Download Juniper JN0-223 Sample Questions [Jan-2025]
Real JN0-223 Exam Questions and Answers FREE
NEW QUESTION # 16
What will determine which data serialization format is used for interfacing with a system?
- A. IDE specifications
- B. the system's API
- C. the operating system
- D. programming language version
Answer: B
NEW QUESTION # 17
Exhibit.
Referring to the exhibit, what is the correct method to retrieve the value associated only with
''MX960''?
- A. hardware_count.keys ()
- B. hardware_count (0)
- C. hardware_count. value ()
- D. harware_count [''MX960'']
Answer: A
NEW QUESTION # 18
In Phython, my_list = [ 1, 2, 3] is an example of which type of operation?
- A. Membership
- B. comparison
- C. Assignment
- D. bitwise
Answer: A
NEW QUESTION # 19
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. Selectors
- C. Predicates
- D. Attributes
Answer: D
NEW QUESTION # 20
Exhibit.
You are asked to create a block of code containing a list of desserts.
What would you do to correct the YAML block shown in the exhibit?
- A. The YAML block should not have a comment
- B. The YAML block should start with # /bash/bin.
- C. The item - ice cream should be in quotes.
- D. The item - cake should not be indented.
Answer: D
NEW QUESTION # 21
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 isrpd process runningon the Junos device.
- C. The request is handled by the rpd process runningon the Junos device.
- D. The request is handled by the isd process runningon the Junos device
Answer: B
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 # 22
What is the purpose of an XSD file?
- A. to define the security and access permissions for an XML document
- B. to define the scripting language of an XML document
- C. to define the allowed elements and hierarchy of an XML document
- D. to define the shortcuts that can be used in an XML document
Answer: C
Explanation:
Reference: https://www.proficomms.cz/files/datasheets/Juniper/junosos.pdf (p.4)
NEW QUESTION # 23
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. operation
- B. commit
- C. SNMP
- D. event
Answer: D
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 # 24
You are asked to develop a PyEZ application that will connect to multiple Junos devices using the XML API and perform an asset inventory. Which standards-based protocol should you use to perform this
- A. gRPC
- B. NETCONF
- C. THRIFT
- D. MQTT
Answer: B
NEW QUESTION # 25
According to the Manifesto for Agile Software Development, what is the highest priority?
- A. customer satisfaction obtained through continuous delivery of valuable software
- B. a well-documented statement of work created before the development cycle begins
- C. continuous attention to technical excellence and good design enhances quality
- D. on-time software releases based on a quarterly or semi-annual time frame
Answer: A
Explanation:
Reference: https://airfocus.com/glossary/what-is-agile-
manifesto/#:~:text=The%20highest%20priority%20is%
20to,continuous%2C%20delivery%20of%20valuable%20software
NEW QUESTION # 26
Which character is used to show the start of parameters in a REST API call?
- A. =
- B. &
- C. #
- D. ?
Answer: B
NEW QUESTION # 27
Exhibit.
Referring to the exhibit, which statement about the Ansible host file is correct?
- A. Only router3 is included in the routers group
- B. All routers are part of the routers group.
- C. router1 and router2 are excluded from the routers group.
- D. router1 and router2 are included in the routers group.
Answer: D
NEW QUESTION # 28
Exhibit.
Referring to the exhibit, which XPath statement would retrieve the commit-user attribute in the candidate configuration?
- A. configuration:@ junos: commit-user
- B. configuration/@ junos: commit-user
- C. configuration/commit-user
- D. configuration/junos: commit-user
Answer: A
NEW QUESTION # 29
Which Python operator is used to test if two variables are equal?
- A. =
- B. !=
- C. ==
- D. %
Answer: C
Explanation:
In Python, the==operator is used to test whether two variables are equal. It returnsTrueif the variables are equal andFalseif they are not.
* Option B (==)is correct because it is the equality operator in Python.
* Option A (!=)is used for inequality,Option C (%)is the modulus operator, andOption D (=)is used for assignment, not for testing equality.
Supporting References:
* Python Documentation on Operators:The official Python documentation covers the use of==for equality checks.
NEW QUESTION # 30
Junos PyEZ is a microframework used to operate the Junos OS using which language?
- A. Python
- B. Chef
- C. Puppet
- D. Ruby
Answer: A
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
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: B
Explanation:
https://www.w3schools.com/xml/xpath_syntax.asp
NEW QUESTION # 32
Which data construct is used to guarantee that element names and data values remain unique in an XML document?
- A. schema definition
- B. dictionary
- C. namespace
- D. element
Answer: C
Explanation:
In XML documents, anamespaceis the data construct used to ensure that element names and data values remain unique. Namespaces prevent naming conflicts by differentiating between elements or attributes that may have the same name but different meanings. This is particularly important in XML, where documents often incorporate elements from multiple sources.
* XML Namespaces: A namespace is a collection of names, identified by a URI reference, which is used to distinguish between elements that may have identical names but different definitions or origins. This helps avoid ambiguity in the document.
* How Namespaces Work: When a namespace is applied, each element or attribute in the XML document is associated with a prefix. This prefix, combined with the namespace URI, ensures that the element or attribute is uniquely identified, even if another element or attribute in the same document has the same local name but a different namespace.
* Schema Definition vs. Namespace: Although an XML schema definition (XSD) can define the structure and type constraints of an XML document, it does not guarantee uniqueness of element names across different XML documents. That role is fulfilled by namespaces.
* Practical Example:
Detailed Explanation:xml
Copy code
<root
xmlns:ns1="http://www.example.com/ns1"
xmlns:ns2="http://www.example.com/ns2">
<ns1:item>Item in namespace 1</ns1:item>
<ns2:item>Item in namespace 2</ns2:item>
</root>
In this example, theitemelements are in different namespaces (ns1andns2), which keeps them unique even though they have the same name.
* Juniper Automation and DevOps Documentation: These practices highlight the importance of namespaces in XML documents to maintain the integrity and uniqueness of data, which is essential in automation scripts and configuration files.
* W3C XML Namespace Specification: The World Wide Web Consortium (W3C) standard for XML Namespaces defines how namespaces should be used to avoid name conflicts.
References:Namespaces are a crucial concept in XML, ensuring that data can be consistently managed and interpreted correctly, particularly in complex systems where multiple XML documents or schemas are involved.
NEW QUESTION # 33
Which statement is correct about Ansible playbooks?
- A. A playbook is a configuration file that defines the Ansible related parameters
- B. A playbook contains one or more tasks written in XML
- C. A playbook is a specific Python module that is executed on a host
- D. A playbook can contain multiple tasks and execute multiple Python modules
Answer: D
NEW QUESTION # 34
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The JN0-223 exam is a 90-minute online exam that consists of 65 multiple-choice questions. JN0-223 exam is administered by Pearson VUE, a leading provider of computer-based testing services. The passing score for the exam is 65%, and the exam fee is $200 USD. Candidates who pass the exam will be awarded the Juniper Networks Certified Associate - Automation and DevOps (JNCIA-DevOps) certification, which is valid for three years.
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