Latest JN0-223 Exam Dumps Juniper Exam from Training Expert ActualPDF
Pass Juniper Automation and DevOps, Associate (JNCIA-DevOps) PDF Dumps | Recently Updated 68 Questions
The JN0-223 exam consists of sixty-five multiple-choice questions that cover various topics such as Juniper automation and DevOps concepts, automation tools, scripting languages, and automation frameworks. JN0-223 exam duration is ninety minutes, and candidates should score at least sixty-five percent to pass the exam. Automation and DevOps, Associate (JNCIA-DevOps) certification is valid for three years, and candidates can renew it by passing the recertification exam or by earning a higher-level certification.
NEW QUESTION # 11
Exhibit.
Referring to the exhibit, which statement about REST is correct?
- A. The device is configured to allow HTTP connections on port 3030.
- B. The device is configured to allow HTTPS connections on port 3443.
- C. The device is configured to allow only two simultaneous REST connections.
- D. The device is configured to allow connections from the REST API Explorer
Answer: B
NEW QUESTION # 12
Which process is responsible for XML automation requests?
- A. jsrpd
- B. jsd
- C. rpd
- D. mgd
Answer: D
Explanation:
The mgd (Management Daemon) process in Junos is responsible for handling XML automation requests. This daemon manages the configuration and operational commands received via NETCONF, which uses XML for data exchange. The mgd process parses the XML data and applies the necessary configuration or retrieves the requested information.
Option B is correct because mgd is the process that handles XML-based requests in Junos.
Options A (jsrpd), C (rpd), and D (jsd) are incorrect because they are responsible for different functions, such as routing protocols and services, not XML automation.
Supporting Reference:
Juniper Networks Management Daemon (mgd) Documentation: Provides an overview of the responsibilities of the mgd process, including handling XML requests.
NEW QUESTION # 13
Which feature is used in XML to ensure that all attributes and elements have unique names?
- A. namespace
- B. selectors
- C. XPath
- D. predicate
Answer: C
NEW QUESTION # 14
What is a valid JSON object?
- A. { ''vmx-1: 172.25.11.1''}
- B. ''hostname:vmx-1''
- C. { ''vmx-1'', ''172.25.11.1''}
- D. { ''hostname'' : ''vmx-1''}
Answer: D
NEW QUESTION # 15
Junos PyEZ is a microframework used to operate the Junos OS using which language?
- A. Puppet
- B. Ruby
- C. Python
- D. Chef
Answer: C
Explanation:
Reference: https://www.juniper.net/documentation/en_US/junos-pyez/topics/concept/junos- pyezoverview.html#:~:text=Junos%20PyEZ%20is%20a%20microframework,operating%20system%20 (Junos%
20OS).
NEW QUESTION # 16
Exhibit.
You have the configuration shown in the exhibit, but are unable to access the REST API Explorer.
Which configuration is necessary to solve this problem?
- A. Configure an IPv4 address on ge-0/0/0 0.
- B. Configure a secondary IPv6 address on ge-0/0/0.0.
- C. Configure the rest service to be active on port 80.
- D. Configure a firewall filter to explicitly permit SSH.
Answer: B
NEW QUESTION # 17
You are asked to write an on-box script that will be triggered when a specific interface on a Junos device goes down.
Which type of on-box script should you use to accomplish this task?
- A. event
- B. SNMP
- C. commit
- D. operation
Answer: A
Explanation:
Aneventscript is used to automate responses to system events in Junos, such as an interface going down.
These scripts are triggered automatically when a specified event occurs, making them suitable for tasks like monitoring interface status and executing actions when the status changes.
* Option B (event)is correct because event scripts are designed for reacting to system events like an interface going down.
* Option A (commit)is used for configuration changes,Option C (operation)is used for operational tasks, andOption D (SNMP)is not applicable in this context.
Supporting References:
* Juniper Networks Event Scripts Documentation:Details how event scripts are used to automate responses to specific system events in Junos
NEW QUESTION # 18
A REST API client uses which two HTTP methods to execute RPC requests on the server? (Choose two.)
- A. HEAD
- B. GET
- C. CONNECT
- D. POST
Answer: B,D
Explanation:
REST APIs use HTTP methods to perform different operations on resources. In the context of RPC (Remote Procedure Call) requests:
GET: This method is used to retrieve data from the server. In a REST API, it is commonly used to fetch information about resources, such as the current configuration or operational state.
