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Json - Interview Questions and Answers for 'Json' - 12 question(s) found - Order By Newest

 Q1. What are the benefits of JSON over XML ?Json
Anonymous
Ans. Lighter and faster than XML as on-the-wire data format

Object Representation - Information is presented in object notations and hence better understandable.

Easy to parse and conversion to objects for information consumption.

Support multiple data types - JSON supports string, number, array, boolean whereas XML data are all string.

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   Like         Discuss         Correct / Improve     json   markup language     Asked in 1 Companies      intermediate        frequent
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  Q2. What is JSON ?Json
Anonymous
Ans. JSON is "JavaScript Object Notation", primarily used for client-server or server-server communication. Its a much lighter and readable alternative to XML. JSON is language independent and is easily parse-able in all programming languages.

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   Like         Discuss         Correct / Improve     json   markup language   client server communication     Asked in 26 Companies      basic        frequent
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 Q3.  What is the role of JSON.stringify ?Json
Anonymous
Ans.  JSON.stringify() turns an object into a JSON text and stores that JSON text in a string. 

So If we stringfy above notation , it will become

{"name":"xyz","gender":"male";"age":30}

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   Like         Discuss         Correct / Improve     json   JSON.stringify      intermediate        rare

 Q4. Which function is used to convert a JSON text into an object ?Json
Anonymous
Ans. eval

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 Q5. Which data types are supported by JSON ?Json
Anonymous
Ans. Number
String
Boolean
Array
Object
null

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 Q6. Which markup languages can be used in restful web services ? Rest
Admin
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Ans. XML and JSON ( Javascript Object Notation ).

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 Q7. If we have to specify a collection of a particular information like List of addresses, How can we represent that in a JSON ?JSON2017-08-10 17:06:12

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   Like         Discuss         Correct / Improve     json

 Q8. Can you explain JSON specification ?JSON2018-05-03 08:25:12

 This question was recently asked at 'One Click Retail'.This question is still unanswered. Can you please provide an answer.


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 Q9. Can comments be added in JSON ?JSON2018-12-14 09:49:49

Ans. No, It should all be data.

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 Q10. How to parse nested json object ?JSON2019-01-04 10:12:48

Ans. JSONObject jsonChildObject = (JSONObject)jsonObject.get("LanguageLevels");

for (Map.Entry in jsonChildOBject.entrySet()) {
System.out.println("Key = " entry.getKey() ", Value = " entry.getValue());
}

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 Q11. Which of the following is not an advantage of JSON over XML ?JSON
a. Lighter and Faster
b. Object Representation
c. Supports multiple data types
d. Backward compatible with all XML applications

Ans.d. Backward compatible with all XML applications
 Q12. JSON is a ..JSON
a. Programming Language
b. Markup Language
c. Scripting Language
d. Database Language

Ans.b. Markup Language

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