XML Review Quiz

Which of the following is true about XML tags?

• Tags are case-insensitive

• Tags are case-sensitive

• Tags can be written in any case

• Tags must start with an uppercase letter

What happens if an opening tag in XML does not have a corresponding closing tag?

• It is valid if it contains no data

• It causes a parsing error

• The XML parser ignores the tag

• The document still works correctly

What is required when specifying attribute values in XML?

• Attribute values can be unquoted

• Attribute values must be quoted

• Attribute values must be written in single quotes only

• Attribute values must match the tag name

How many root elements can an XML document have?

• One unique root element

• Multiple root elements are allowed

• No root element is required

• The root element must be repeated for every tag

What will cause an XML document to be invalid?

• Opening tags with corresponding closing tags

• Using case-sensitive tags correctly

• Unquoted attribute values

• Properly nested tags

If the following XML is provided, what is wrong with the structure?

• The closing tag for is missing

• The opening tag for is incorrect

• The tags are not properly nested

• Attribute values are not quoted

What does it mean for tags to be 'properly nested' in XML?

• Tags must always be lowercase

• Tags must open and close in order

• Tags must have quoted attributes

• Tags can be arranged in any order as long as they have closing tags

What is the purpose of the root 'document' element in XML?

• It ensures the XML document can have multiple roots

• It makes the XML readable by humans

• It contains all other elements and must be unique

• It allows tags to be unquoted

Which of the following examples shows properly nested XML tags?

• <tag1><tag2></tag1></tag2>

• <tag1><tag2></tag2></tag1>

• <tag1><tag2><tag3></tag2></tag3>

• <tag1><tag2></tag3></tag2></tag1>

Which of the following XML snippets is incorrect due to case sensitivity?

• <Tag></Tag>

• <tag><Tag></tag></tag>

• <tag><tag></tag></tag>

• <TAG>tag</TAG>