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Questions and Answers
Which of the following is a valid example of JSON format?
Which of the following is a valid example of JSON format?
- { 'key': 'value' }
- { "key": "value" } (correct)
- { key = value }
- { key: value }
What is the correct syntax for escaping double quotes in JSON?
What is the correct syntax for escaping double quotes in JSON?
- \" (correct)
- '"'
- """
- ''
Which of the following is not a valid way to represent a JSON object?
Which of the following is not a valid way to represent a JSON object?
- { "key": { "nestedKey": "nestedValue" } }
- { "key": [ "value" ] }
- { "key": "value" }
- [ "key": "value" ] (correct)
Which of the following is an example of a hinge joint in the human body?
Which of the following is an example of a hinge joint in the human body?
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Which of the following joints is an example of a pivot joint in the human body?
Which of the following joints is an example of a pivot joint in the human body?
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Which of the following joints is an example of a ball-and-socket joint in the human body?
Which of the following joints is an example of a ball-and-socket joint in the human body?
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Study Notes
JSON Format
- JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate.
- A valid example of JSON typically includes key-value pairs, such as:
{"name": "John", "age": 30}. - Escaping double quotes in JSON is achieved by using a backslash before the quotes, like this:
\".
JSON Object Representation
- JSON objects must be encapsulated in curly braces
{}. - Keys in JSON objects must be strings enclosed in double quotes.
- A non-valid way to represent a JSON object would be if it lacks keys, is missing curly braces, or uses single quotes instead of double quotes.
Joints in the Human Body
- Hinge joints allow movement in one plane; examples include the elbow and knee.
- Pivot joints enable rotational movement around a single axis; examples include the joint between the first and second cervical vertebrae (atlantoaxial joint).
- Ball-and-socket joints provide the greatest range of movement and examples include the shoulder and hip joints.
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