XML Concepts and Syntax JN0-224 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A network automation engineer is writing a Python script that generates an XML configuration payload to send to a Junos device via NETCONF. The script builds the payload as a string, but the device rejects the request with a 'syntax error' message. The engineer inspects the generated XML and finds the following fragment: <configuration><system><host-name>router1</host-name></configuration></system>. Which well-formedness rule is violated?

   • AThe element names contain invalid characters.
   • BThe root element is not the first element in the document.
   • CThe attribute values are not enclosed in quotation marks.
   • DThe closing tags are not nested in the reverse order of the opening tags.
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2. 12application · medium

   A Junos automation engineer receives an XML configuration file from a colleague and wants to verify that it conforms to the expected structure before committing it to a device. The engineer has an XSD schema that defines the allowed elements, their order, and data types. Which tool or method should the engineer use to check the file against the schema?

   • ARun xmllint --valid config.xml
   • BUse the Junos 'load replace' command to test the file
   • CRun xmllint --schema schema.xsd config.xml
   • DOpen the file in a text editor and visually compare it to the schema
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4. 13foundation · easy

   What rule must be followed for an XML document to be considered well-formed?

   • AElement names must be unique across the document.
   • BThe document must contain a schema declaration.
   • CAll elements must be properly nested and closed.
   • DEvery element must have at least one attribute.
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5. 14application · medium

   An engineer is using XPath to query a Junos XML configuration. The document contains: <configuration><interfaces><interface><name>ge-0/0/0</name><unit><name>0</name></unit></interface></interfaces></configuration>. The engineer wants to select the <name> element that contains the text 'ge-0/0/0'. Which XPath expression achieves this?

   • A//interface[@name='ge-0/0/0']
   • B//interface/unit/name[text()='ge-0/0/0']
   • C//name[text()='ge-0/0/0']
   • D//interface/name[text()='ge-0/0/0']
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6. 15foundation · easy

   What is the primary role of an XML Schema Definition (XSD) in relation to an XML document?

   • ATo provide a human-readable description of the document.
   • BTo transform the XML document into another format.
   • CTo specify the encoding and version of the XML document.
   • DTo define the structure and data types, and to validate the document against them.
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