it. Virtualization is the process of creating virtual versions of physical resources, such as servers, storage, or networks1. Virtualization allows for more flexibility and scalability in network design and management, but does not imply any automation or intelligence.