Unique Top-selling JN0-223 Exams - New 2025 Juniper Pratice Exam
JNCIA-DevOps Dumps JN0-223 Exam for Full Questions - Exam Study Guide
Juniper JN0-223 exam is a 90-minute exam that consists of 65 multiple-choice questions. JN0-223 exam is designed to test the knowledge and skills of individuals in automation and DevOps. JN0-223 exam is available in multiple languages and can be taken online or in person at a testing center. The passing score for the exam is 65%.
The JN0-223 certification exam is a comprehensive exam that covers a range of topics related to automation and DevOps. JN0-223 exam includes questions related to Junos automation tools, Python scripting, NETCONF, REST APIs, and DevOps practices. JN0-223 exam is designed to test the candidate's ability to automate Junos devices using various automation tools, develop scripts using Python, and implement DevOps practices to improve network agility and reliability.
NEW QUESTION # 29
Which two statements about NETCONF are correct? (Choose two.)
- A. The default port for NETCONF is port 930.
- B. NETCONF can use the default SSH port.
- C. NETCONF cannot use the default SSH port.
- D. The default port for NETCONF is port 830.
Answer: B,D
Explanation:
NETCONF (Network Configuration Protocol) is used for network device management and can operate over SSH. The following are true about NETCONF:
Default Port 830 (B): By default, NETCONF uses port 830 for communication over SSH. This is the standard port reserved for NETCONF sessions.
Use of Default SSH Port (D): NETCONF can also operate over the standard SSH port (port 22) if configured to do so. This allows flexibility in network management scenarios where port 830 might not be available or used.
Options A and C are incorrect because they refer to incorrect or non-applicable port numbers for NETCONF.
Reference:
IETF RFC 6241: Specifies the use of NETCONF over SSH, including port details.
Juniper Networks NETCONF Documentation: Discusses the configuration and operation of NETCONF on Junos devices, including port usage.
NEW QUESTION # 30
Junos PyEZ is a microframework used to operate the Junos OS using which language?
- A. Chef
- B. Python
- C. Puppet
- D. Ruby
Answer: B
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 # 31
Which process is responsible for XML automation requests?
- A. jsrpd
- B. rpd
- C. mgd
- D. jsd
Answer: C
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 # 32
Which two statements about XML schema definition (XSD) files are correct? (Choose two.)
- A. An XSD file is not an XML document.
- B. XSD files define all the elements in an XML document and the document XML hierarchy.
- C. Every XML document must have an XSD file defined for it.
- D. XSD files ensure that everyone working with the XML document uses a common set of tags.
Answer: B,D
Explanation:
XML Schema Definition (XSD) files are used to define the structure and data types of an XML document.
They ensure that the XML document adheres to a specific structure by defining the allowed elements, attributes, and their data types, thereby enforcing a consistent format.
* Option Ais correct because XSD files define the elements, attributes, and structure (hierarchy) of an XML document.
* Option Dis correct because XSD files provide a standardized format, ensuring that all parties working with the XML document use the same set of tags and structure.
* Option B (Every XML document must have an XSD file defined for it)is incorrect; not every XML document requires an XSD file, although it's beneficial for validation.
* Option C (An XSD file is not an XML document)is incorrect because XSD files themselves are written in XML.
Supporting References:
* W3C XML Schema Definition (XSD) Documentation:Explains the purpose and structure of XSD files, including their role in defining XML document schemas.
NEW QUESTION # 33
Exhibit.
Referring to the exhibit, which statement about REST is correct?
- A. The device is configured to allow only two simultaneous REST connections.
- B. The device is configured to allow HTTP connections on port 3030.
- C. The device is configured to allow HTTPS connections on port 3443.
- D. The device is configured to allow connections from the REST API Explorer
Answer: C
NEW QUESTION # 34
Which two statements about the Junos PyEZ configuration module are correct? (Choose two )
- A. The configuration module does not support loading a rescue configuration
- B. PyEZ does not support performing an exclusive lock on the configuration database.
- C. The lock() method can be used to lock the configuration database.
- D. The configuration module supports loading a rescue configuration
Answer: C,D
NEW QUESTION # 35
Which development model is the classic approach to software development?
- A. Waterfall
- B. Scrum
- C. Kanban
- D. Lean
Answer: A
NEW QUESTION # 36
Which two statements about XML schema definition (XSD) files are correct? (Choose two.)
- A. An XSD file is not an XML document.
- B. XSD files define all the elements in an XML document and the document XML hierarchy.
- C. Every XML document must have an XSD file defined for it.
- D. XSD files ensure that everyone working with the XML document uses a common set of tags.
Answer: B,D
Explanation:
XML Schema Definition (XSD) files are used to define the structure and data types of an XML document. They ensure that the XML document adheres to a specific structure by defining the allowed elements, attributes, and their data types, thereby enforcing a consistent format.
Option A is correct because XSD files define the elements, attributes, and structure (hierarchy) of an XML document.
Option D is correct because XSD files provide a standardized format, ensuring that all parties working with the XML document use the same set of tags and structure.
