Data Formats

Question 1

What are the three popular standard formats for exchanging information with remote APIs

Answer 1

XML, JSON and YAML

Question 2

What is the first step in interacting with a REST interface

Answer 2

Authenticate, usually by POSTing a user/password combination and retrieving an expiring token for use in authenticating subsequent requests.

Question 3

What is the second step in interacting with a REST interface

Answer 3

Execute a GET request to a given endpoint (authenticating as required) to retrieve the state of a resource, requesting XML, JSON, or YAML as the output format.

Question 4

What is the third step in interacting with a REST interface

Answer 4

Modify the returned XML, JSON, or YAML.

Question 5

What is the fourth step in interacting with a REST interface

Answer 5

Execute a POST (or PUT) to the same endpoint (again, authenticating as required) to change the state of the resource, again requesting XML, JSON, or YAML as the output format and interpreting it as needed to determine if the operation was successful.

Question 6

What is Extensible Markup Language (XML)

Answer 6

is a derivative of Structured, Generalized Markup Language (SGML), and also the parent of HyperText Markup Language (HTML). XML is a generic methodology for wrapping textual data in symmetrical tags to indicate semantics. XML filenames typically end in “.xml”.

Question 7

What type of data format is this an example of

0101af9811012
t1.nano

0102bg8908023
t1.micro

Answer 7

XML

Question 8

Which data format is user defined tag based?

Answer 8

XML

Question 9

In XML what is the prologue abd what does it contain

Answer 9

The first line in an XML file and contains the tag name xml and attributes
EX.

Question 10

How do you write a comment in XML

Question 11

In XML what are three things to know about attributes

Answer 11

Attribute values must always be included in single or double quotes.
An element may have multiple attributes, but only one attribute with a specific name.
If an element has no content, we can use a shorthand notation in which we put the slash inside the open tag, rather than including a closing tag.

Question 12

In XML why should you use namespace references

Answer 12

to specify particular tagnames and how they should be used in various contexts

Question 13

What is this an example of

Answer 13

A reference to a namespace

Question 14

In XML what is this an example of 
vms [
  {
    {"vmid": "0101af9811012"},
    {"type": "t1.nano"}
  },
  {
    {"vmid": "0102bg8908023"},
    {"type": "t1.micro"}
  }  
]

Answer 14

An instance which is just an a dictionary in XML

Question 15

What is JSON JavaScript Object Notation

Answer 15

a data format derived from the way complex object literals are written in JavaScript (which is in turn, similar to how object literals are written in Python)

Question 16

What is this code an example of

Answer 16

{
  "edit-config":
  {
    "default-operation": "merge",
    "test-operation": "set",
    "some-integers": [2,3,5,7,9],
    "a-boolean": true,
    "more-numbers": [2.25E+2,-1.0735],
  }
}

Question 17

What JSON basic data types?

Answer 17

numbers (written as positive and negative integers, as floats with decimal, or in scientific notation), strings, Booleans (‘true’ and ‘false’), or nulls (value left blank).

Question 18

What are objects in JSON

Answer 18

individual objects in JSON comprise key/value pairs, which may be surrounded by braces, individually:
EX. {“keyname”: “value”}

Question 19

What does JSON not support

Answer 19

comments

Question 20

What is insignifiacnt in JSON

Answer 20

Whitespaces meaning it doesnt care about them

Question 21

What does YAML stand for

Answer 21

YAML Ain’t Markup Language,

Question 22

What is YAML and why is it used

Answer 22

superset of JSON designed for even easier human readability. It’s becoming more common as a format for configuration files, and particularly for writing declarative automation templates for tools like Ansible.

Question 23

What is this code an example of 
---
edit-config:
  a-boolean: true
  default-operation: merge
  more-numbers:
  - 225.0
  - -1.0735
  some-integers:
  - 2
  - 3
  - 5
  - 7
  - 9
  test-operation: set
...

Answer 23

YAML

Question 24

Can JSON parse YAML documents?

Answer 24

No only YAML can parse JSON documents

Question 25

How does a YAML file open and close

Answer 25

With three dots

EX. …

Question 26

What is this code an example of
mymap:
myfirstkey: 5
mysecondkey: The quick brown fox

Answer 26

A map - baiscally a dictionary

Question 27

What is this code an example of 
mylist:
- 1
- 2
- 3

Answer 27

A list in YAML

Question 28

How do you write a comment in YAML

Answer 28

this is a comment

Question 29

What does parsing mean

Answer 29

analyzing a message, breaking it into its component parts, and understanding their purposes in context