Coursera | Using Python to Access Web Data

eXtensible Markup Language >> Using Python to Access Web Data

eXtensible Markup Language >> Using Python to Access Web Data


1. What is “serialization” when we are talking about web services?

  • Sorting all the data stored in a tuple
  • The act of taking data stored in a program and formatting it so it can be sent across the network
  • Marking each network packet so it can be put back into order on the receiving system
  • Making it so that dictionaries can maintain their keys in sorted order

2. Which of the following are not commonly used serialization formats?

  • HTTP
  • Dictionaries
  • XML
  • TCP
  • JSON

3. In this XML, which are the “simple elements”?

<people>
<person>
<name>Chuck</name>
<phone>303 4456</phone>
</person>
<person>
<name>Noah</name>
<phone>622 7421</phone>
</person>
</people>
  • person
  • people
  • phone
  • Noah
  • name

4.In the following XML, which are attributes?

   Chuck
+1 734 303 4456
  • email
  • type
  • person
  • hide
  • name

5. In the following XML, which node is the parent node of node e

   X        Y
Z
  • e
  • c
  • b
  • a

6. Looking at the following XML, what text value would we find at path “/a/c/e”

   X        Y
Z
  • e
  • Z
  • b
  • Y
  • a

7. What is the purpose of XML Schema?

  • A Python program to tranform XML files
  • To compute SHA1 checksums on data to make sure it is not modified in transit
  • To transfer XML data reliably during network outages
  • To establish a contract as to what is valid XML

8. If you were building an XML Schema and wanted to limit the values allowed in an xs:string field to only those in a particular list, what XML tag would you use in your XML Schema definition?

  • xs:complexType
  • xs:sequence
  • xs:element
  • xs:enumeration
  • maxOccurs

9. What is a good time zone to use when computers are exchanging data over APIs?

  • The local time zone of the receiving computer
  • Universal Time / GMT
  • The local time zone of the sending computer without daylight savings time
  • The local time zone of the sending computer

10. Which of the following dates is in ISO8601 format?

  • 05/30/2002
  • May 30, 2002
  • 2002-May-30
  • 2002-05-30T09:30:10Z

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