YAML and JSON Data Structure Basics

1. What is the maximum depth for nested structures in JSON?

5 levels

10 levels

Theoretically unlimited (limited by parser)

2 levels

2. What is a key advantage of using YAML in infrastructure-as-code workflows?

It is faster to parse than JSON

It is human-readable and reduces syntax overhead

It supports comments natively and is easier to maintain

All of the above

3. For automation and configuration management, which format is preferred by Ansible?

JSON

XML

YAML

CSV

4. In YAML, what happens if you don't quote a string that looks like a number?

It is treated as a number

It remains a string

It causes a parsing error

It is converted to boolean

5. Which statement correctly describes JSON array syntax?

Arrays must contain only one data type

Arrays are enclosed in square brackets and comma-separated

Arrays cannot be nested

Arrays require named indices

6. In YAML, how do you reference a previously defined anchor?

Using the * symbol (alias)

Using the & symbol again

Using the $ symbol

Using the # symbol

7. What is the primary use case for JSON in automation platforms?

Human-readable configuration files

API responses and data interchange

Ansible playbooks

Infrastructure templates

8. In YAML, what does the greater-than (>) symbol represent?

A comparison operator

A folded multi-line string (collapsing newlines)

A redirect operator

An alias reference

9. Which data type does JSON not natively support?

Date/Time

String

Number

Boolean

10. In YAML, what does the ampersand (&) symbol do?

Defines an anchor for reuse

Creates a comment

Indicates a multi-line string

Escapes special characters

11. What is the primary difference between YAML and JSON in terms of syntax?

YAML uses indentation; JSON uses braces and brackets

YAML requires quotes; JSON does not

JSON is only for web; YAML is only for configuration

YAML uses commas; JSON uses colons

12. In YAML, how do you define a nested dictionary?

Using curly braces {}

Using indentation and key-value pairs

Using square brackets []

Using pipes |

13. Which statement is true about JSON parsing?

Trailing commas are allowed in JSON

Comments are natively supported in JSON

JSON requires strict validation of syntax

JSON is case-insensitive for keys

14. In YAML, what does the pipe (|) symbol indicate?

A logical OR operation

A multi-line string (preserving newlines)

A comment

A reference to another key

15. How do you represent a string with special characters in JSON?

Use single quotes

Use double quotes and escape special characters

Use backslashes

Special characters are not allowed

16. In YAML, which indentation style is most commonly used in automation tools?

Two spaces

Four spaces

Tabs

One space

17. What is the correct JSON syntax for an empty object?

[]

{}

Null

""

18. In YAML, how do you denote a null or empty value?

Use 'null' or leave blank

Use '~' or leave blank

Use 'empty' or 'none'

Use '0' or 'false'

19. Which JSON data type can contain multiple values of mixed types?