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Answer 18

Question 19

True or False: XML is a language.

Answer 19

Question 20

True or False: Every custom markup language created using the XML specification must adhere to XML's underlying grammar.

Answer 20

Question 21

True or False: XML documents are saved with a .rss extension.

Answer 21

Question 22

True or False: An XML document simply stores and describes data.

Answer 22

Question 23

True or False: Good practice suggests that the names of the tags in an XML document should describe the data they contain.

Answer 23

Question 24

True or False: The first line of an XML document, (known as the XML declaration) , should be as shown in Listing 1 below (although the version number may be different at some point in the future):

Listing 1 . Question 24.
<?xml version="1.0"?>

Answer 24

Question 25

True or False: Just like HTML documents, XML documents may have multiple root elements.

Answer 25

Question 26

True or False: A root element can have one or more child elements that describe the root element in more detail.

Answer 26

Question 27

True or False: In Listing 2 below, units is called a parameter

Listing 2 . Question 27.
<height units="inches">66</height>

Answer 27

Question 28

True or False: The terminology "well-formed" is commonly used in conjunction with an XML document.

Answer 28

Question 29

True or False: All of the following must be true in order for an XML document to be well-formed:

  • A root element is required.
  • Closing tags are required.
  • Elements must be properly nested.
  • Values must be enclosed in quotation marks.
  • The document must be valid.

Answer 29

Question 30

True or False: An XML attribute is the most basic unit of an XML document.

Answer 30

Question 31

True or False: An XML element can contain text, attributes, and other elements.

Answer 31

Question 32

True or False: Attributes are contained within an element's opening tag and have values that are delimited by quotation marks.

Answer 32

Question 33

True or False: Tags that begin with the characters in the first line of Listing 3 and end with the characters in the second line of Listing 3 are called processinginstructions.

Listing 3 . Question 33.
<? ?>

Answer 33

Question 34

True or False: Processing instructions must be enclosed by the opening and closing tags of the root element.

Answer 34

Question 35

True or False: XML is not sensitive to upper and lower case.

Answer 35

Question 36

True or False: Element and attribute names must begin with a letter, a number, an underscore, or a colon.

Answer 36

Question 37

True or False: Closing tags are not optional in XML.

Answer 37

Question 38

True or False: Element names may begin with upper-case XML.

Answer 38

Question 39

True or False: The root element can have child elements, and child elements can have other child elements provided that they are properly nested.

Answer 39

Question 40

True or False: An attribute stores additional information about an element without adding text to the element's content.

Answer 40

Question 41

True or False: Attribute values must be in double quotes.

Answer 41

Question 42

True or False: Empty elements are elements that don't have any content of their own.

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Source:  OpenStax, Introduction to xml. OpenStax CNX. Dec 02, 2014 Download for free at https://legacy.cnx.org/content/col11207/1.18
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