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Rest - Interview Questions and Answers for 'Cognizant (cts)' - 3 question(s) found - Order By Newest

Very frequently asked in companies using SOA.
  Q1. What are RESTful Web Services ?Rest
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Ans. REST or Representational State Transfer is a flexible architecture style for creating web services that recommends the following guidelines -

1. http for client server communication,
2. XML / JSON as formatiing language ,
3. Simple URI as address for the services and,
4. stateless communication.

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Related Questions

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 If you are given a choice to have a functionality shared either through dependency or through a Web service, which one will you choose ?
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 If Project A is calling web service of project B and there are some changes in project B, Will Project A needs to be rebuilt ?


  Q2. Difference between GET and POST Requests ?Web Service2016-07-22 15:00:21

Ans. GET is supposed to get information from the server. Client sends the minimal information so that Server can respond with the response body on basis of request. For example - You want to get complete employment record for employee id 123

POST is supposed to send the information for submission. Payload or a Body is usually sent so that it can be persisted on the server. For example - Sending the complete information of an employee ( id, name , dept etc ) to the server for persisting it.

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Related Questions

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  If you have access to a function that returns a random integer from one to five, write another function which returns a random integer from one to seven.
  Which markup languages can be used in restful web services ?
  Why Web services use HTTP as the communication protocol ?
  Name some Java REST services frameworks ?
  Name few Restriction Methods ?


 Q3. What is a Webdriver ?Testing2017-02-02 08:25:41

Ans. Selenium WebDriver is a tool for automating web application testing.It helps in replicating the manual tester behavior like keyboard entry, mouse events etc and then matching the output against the expected.

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