JSON Interview Questions

In this post we will look at JSON Testing Tool Interview questions. Examples are provided with explanation.


Q: Explain what is JSON?
A: JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language
The JSON format is often used for serializing and transmitting structured data over a network connection. It is used primarily to transmit data between a server and web application, serving as an alternative to XML.

Q: What are the advantages and disadvantages of using JSON?
A: The Advantages of using JSON are as follows-

• Smaller message size
• More structural information in the document
• Can easily distinguish between the number 1 and the string "1" as numbers, strings (and Booleans) are represented differently in JSON.
• Can easily distinguish between single items and collections of size one (using JSON arrays).
• Easier to represent a null value
• Easily consumed by JavaScript

The Advantages of using XML are as follows-

• Namespaces allow for sharing of standard structures
• Better representation for inheritance
• Standard ways of expressing the structure of the document: XML schema, DTD, etc
• Parsing standards: DOM, SAX, StAX
• Standards for querying: XQuery and XPath
• Standards for transforming a document: XSLT

Q: What is JSON RPC?
A: JSON-RPC is a stateless, light-weight remote procedure call (RPC) protocol. Primarily this specification defines several data structures and the rules around their processing. ..It uses JSON (RFC 4627) as data format.

Q: What data types are supported by JSON?
A: The data types are as follows -

• string
• object
• array
• boolean
• null

Q: What are some popular JSON tools?
A: The popular JSON tools are as follows -

• JSONLint - https://jsonlint.com
• JSON Editor Online - https://jsoneditoronline.org/
• JSON Minifier Tool - https://www.browserling.com/tools/json-minify
• JSON to XML Converter - https://codebeautify.org/jsontoxml
• JSON Formatter - https://jsonformatter.curiousconcept.com/

Q: What is BSON?
A: BSON is a computer data interchange format. The name "BSON" is based on the term JSON and stands for "Binary JSON". It is a binary form for representing simple or complex data structures including associative arrays (also known as name-value pairs), integer indexed arrays, and a suite of fundamental scalar types. BSON originated in 2009 at MongoDB.

See Also
Spring Batch Interview Questions
Apache Camel Interview Questions
JBoss Fuse Interview Questions
Drools Interview Questions
Java 8 Interview Questions