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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.

Questions & Answers

what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
analytical skills graphene is prepared to kill any type viruses .
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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