Option B (Every XML document must have an XSD file defined for it) is incorrect; not every XML document requires an XSD file, although it's beneficial for validation.
Option C (An XSD file is not an XML document) is incorrect because XSD files themselves are written in XML.
Supporting Reference:
W3C XML Schema Definition (XSD) Documentation: Explains the purpose and structure of XSD files, including their role in defining XML document schemas.
NEW QUESTION # 37
Which two PyEZ object methods are included by default when using a Python context manager? (Choose two.)
- A. pdiff() and diff()
- B. |load() and commit ()
- C. lock () and unlock (>
- D. open() and close()
Answer: C,D
Explanation:
When using a Python context manager with Junos PyEZ, two key methods are automatically included:
* open()andclose(): These methods are used to establish and terminate a connection to a Junos device.
When you use a context manager (thewithstatement),open()is called when entering the block, andclose() is called when exiting, ensuring the connection is properly managed.
* lock()andunlock(): These methods are used to lock the configuration database to prevent other users from making changes while you are working on it. When using a context manager,lock()is called at the start of the block, andunlock()is called at the end, ensuring safe configuration changes.
Supporting References:
* Junos PyEZ Documentation:The documentation explains how context managers work in PyEZ, including the automatic invocation ofopen(),close(),lock(), andunlock()methods.
NEW QUESTION # 38
Exhibit.
What is the purpose of the G character shown in the exhibit?
- A. The G sign is a JSON object that holds XML elements from the Junos configuration segment.
- B. The 0 sign is a JSON object that holds XML attributes from the Junos configuration segment.
- C. The e sign is a JSON array that holds XML elements from the Junos configuration segment.
- D. The 0 sign is a JSON array that holds Xf.1L attributes from the Junos configuration segment.
Answer: D
NEW QUESTION # 39
You are a programmer currently developing code on a Linux device. You want to start the Python interactive interpreter (shell) from the command prompt. Which command must be used to accomplish this task?
- A. bash$ pip
- B. bash$ sh
- C. bash$ python
- D. bash$ ./_init_.py
Answer: D
NEW QUESTION # 40
Which two statements are valid regarding Junos automation? (Choose two.)
- A. The mgd process handles JET API requests.
- B. The jsd process handles XML API calls.
- C. The mod process handles XML API calls.
- D. The jsd process handles JET API requests.
Answer: B,D
Explanation:
In Junos automation, several processes handle API requests, and understanding which process handles what is crucial:
* jsd Process:
* XML API Calls (A): Thejsdprocess is responsible for handling XML API calls, which are a significant part of Junos automation. XML API allows for structured and standardized communication with Junos devices, enabling automation scripts to query and configure devices.
* JET API Requests (C): Thejsdprocess also handles JET (Junos Extension Toolkit) API requests.
JET provides a more modern, programmable interface for interacting with Junos OS, andjsdis the process that manages these interactions.
* mgd Process(Incorrect Option):
* Not for JET API Requests: Themgdprocess handles general management operations, such as CLI commands and managing the configuration database, but it does not handle JET API requests. That role is fulfilled byjsd.
* mod Process(Incorrect Option):
* Not for XML API Calls: Themodprocess deals with managing chassis components and is not involved in handling XML API calls.
* Juniper Networks JET and XML API Documentation: Describes the roles ofjsdin handling both XML and JET API requests.
* Junos Automation and DevOps Documentation: Provides insights into how different processes interact with Junos APIs.
References:
NEW QUESTION # 41
Which two statements about Ansible are true? (Choose two.)
- A. By default, Ansible core modules use NETCONF to connect to the remote host.
- B. Ansible uses an agentless architecture.
- C. By default, Ansible playbooks are executed locally.
- D. Ansible modules only execute a change if required -
Answer: A,B
Explanation:
Reference: https://www.juniper.net/documentation/en_US/junos-ansible/topics/concept/junos- ansibleoverview.html#:~:text=Ansible%20uses%20an%20agentless%20architecture,software%20on
%20the%20managed%20nodes.&text=Thus%2C%20Ansible%20users%20can%20get,of%20Python%
20to%20use% 20Ansible
NEW QUESTION # 42
Which two statements are correct about the Junos REST API Explorer? (Choose two.)
- A. The REST API Explorer supports both GET and POST calls.
- B. The REST API Explorer returns data only in XML format.
- C. The REST API Explorer is enabled by default on all Junos devices.
- D. The REST API Explorer supports multiple RPC calls.
Answer: A,D
Explanation:
The Junos REST API Explorer provides an interactive environment to explore and execute REST API calls. The correct statements are:
Supports GET and POST Calls (C): The REST API Explorer allows users to make both GET and POST requests, enabling retrieval and submission of data to the Junos device.
Supports Multiple RPC Calls (D): The REST API Explorer can execute multiple RPC (Remote Procedure Call) commands, allowing a wide range of operations to be performed directly through the interface.
Option A is incorrect because the REST API Explorer is not enabled by default; it must be enabled manually. Option B is incorrect because the REST API Explorer returns data in both XML and JSON formats, not just XML.