POST: This method is used to send data to the server to create or update a resource. In the context of RPC, POST is often used to execute a procedure on the server that may result in the modification of a resource or triggering of an action.
Options B (HEAD) and D (CONNECT) are not typically used for executing RPC requests:
HEAD is similar to GET but only retrieves the headers, not the body of the response.
CONNECT is used to establish a tunnel to the server, primarily for SSL-encrypted communication, and is not commonly associated with RESTful RPC operations.
Supporting Reference:
Juniper Networks REST API Documentation: The documentation provides detailed information about the use of HTTP methods in Juniper's RESTful services.
"RESTful Web Services" by Leonard Richardson and Sam Ruby: This book explains the principles of REST and how different HTTP methods, particularly GET and POST, are used to interact with RESTful APIs.
NEW QUESTION # 19
Which two statements about the REST API are correct? (Choose two.)
- A. The REST API application is stateless.
- B. The TCP session state is maintained by the server.
- C. The TCP session state is maintained by the client
- D. The REST API application is stateful.
Answer: A,C
Explanation:
REST (Representational State Transfer) is an architectural style for designing networked applications, and its key principles include:
Statelessness (B): Each request from the client to the server must contain all the information needed to understand and process the request. The server does not store any session state between requests, meaning each request is independent and does not rely on previous ones.
TCP Session State (C): While REST itself is stateless, the underlying TCP connection's state, such as keeping the connection alive or managing retries, is handled by the client. The server does not retain information about the TCP connection beyond the processing of the individual request.
Options A and D are incorrect because they imply that the REST API is stateful, which contradicts the stateless nature of REST.
Reference:
REST API Design Principles: Describes the stateless nature of REST and the responsibility of clients in managing session state.
Web Development Documentation: Discusses how REST APIs operate, focusing on statelessness and client-server interaction.
NEW QUESTION # 20
Why is a REST API considered stateless?
- A. The client requests to the server do not include state information.
- B. No client context is stored on the server between requests.
- C. The state of the server is not important when making requests.
- D. The REST API is an international API.
Answer: A
NEW QUESTION # 21
Which two programming languages are used for Junos on-box scripting? (Choose two.)
- A. XSLT
- B. SLAX
- C. Ruby
- D. Perl
Answer: A,B
Explanation:
Junos on-box scripting supports the following programming languages:
SLAX (C): SLAX (Structured Language for XML) is a scripting language designed specifically for Junos devices. It allows for easy manipulation of XML data, making it ideal for creating Junos scripts that interact with device configurations.
XSLT (D): XSLT (Extensible Stylesheet Language Transformations) is another language used for transforming XML documents into other formats. It is commonly used in Junos for transforming XML data into different views or outputs.
Options A (Perl) and B (Ruby) are not used for Junos on-box scripting. While these languages are popular in other contexts, Junos scripting relies heavily on XML-based languages like SLAX and XSLT.
Reference:
Junos XML API and Scripting Guide: Describes the use of SLAX and XSLT for on-box scripting.
Juniper Networks Automation Documentation: Provides examples and best practices for using SLAX and XSLT in Junos scripting.
NEW QUESTION # 22
Which two statements are correct about using the Junos REST API? (Choose two.)
- A. It supports data In CSV format.
- B. It must use SSH for a connection.
- C. NETCONF is not supported.
- D. It is a simple configuration.
Answer: A,D
Explanation:
* A. It supports data in CSV format:
The Junos REST API supports multiple data formats for transferring information between systems, including XML, JSON, and CSV (Comma Separated Values). This flexibility allows for easier data parsing, especially in environments where structured data (like CSV) is a standard. CSV is often used for bulk data export or import and reporting purposes, making it an essential format for automation tasks involving external systems or large datasets.
Example Usage in REST API:
When using the Junos REST API, a user can request configuration or operational data and specify the response format (XML, JSON, or CSV). CSV is particularly useful when integrating Junos devices with systems that require easily readable, tabular formats.
Reference:
* D. It is a simple configuration:
The Junos REST API is designed to be relatively simple to configure. Once the REST API service is enabled on the Junos device, it can be accessed via HTTP or HTTPS, making it an easy entry point for automation and management tasks. Unlike more complex protocols (such as NETCONF), the REST API is lightweight and easier to use for simple configuration changes and retrieving operational data.
Configuration Example:
To enable the REST API, you can add the following configuration:
set system services rest http
set system services rest https
After enabling the service, API requests can be made to interact with the device for automation tasks, without needing the complexity of SSH or NETCONF configuration.
