FANTASTIC JN0-223 NEW TEST CAMP, ENSURE TO PASS THE JN0-223 EXAM

Fantastic JN0-223 New Test Camp, Ensure to pass the JN0-223 Exam

Fantastic JN0-223 New Test Camp, Ensure to pass the JN0-223 Exam

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Juniper Automation and DevOps, Associate (JNCIA-DevOps) Sample Questions (Q17-Q22):

NEW QUESTION # 17
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 management access to specific users.
  • B. Limit access to only certain source IP addresses
  • C. Limit management access to only SSH
  • D. Limit the number of simultaneous connections.

Answer: B,D

Explanation:
When using theset rest control configurationcommand 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 References:
* 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 # 18
Which two statements about the REST API are correct? (Choose two.)

  • A. The TCP session state is maintained by the server.
  • B. The TCP session state is maintained by the client
  • C. The REST API application is stateful.
  • D. The REST API application is stateless.

Answer: B,D

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 # 19
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, a namespace is 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.
Detailed Explanation:
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:
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, the item elements are in different namespaces (ns1 and ns2), which keeps them unique even though they have the same name.
Reference:
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.
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 # 20
Which two statements are correct about a Python dictionary data type? (Choose two.)

  • A. The data contained in a dictionary data type is a key/value pair.
  • B. The data stored in a dictionary data type is not sequenced or indexed.
  • C. The data stored in a dictionary data type is sequenced and indexed.
  • D. The data contained in a dictionary data type cannot be removed once the dictionary has been created.

Answer: A,B

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 incorrect because dictionary entries can be added, modified, or removed after the dictionary is created. Option B is incorrect because dictionaries are not accessed by a numeric index but rather by their keys.
Reference:
Python Official Documentation: Details the nature of dictionaries, including their mutability and key/value structure.
Python Data Structures Guide: Explains dictionary operations and characteristics.


NEW QUESTION # 21
Which two statements about the REST API are correct? (Choose two.)

  • A. The TCP session state is maintained by the server.
  • B. The TCP session state is maintained by the client
  • C. The REST API application is stateful.
  • D. The REST API application is stateless.

Answer: B,D

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 # 22
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