Reference:
Junos REST API Explorer Documentation: Provides details on the supported operations and how to use the Explorer for different types of requests.
Juniper Networks Documentation: Covers the setup and usage of the REST API Explorer.
NEW QUESTION # 43
Which character is used to separate multiple parameters in a single REST API call?
- A. &
- B. ?
- C. #
- D. =
Answer: A
Explanation:
Reference: https://www.juniper.net/documentation/en_US/junos-space-sdk/13.1/apiref/ com.juniper.junos_space.sdk.help/html/reference/Commonbehav.html
NEW QUESTION # 44
Which two statements are correct about a Python list data type? (Choose two.)
- A. The data contained in a list data type is not sequenced or indexed.
- B. The data contained in a list data type can be modified.
- C. The data contained in a list data type cannot be modified.
- D. The data contained in a list data type is sequenced and indexed starting from 0.
Answer: B,D
Explanation:
Python lists have the following characteristics:
* Modifiable Data (A): Lists are mutable, meaning you can change, add, or remove elements after the list has been created.
* Sequenced and Indexed (B): Lists maintain the order of their elements and are indexed starting from 0.
This means you can access elements by their position in the list.
Option C is incorrectbecause lists are mutable, allowing modifications.Option D is incorrectbecause lists are indeed sequenced and indexed, unlike dictionaries.
* Python Official Documentation: Covers the properties of lists, including mutability and indexing.
* Python Data Structures Guide: Explains list operations and how to manipulate them.
References:
NEW QUESTION # 45
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. commit
- B. operation
- C. SNMP
- D. event
Answer: D
Explanation:
An event script 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, and Option D (SNMP) is not applicable in this context.
Supporting Reference:
Juniper Networks Event Scripts Documentation: Details how event scripts are used to automate responses to specific system events in Junos
NEW QUESTION # 46
A REST API client uses which two HTTP methods to execute RPC requests on the server? (Choose two.)
- A. HEAD
- B. CONNECT
- C. POST
- D. GET
Answer: C,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 # 47
You are asked to use the REST API to retrieve interface configuration information from your Junos device.
You decide to use a cURL HTTP GET command to retrieve this information.
In this scenario, which statement is correct?
- A. The request is handled by the mod process runningon the Junos device.
- B. The request is handled by the isd process runningon the Junos device
- C. The request is handled by the isrpd process runningon the Junos device.
- D. The request is handled by the rpd process runningon the Junos device.
Answer: C
Explanation:
When using the REST API on a Junos device, theisrpd(Integrated Service Routing Process Daemon) process is responsible for handling REST API requests. This process listens for incoming HTTP requests and processes them accordingly, including retrieving interface configuration information when a GET request is made.
* Option Bis correct because theisrpdprocess handles the REST API requests on a Junos device.
* Options A (mod process), C (rpd process), and D (isd process)are incorrect in this context as they either do not exist or serve different purposes on a Junos device.
Supporting References:
* Juniper Networks REST API Documentation:Provides insights into how REST API requests are managed and processed by theisrpdprocess on Junos devices.
NEW QUESTION # 48
Which statement about element nodes is correct?
- A. Only a single root element node is allowed
- B. Only the root element node can contain other element nodes
- C. Element nodes cannot be nested in other element nodes
- D. Element nodes only consist of a single line of code
Answer: A
Explanation:
https://en.wikipedia.org/wiki/Root_element#:~:text=Each%20XML%20document%20has%20exactly, is%20the%20element.
NEW QUESTION # 49
What are two examples of XPath axes? (Choose two.)
- A. grandparent
- B. grandchild
- C. parent
- D. sibling
Answer: C,D
Explanation:
Reference: https://www.juniper.net/documentation/en_US/junos/topics/concept/junos-script- automation-xpathoverview.html
NEW QUESTION # 50
Which two statements are correct about the Junos REST API Explorer? (Choose two.)
- A. The REST API Explorer supports both GET and POST calls.
- B. TheREST API Explorer is enabled bydefault on all Junos devices.
- C. The REST API Explorer returns data only in XML format.
- D. The REST API Explorer supports multiple RPC calls.
Answer: A,D
Explanation:
The Junos REST API Explorer provides an interactive environment to explore and execute REST API calls.
The correct statements are:
* Supports GET and POST Calls (C): The REST API Explorer allows users to make both GET and POST requests, enabling retrieval and submission of data to the Junos device.
* Supports Multiple RPC Calls (D): The REST API Explorer can execute multiple RPC (Remote Procedure Call) commands, allowing a wide range of operations to be performed directly through the interface.
Option A is incorrectbecause the REST API Explorer is not enabled by default; it must be enabled manually.
Option B is incorrectbecause the REST API Explorer returns data in both XML and JSON formats, not just XML.
* Junos REST API Explorer Documentation: Provides details on the supported operations and how to use the Explorer for different types of requests.
* Juniper Networks Documentation: Covers the setup and usage of the REST API Explorer.
References:
NEW QUESTION # 51
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