Why the Other Options Are Incorrect:
B . It must use SSH for a connection: This is incorrect. The Junos REST API uses HTTP or HTTPS for communication, not SSH. While SSH is commonly used for NETCONF, it is not required for REST API connections. REST APIs operate over standard web protocols.
C . NETCONF is not supported: This is incorrect. Junos supports both REST API and NETCONF for automation and configuration management. NETCONF is an XML-based protocol used for device configuration, which operates over SSH. The REST API and NETCONF can coexist on the same device, offering multiple avenues for automation.
Juniper Automation in DevOps Context: The simplicity and flexibility of the Junos REST API make it ideal for DevOps automation tasks. It allows teams to easily interact with Junos devices using lightweight RESTful methods, integrating with external systems through formats like CSV. The ease of configuration supports rapid deployment and scaling of automated management tasks.
Reference from Juniper Documentation:
Junos REST API Documentation
NEW QUESTION # 23
What are two important aspects of the DevOps culture? (Choose two.)
- A. people
- B. communication
- C. separation of duties
- D. use of specific tools
Answer: A,B
Explanation:
Two important aspects of the DevOps culture are:
* Communication (A): In a DevOps environment, continuous and effective communication between development, operations, and other stakeholders is crucial. It ensures that everyone is aligned, reduces misunderstandings, and facilitates faster and more efficient workflows.
* People (D): DevOps is as much about the people as it is about the processes and tools. The culture emphasizes collaboration, shared responsibility, and a mindset focused on continuous improvement.
Empowering people to work together across different disciplines is at the heart of DevOps.
Options B and C are not primary aspects of the DevOps culture. While tools are essential in implementing DevOps practices, the culture emphasizes communication and collaboration among people more than the use of specific tools or rigid separation of duties.
* DevOps Handbook: Discusses the cultural aspects of DevOps, with a focus on communication and people.
* DevOps Best Practices: Highlights the importance of fostering a culture that prioritizes collaboration and shared goals.
References:
NEW QUESTION # 24
Which two statements about NETCONF are true? (Choose two.)
- A. It uses the operations layer to commit the configuration of a Junos device.
- B. It uses the operations layer to lock the configuration of a Junos device.
- C. It uses the messages layer to lock the configuration of a Junos device.
- D. It uses the messages layer to commit the configuration of a Junos device.
Answer: A,B
Explanation:
NETCONF (Network Configuration Protocol) operates through different layers, with the operations layer being particularly important for managing configurations:
* Operations Layer (A & D): This layer is responsible for actions like locking and committing the configuration on a Junos device. The lock operation prevents other sessions from modifying the configuration, and the commit operation applies the configuration changes to the device.
Options B and Care incorrect because the messages layer handles the communication aspects, such as exchanging data between the client and server, not performing configuration operations like locking and committing.
* IETF RFC 6241 (NETCONF): Describes the protocol layers and their functions, with a focus on the operations layer.
* Juniper Networks NETCONF Documentation: Provides insights into how NETCONF operations are managed in Junos References:
NEW QUESTION # 25
Which type of data is contained in the key of the JSON object shown in the exhibit?
- A. string
- B. name
- C. integer
- D. interface
Answer: D
NEW QUESTION # 26
Exhibit.
Which type of data maps to the position key shown in the exhibit?
- A. string
- B. position
- C. integer
- D. Boolean
Answer: B
NEW QUESTION # 27
What are two examples of XPath axes? (Choose two.)
- A. sibling
- B. grandchild
- C. parent
- D. grandparent
Answer: A,C
Explanation:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/junos-script- automation-xpathoverview.html
NEW QUESTION # 28
What is the correct sequence for Python script execution?
- A. The byte code is executed in runtime, the code is interpreted, and then the code is translated to byte code.
- B. The code is translated to byte code, the code is interpreted, and then the byte code is executed in runtime.
- C. The code is translated to byte code, the byte code is executed in runtime, and then the code is interpreted.
- D. The code is interpreted, the code is translated to byte code, and then the byte code is executed in runtime.
Answer: D
Explanation:
Python follows a specific execution flow when a script is run:
* The code is interpreted:Python is an interpreted language, meaning that the Python interpreter reads the code line by line. When a Python script is executed, the interpreter first reads the source code.
* The code is translated to bytecode:After interpreting the source code, Python translates it into bytecode. Bytecode is an intermediate representation of the source code that is portable and efficient for execution by the Python Virtual Machine (PVM).
