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Question-1. What is YAML?
Answer-1: YAML (YAML Ain't Markup Language) is a human-readable data serialization standard often used for configuration files.
Question-2. What does YAML stand for?
Answer-2: YAML originally stood for "Yet Another Markup Language" but now is "YAML Ain't Markup Language."
Question-3. What file extensions are used for YAML?
Answer-3: YAML files typically use .yaml or .yml extensions.
Question-4. How do you define a key-value pair in YAML?
Answer-4: Use the format key: value. Example: name: John.
Question-5. What is the syntax for an array in YAML?
Answer-5: Use a hyphen followed by a space for each item. Example: - item1 \n - item2.
Question-6. How does YAML represent nested structures?
Answer-6: YAML uses indentation to represent nested structures. Example: person:\n name: John.
Question-7. How do you comment in a YAML file?
Answer-7: Use the # symbol. Example: # This is a comment.
Question-8. How do you write a multi-line string in YAML?
Answer-8: Use the `
Question-9. How do you reference an anchor in YAML?
Answer-9: Define an anchor with & and reference it with *. Example: default: &id value \n key: *id.
Question-10. What is a YAML document separator?
Answer-10: The --- line separates multiple documents within a YAML file.
Question-11. Is YAML case-sensitive?
Answer-11: Yes, YAML is case-sensitive.
Question-12. How do you write boolean values in YAML?
Answer-12: Use true or false. Example: isActive: true.
Question-13. How do you represent null values in YAML?
Answer-13: Use null or ~. Example: key: null.
Question-14. Can YAML include comments?
Answer-14: Yes, YAML supports comments using the # symbol.
Question-15. What is the difference between JSON and YAML?
Answer-15: YAML is more human-readable and allows comments, while JSON is stricter and machine-friendly.
Question-16. How do you write a string in YAML?
Answer-16: Strings can be written in quotes ("string" or 'string') or unquoted (string).
Question-17. What are YAML tags?
Answer-17: YAML tags specify the data type of a value. Example: !!str for strings.
Question-18. How do you define a map in YAML?
Answer-18: Use key-value pairs with proper indentation. Example: map:\n key1: value1\n key2: value2.
Question-19. How do you include binary data in YAML?
Answer-19: YAML supports binary data encoded in base64.
Question-20. How do you handle special characters in strings?
Answer-20: Enclose strings with special characters in quotes.
Question-21. What is an anchor in YAML?
Answer-21: An anchor (&) allows you to define a reusable value in YAML.
Question-22. What is an alias in YAML?
Answer-22: An alias (*) is used to reference an anchor.
Question-23. What is the YAML stream?
Answer-23: A YAML stream is a series of documents separated by ---.
Question-24. What are the three node types in YAML?
Answer-24: YAML nodes can be scalars, sequences, or mappings.
Question-25. How do you represent a sequence in flow style in YAML?
Answer-25: Use square brackets. Example: [item1, item2].
Question-26. How do you represent a mapping in flow style in YAML?
Answer-26: Use curly braces. Example: {key1: value1, key2: value2}.
Question-27. How do you separate multiple documents in YAML?
Answer-27: Use --- to separate documents within a single YAML file.
Question-28. How does YAML handle indentation?
Answer-28: YAML uses spaces for indentation; tabs are not allowed.
Question-29. What happens if YAML has inconsistent indentation?
Answer-29: YAML parsers will throw a syntax error for inconsistent indentation.
Question-30. Can YAML represent complex data structures?
Answer-30: Yes, YAML supports complex data structures such as nested maps and sequences.
Question-31. What character encoding does YAML use?
Answer-31: YAML uses UTF-8 encoding by default.
Question-32. What is a YAML directive?
Answer-32: A directive provides instructions for the YAML processor, beginning with %. Example: %YAML 1.2.
Question-33. How do you handle long strings in YAML?
Answer-33: Use > for folding lines or `
Question-34. How do you represent a timestamp in YAML?
Answer-34: Use ISO 8601 format. Example: date: 2023-12-12.
Question-35. What are YAML anchors and aliases used for?
Answer-35: They reduce redundancy by reusing data definitions.
Question-36. Can YAML be used with programming languages?
Answer-36: Yes, many programming languages support YAML parsers.
Question-37. How do you define an empty array in YAML?
Answer-37: Use square brackets: list: [].
Question-38. How do you specify a default value for a key in YAML?
Answer-38: Use `
Question-39. What is YAML used for?
Answer-39: YAML is commonly used for configuration files, data serialization, and communication between applications.
Question-40. How do you handle duplicates in YAML?
Answer-40: Use anchors and aliases to prevent duplicates.
Question-41. What are YAML scalars?
Answer-41: Scalars are single values like strings, numbers, or booleans.
Question-42. Can YAML be converted to other formats?
Answer-42: Yes, YAML can be converted to JSON or XML using libraries or tools.
Question-43. How do you define a YAML sequence with inline formatting?
Answer-43: Use a comma-separated list inside square brackets. Example: [item1, item2].
Question-44. What is a block collection in YAML?
Answer-44: Block collections are sequences or mappings represented using indentation.
Question-45. How do you define a map key with spaces in YAML?
Answer-45: Enclose the key in quotes. Example: "key with spaces": value.
Question-46. What is a YAML processor?
Answer-46: A YAML processor reads and interprets YAML documents.
Question-47. How do you ensure YAML compatibility across versions?
Answer-47: Use the %YAML directive to specify the version. Example: %YAML 1.2.
Question-48. How do you write a single-line YAML comment?
Answer-48: Use the # character. Example: key: value # Comment here.
Question-49. What is a YAML alias?
Answer-49: An alias (*) references an anchor defined elsewhere in the file.
Question-50. How do you enforce a specific data type in YAML?
Answer-50: Use type tags like !!int for integers. Example: value: !!int "123".
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