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Json - Interview Questions and Answers for 'Json' - 11 question(s) found - Order By Newest

 Q1. What are the benefits of JSON over XML ?Json
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
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
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
Ans. eval

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

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   Like         Discuss         Correct / Improve     json   markup language   client server communication

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

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   Like         Discuss         Correct / Improve     java   web services   rest   java   j2ee   xml   json   architecture      basic        frequent

 Q7. If we have to specify a collection of a particular information like List of addresses, How can we represent that in a JSON ?JSON
 This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     json

 Q8. Can you explain JSON specification ?JSON
 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 ?JSON
Ans. No, It should all be data.

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   Like         Discuss         Correct / Improve     Markup languages

 Q10. How to parse nested json object ?JSON
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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   Like         Discuss         Correct / Improve     json  nested json     Asked in 1 Companies

 Q11. Why would you use XML over JSON when using ajax ?JSON
 This question was recently asked at 'SoftLayer'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     xml  ajax  json     Asked in 1 Companies

 Q12. 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
 Q13. JSON is a ..JSON
a. Programming Language
b. Markup Language
c. Scripting Language
d. Database Language

Ans.b. Markup Language

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