* The bytecode is executed in runtime:Finally, thePython Virtual Machine (PVM)executes the bytecode. The PVM is a part of the Python runtime environment, responsible for interpreting the bytecode into machine-specific instructions for execution.
Hence, the correct sequence is:interpreted # translated to bytecode # bytecode executed in runtime.
Why the Other Options Are Incorrect:
* Options A, C, and D present an incorrect order of the script execution process, especially in how bytecode is generated and executed.
References:
* Python's documentation on the interpreter and its execution model explains this standard process.
NEW QUESTION # 29
Which two statements are correct about a Python dictionary data type? (Choose two.)
- A. The data stored in a dictionary data type is sequenced and indexed.
- B. The data stored in a dictionary data type is not sequenced or indexed.
- C. The data contained in a dictionary data type cannot be removed once the dictionary has been created.
- D. The data contained in a dictionary data type is a key/value pair.
Answer: B,D
Explanation:
A Python dictionary is a data type that stores data in the form of key/value pairs. It has the following characteristics:
* Key/Value Pair (C): Each entry in a dictionary is a pair consisting of a unique key and a value. The key is used to access the corresponding value.
* Not Sequenced or Indexed (D): Unlike lists or tuples, dictionaries do not maintain order for their entries (in versions prior to Python 3.7). Even though Python 3.7+ maintains insertion order, dictionaries are not considered indexed or sequenced in the traditional sense like lists, where elements are accessed via positional index.
Option A is incorrectbecause dictionary entries can be added, modified, or removed after the dictionary is created.Option B is incorrectbecause dictionaries are not accessed by a numeric index but rather by their keys.
* Python Official Documentation: Details the nature of dictionaries, including their mutability and key
/value structure.
* Python Data Structures Guide: Explains dictionary operations and characteristics.
References:
NEW QUESTION # 30
Which code format is a valid example of an HTTPS get-interface-information method using the default port?
- A. https://I72.25.11.1:3443/get-interface-information
- B. https://172.25.11.1:3443/api/get-interface-information
- C. https://172.25.il.!:3443/rpc/get-interface-information
- D. https://172.25.11.1/api/get-interface-information:3443
Answer: C
NEW QUESTION # 31
Which two statements about the REST API are correct? (Choose two.)
- A. The REST API application is stateless.
- B. The TCP session state is maintained by the server.
- C. The TCP session state is maintained by the client
- D. The REST API application is stateful.
Answer: A,C
Explanation:
REST (Representational State Transfer) is an architectural style for designing networked applications, and its key principles include:
* Statelessness (B): Each request from the client to the server must contain all the information needed to understand and process the request. The server does not store any session state between requests, meaning each request is independent and does not rely on previous ones.
* TCP Session State (C): While REST itself is stateless, the underlying TCP connection's state, such as keeping the connection alive or managing retries, is handled by the client. The server does not retain information about the TCP connection beyond the processing of the individual request.
Options A and D are incorrect because they imply that the REST API is stateful, which contradicts the stateless nature of REST.
* REST API Design Principles: Describes the stateless nature of REST and the responsibility of clients in managing session state.
* Web Development Documentation: Discusses how REST APIs operate, focusing on statelessness and client-server interaction.
References:
NEW QUESTION # 32
Given the <name> username </name> XML code, what is the information between the opening and closing tags called?
- A. element node
- B. name node
- C. text node
- D. data node
Answer: A
Explanation:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/junos-script- automation-xmloverview.html
https://www.ibm.com/docs/fi/db2-for-zos/11?topic=nodes-text
NEW QUESTION # 33
Which two statements are correct about Junose PyEZ Tables and Views? (Choose two.)
- A. PyEZ Tables and Views are defined using YAML.
- B. PyEZ Tables and Views are defined using CSV.
- C. The Juniper_Junos_config module enables the use of PyEZ Tables and Views.
- D. The juniper_junos_table module enables the use of PyEZ Tables and Views.
Answer: A,C
NEW QUESTION # 34
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Juniper JN0-223 (Automation and DevOps, Associate (JNCIA-DevOps)) Exam is an entry-level certification exam that is designed to validate the skills and knowledge of individuals in network automation and DevOps. JN0-223 exam covers a range of topics related to network automation and DevOps, and the certification can help individuals to demonstrate their proficiency in these essential skills. The JNCIA-DevOps certification is also a prerequisite for the Juniper Networks Certified Specialist Automation and DevOps (JNCIS-DevOps) certification, which is the next level in the Juniper automation and DevOps certification track.
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