Updated Nov 06, 2025 Verified Pass JN0-223 Exam in First Attempt Guaranteed
Free JN0-223 Sample Questions and 100% Cover Real Exam Questions (Updated 68 Questions)
NEW QUESTION # 12
You must use Junos PyEZ to configure unique IP addresses on individual machines.
Which two features willpermit this requirement? (Choose). Ian SCP module
- A. a Jinja2 template
- B. a YAML data file
- C. an SCP module
- D. a BSON data file
Answer: A,B
Explanation:
To configure unique IP addresses on individual machines using Junos PyEZ, you can use the following features:
* YAML Data File (C): YAML files are used to store configuration data in a human-readable format.
They are often used in combination with Jinja2 templates to provide the data necessary for template rendering.
* Jinja2 Template (D): Jinja2 is a templating engine for Python that allows you to create dynamic templates. When used with Junos PyEZ, a Jinja2 template can be filled with data (such as IP addresses from a YAML file) to generate configuration snippets that are applied to different devices.
Options A (SCP module) and B (BSON data file)are not typically used with Junos PyEZ for this purpose.
* Junos PyEZ Documentation: Discusses the use of YAML files and Jinja2 templates for generating configurations.
* Jinja2 Templating Documentation: Provides details on how to create and use templates in Python scripts.
References:
NEW QUESTION # 13
Which HTTP status code indicates a response to a successful request?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 14
Exhibit.
What is the purpose of the G character shown in the exhibit?
- A. The e sign is a JSON array 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 G sign is a JSON object 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 # 15
Which type of on-box automation script is designed to run every time a user executes a configuration change?
- A. event
- B. commit
- C. operation
- D. SNMP
Answer: B
Explanation:
In Junos OS, acommit scriptis an on-box automation script that runs every time a configuration change is committed. Commit scripts are used to enforce configuration policies, validate configuration changes, or make automatic adjustments to configurations when certain conditions are met.
* Commit Script (C): Executes automatically during the commit process, ensuring that the new configuration adheres to specific rules or conventions before it is applied to the system.
Event, SNMP, and operation scriptsare used for other purposes in Junos automation but do not run automatically with every configuration change.
* Junos OS Automation Scripts Guide: Provides details on different types of scripts, including commit scripts, and their use cases.
* Juniper Networks Documentation: Offers examples and best practices for creating and using commit scripts.
References:
NEW QUESTION # 16
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 interpreted, the code is translated to byte code, 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 translated to byte code, the code is interpreted, and then the byte code is executed in runtime.
Answer: B
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 # 17
Exhibit.
Referring to the exhibit, which two statements about the script are correct? (Choose two.)
- A. The script prints interface information for each interface name.
- B. The script prints the name of each configured interface.
- C. The script retrieves the interface configuration in XML
- D. The script retrieves the interface configuration in JSON.
Answer: B,D
NEW QUESTION # 18
Which character is used to show the start of parameters in a REST API call?
- A. #
- B. ?
- C. &
- D. =
Answer: C
NEW QUESTION # 19
Exhibit.
Referring to the exhibit, what is the correct method to retrieve the value associated only with
''MX960''?
- A. hardware_count. value ()
- B. hardware_count (0)
- C. harware_count [''MX960'']
- D. hardware_count.keys ()
Answer: D
NEW QUESTION # 20
Which development model is the classic approach to software development?
- A. Scrum
- B. Waterfall
- C. Kanban
- D. Lean
Answer: B
Explanation:
Reference: https://searchsoftwarequality.techtarget.com/definition/waterfall-model
NEW QUESTION # 21
What is the default port for NETCONF connections over SSH?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
https://www.juniper.net/documentation/us/en/software/junos/netconf/topics/topic-map/netconf- ssh-connection.html The IANA-assigned port for NETCONF-over-SSH sessions is 830.
NEW QUESTION # 22
Which XML feature is used to ensure that elements defined in multiple schemas would be used in the same document without conflicts?
