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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: NETCONF and XML API | 20% | - XML API usage and interaction - NETCONF protocol operations and capabilities - XML concepts, syntax and XPath |
| Topic 2: Data Serialization | 15% | - Data modeling and representation - YAML structure and usage - JSON structure and usage |
| Topic 3: Python and PyEZ | 30% | - PyEZ library installation and usage - RPC execution and configuration management - Jinja2 templates and JSNAPy - Python programming basics - Error handling and automation scripts |
| Topic 4: Junos REST API | 15% | - REST API Explorer tool - REST API fundamentals - cURL and HTTP methods |
| Topic 5: Junos Automation Stack and DevOps Concepts | 20% | - Automation frameworks and tools - DevOps principles and culture - Junos automation architecture - Configuration management and version control |
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NEW QUESTION # 52
Which two statements about Junos automation are correct? (Choose two.)
Answer: B,D
Explanation:
A). The Junos REST API client is on-box:
The Junos REST API is on-box, meaning it is hosted directly on the Junos OS device. This allows you to interact with the device through RESTful API calls without needing an external client to act as an intermediary. With the on-box REST API, users can manage and automate configuration and operational tasks directly from the Junos device itself using HTTP/HTTPS protocols. This simplifies automation and remote management since the API server is embedded within the device.
Key Automation Capabilities of On-box REST API:
Supports configuration, monitoring, and operational commands.
Allows for direct device interaction via tools like curl, or through custom-built automation scripts.
Reference:
C . Junos automation allows for device provisioning through the console port:
Junos automation does indeed allow for device provisioning through the console port, especially in the context of Zero Touch Provisioning (ZTP). When network interfaces are not initially configured, or when remote access is not possible, devices can be provisioned via the console port. This method is commonly used during the initial setup process, enabling administrators to deploy configurations even without network access. ZTP automates initial configurations, including system setup and software installation, which can be triggered via the console.
Key Advantages of Console-based Provisioning:
Useful in environments where network interfaces are unavailable or not yet configured.
Essential for the initial bootstrapping of devices in remote locations.
Why the Other Options Are Incorrect:
B . Junos automation does not allow for device provisioning through the console port: This statement is incorrect because Junos automation does allow for provisioning via the console port, particularly during initial device setups.
D . The Junos REST API client is off-box: This is incorrect because the REST API client can be directly on the Junos device, providing local API functionality (on-box).
Juniper Automation in DevOps Context: Junos automation, especially with on-box REST API and console-based provisioning, enhances the flexibility and accessibility of device management in DevOps environments. These capabilities simplify remote configuration, monitoring, and device setup even in cases where direct network access is unavailable.
NEW QUESTION # 53
Exhibit.
Referring to the exhibit, which statement about REST is correct?
Answer: A
NEW QUESTION # 54
Which statement about the NETCONF content layer is true?
Answer: A
Explanation:
The NETCONF protocol, used for network management, utilizes XML for encoding the RPC (Remote Procedure Call) requests and responses. XML is chosen because of its flexibility and ability to represent hierarchical data structures, making it well-suited for representing network configurations and states.
Option B is correct because XML is the standard format used for NETCONF RPC payloads.
Options A (YAML), C (JSON), and D (HTML) are incorrect because these formats are not used by NETCONF for its RPC payloads.
Supporting Reference:
RFC 6241 - NETCONF Protocol: This RFC describes the use of XML for encoding NETCONF messages.
NEW QUESTION # 55
Which two statements are true about an XML schema document? (Choose two.)
Answer: B,C
Explanation:
An XML schema document (XSD) is a key component in defining the structure and constraints of XML data used in various applications, including Junos:
Authoritative Source (C): An XML schema document serves as the authoritative definition of the structure, content, and semantics of XML documents. It ensures that the XML data adheres to specific rules and formats, which is essential for both operational and configuration XML.
XSD Format (D): XML schema documents are typically written in the XSD (XML Schema Definition) format, which provides a formal description of the XML document's structure.
Option A is incorrect because XML schemas are not formatted as XLT files (which are related to XSLT transformations), and Option B is incorrect because XML schemas can indeed be examined in the Junos CLI using appropriate commands.
Reference:
W3C XML Schema Definition Language (XSD) Documentation: Provides comprehensive information on the XSD format.
Juniper Networks Documentation: Discusses the role of XML schemas in managing Junos configurations.
NEW QUESTION # 56
Which two statements about the REST API are correct? (Choose two.)
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 # 57
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