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Interview Questions and Answers for 'Cogent infotech' - 9 question(s) found - Order By Newest

Very frequently asked.Usually among first few questions.
  Q1. What is MVC ? Design
Anonymous
Ans. MVC is a Design Pattern that facilititates loose coupling by segregating responsibilities in a Web application

1. Controller receives the requests and handles overall control of the request
2. Model holds majority of the Business logic, and
3. View comprise of the view objects and GUI component

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   Like         Discuss         Correct / Improve     j2ee   mvc   mvc design pattern   design pattern   struts   spring   web application   web frameworks   ebay     Asked in 60 Companies      basic        frequent

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Frequently asked to fresh graduates.
  Q2. Difference between Process and Thread ?Operating System
Anonymous
Ans. Process is a program in execution whereas thread is a separate path of execution in a program.

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   Like         Discuss         Correct / Improve     java   threads   multi threading   operating system   basic interview question     Asked in 24 Companies      basic        frequent


 Q3. In which cases using SOAP is preferred over REST ?Web Service2017-04-27 18:08:18

Ans. SOAP services are better in case we need to establish a formal and detail contract with the client or callers and hence suitable for

1. Services published for much wider unknown audience
2. Require large input payload
3. Requiring different level for authentication

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   Like         Discuss         Correct / Improve     soap vs rest  soap  rest     Asked in 2 Companies


Frequently asked at HCL Technologies ( Based on 3 feedback )
  Q4. Difference between Checked and Unchecked exceptions ?Core Java
Anonymous
Ans. Checked exceptions are the exceptions for which compiler throws an errors if they are not checked whereas unchecked exceptions are caught during run time only and hence can't be checked.

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   Like         Discuss         Correct / Improve     java   exceptions   checked exceptions   unchecked exceptions   exception handling   basic interview question     Asked in 37 Companies      basic        frequent

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 Q5. Difference between Inner and Outer Join ?Database
Admin
info@buggybread.com
Ans. Inner join is the intersection of two tables on a particular columns whereas Outer Join is the Union of two tables.

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   Like         Discuss         Correct / Improve     sql   joins   inner join   outer join     Asked in 3 Companies      basic        frequent


 Q6. What is Left Outer Join ?Database2018-01-05 15:25:44

 This question was recently asked at 'NIIT Tech,Cogent Infotech Corp'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     database   database joins   left outer join  sql     Asked in 2 Companies


 Q7. Difference between Left and Inner Join ?SQL2018-05-24 13:24:47

 This question was recently asked at 'Canopy Tax,Cogent Infotech Corp'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     sql     Asked in 2 Companies


 Q8. If SOAP is more secure than Rest, Why many applications today use Rest ?Web Service2018-07-04 16:21:38

Ans. SOAP supports only xml whereas Rest support many other formats.

Rest services are very light weight compared to SOAP.

SOAP services are code heavy as they require creation. of stubs and skeltons.

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   Like         Discuss         Correct / Improve     soap  rest  soap vs rest     Asked in 2 Companies


 Q9. create an SQL query across multiple tables involving outer joins Database2019-01-27 16:06:28

Ans. Select * from table1 t1Left outer join table2 t2 on t1.tid = t2.id

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   Like         Discuss         Correct / Improve     sql query  database  outer joins     Asked in 2 Companies




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