- A. Namespaces
- B. Attributes
- C. Predicates
- D. Selectors
Answer: B
NEW QUESTION # 23
Using the set rest control configuration command, what are two ways to control access to the REST API running on a Junos device? (Choose two.)
- A. Limit the number of simultaneous connections.
- B. Limit management access to specific users.
- C. Limit access to only certain source IP addresses
- D. Limit management access to only SSH
Answer: A,C
Explanation:
When using the set rest control configuration command on a Junos device, you have several options to control access to the REST API. Two effective methods include:
Limiting the number of simultaneous connections: This ensures that the REST API is not overwhelmed by too many concurrent requests, which could potentially lead to performance issues or denial of service.
Limiting access to certain source IP addresses: This method restricts API access to specific IP addresses, enhancing security by ensuring that only trusted sources can interact with the REST API.
Option A (Limit management access to only SSH) is unrelated to controlling REST API access specifically.
Option B (Limit management access to specific users) might be relevant in a different context, but it is not directly tied to REST API control via the specific command mentioned.
Supporting Reference:
Juniper Networks REST API Documentation: This documentation explains how to configure and control access to the REST API on Junos devices, including connection limits and IP-based access control.
NEW QUESTION # 24
Exhibit.
You are making alternations to an existing script to retrieve the encrypted root password from the Junos device shown in the exhibit. You decide to add this request to the script after the script has navigated to the configuration/system hierarchy.
In this scenario, which XPath reference should be used to accomplish this task
- A. encrypted-password
- B. configuration/version/system/host-name/root-authentication/encrypted-password
- C. root-authentication/encrypted-password
- D. host-name/root-authentication/encrypted-password
Answer: B
NEW QUESTION # 25
What is the difference between a list and a tuple in Python?
- A. Lists are mutable objects that use square brackets, and tuples are immutable objects that use parentheses.
- B. Lists are immutable objects thatuse square brackets, and tuplesare mutable objects that use parentheses.
- C. Lists are mutable objects that use parentheses, and tuples are immutable objects that use square brackets.
- D. Lists are immutable objects that use parentheses, and tuples are immutable objects that use square brackets.
Answer: A
Explanation:
In Python, the distinction between lists and tuples is essential for efficient programming:
* Lists:
* Mutable (B): This means that once a list is created, its elements can be changed, added, or removed. Lists are versatile and commonly used when the data is expected to change.
* Square Brackets: Lists are defined using square brackets[].
Example:
my_list = [1, 2, 3]
my_list[0] = 10 # Modifying the first element
* Tuples:
* Immutable (B): Once a tuple is created, it cannot be altered. Tuples are used when a fixed collection of items is needed, providing more integrity to the data.
* Parentheses: Tuples are defined using parentheses().
Example:
my_tuple = (1, 2, 3)
# my_tuple[0] = 10 # This would raise an error because tuples are immutable
* Python Official Documentation: The Python Language Reference provides detailed information on data types like lists and tuples, including their mutability and syntax.
* Automation Scripts: In the context of automation, understanding when to use mutable or immutable data structures can significantly impact script performance and reliability.
References:
NEW QUESTION # 26
Exhibit.
Referring to the exhibit, which XML XPath expression will only show the IP address XML elements?
- A. //address/name
- B. /address/name
- C. //name
- D. /name
Answer: A
Explanation:
https://www.w3schools.com/xml/xpath_syntax.asp
NEW QUESTION # 27
Which two statements about Python lists are correct? (Choose two.)
- A. Lists contain a countable number of unordered values.
- B. Lists can contain elements of multiple data types.
- C. Lists must contain only elements of the same data type.
- D. Lists contain a countable number of ordered values
Answer: B,D
NEW QUESTION # 28
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The JN0-223 exam covers a range of topics related to automation and DevOps, including scripting languages, automation tools, APIs, and software development methodologies. Candidates who pass JN0-223 exam will be able to demonstrate their ability to automate network operations, deploy applications using DevOps practices, and troubleshoot network issues using automation tools. The JN0-223 exam is a comprehensive test of a candidate's knowledge and skills in automation and DevOps, and it is an excellent way to demonstrate proficiency in these areas.
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