XML Concepts and Syntax JN0-224 Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A script generates an XML payload for a Junos device, but the device rejects it. The engineer checks the payload and finds: <configuration><system><host-name>router1</host-name></system></configuration>. The engineer suspects a well-formedness issue. Which change would fix the document?

   • ARemove the host-name element
   • BEnsure all elements are properly nested and closed
   • CAdd an XML declaration at the beginning: <?xml version="1.0"?>
   • DAdd a closing tag for the root element: <configuration>...</configuration>
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2. 2application · medium

   A team is building a NETCONF-based tool that merges configuration data from two different vendors. Both vendors use an element named <name> in their XML, but with different meanings: one uses it for the device hostname, the other for the interface name. To avoid a conflict when the data is combined, the team decides to use XML namespaces. Which declaration correctly associates the <name> element with a specific namespace?

   • A<vendor-a:name>router1</vendor-a:name>
   • B<name xmlns:vendor-a="http://vendor-a.com/schema">router1</name>
   • C<name namespace="http://vendor-a.com/schema">router1</name>
   • D<name xmlns="http://vendor-a.com/schema">router1</name>
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4. 3foundation · easy

   Which part of an XML document contains the XML version declaration and optional encoding information?

   • AThe prolog
   • BThe document body
   • CThe attribute list
   • DThe root element
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5. 4foundation · easy

   What is the purpose of an XML namespace?

   • ATo specify the encoding of the document.
   • BTo uniquely identify elements and attributes to avoid name conflicts.
   • CTo validate the document against a schema.
   • DTo define the order of elements in a document.
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6. 5foundation · easy

   In XPath, what does the expression //interface select?

   • AThe first <interface> element in the document.
   • BAll <interface> elements that are children of the root element.
   • CThe parent of all <interface> elements.
   • DAll <interface> elements anywhere in the document.
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