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Interview Questions and Answers - Order By Rating

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 Q781. How can you verify if there were interactions with a static method using PowerMock ?PowerMock
Ans. We can use PowerMockito.verifyStatic for this purpose

PowerMockito.verifyStatic(VerificationModeFactory.times(1));
<Class_Name>.<static_method_name>;

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   Like         Discuss         Correct / Improve     mocking static methods

 Q782. Have you ever used PowerMock ? If yes , which mocking framework you have used it with ?PowerMock
Ans. Yes, I have used PowerMockito with Mockito.

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   Like         Discuss         Correct / Improve     Mockito

 Q783. Explain hibernate associations.Hibernate
 This question was recently asked at 'Ray Business Technologies'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 1 Companies

 Q784. Why is Java platform independent ?Core Java
Ans. Platform independent language means once compiled you can execute the program on any platform (OS). Java is platform independent. Because the Java compiler converts the source code to bytecode, which is Intermediate Language. Bytecode can be executed on any platform (OS) using JVM( Java Virtual Machine).

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 Q785. What is DDOS attack ?Security
Ans. DDOS is denial of service attack in which the hacker seeks to make a machine or resource unavailable to its expected users by disrupting services.

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   Like         Discuss         Correct / Improve     ddos  cyber security

 Q786. What are the advantages of going serverless against reserved servers ?Server
Ans. Quick Turnaround Time and Quick Time to Market
No Worry about the infrastructure , low maintenance
Cost only for use , not for reservation.
Multiple small applications instead of one big. Results in better uptime and mainetnability.

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   Like         Discuss         Correct / Improve     serverless  server vs serverless

 Q787. What is the difference between the 'A' and "A" in Java ?Core Java
Ans. 'A' is a character whereas "A" is a String.

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 Q788. What is the difference between try-catch and @ExceptionHandler in Java/Spring Boot?Spring Boot
Ans. ExceptionHandler is Used to handle at Method level

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   Like         Discuss         Correct / Improve     @ExceptionHandler

 Q789. Which Java libraries are most useful for your work as a Java developer?General
 This question is still unanswered. Can you please provide an answer.


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 Q790. What are the main limitations of Java as programming language?General
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 Q791. What is the difference between bubble sort using Java and C++ ?Programming Language
 This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     C++ vs Java

 Q792. Does Hashtable in Java use stack operation ?Core Java
 This question is still unanswered. Can you please provide an answer.


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 Q793. Which Technology/Programming Language will Lead Future?General
 This question is still unanswered. Can you please provide an answer.


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 Q794. If Java will die in next few year what will you do ?Programming Language
 This question is still unanswered. Can you please provide an answer.


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 Q795. How you can check Object is created or not in case of Singleton using Object class method ?Design
Ans. Reflections-- setAccesible--avoid using enumns

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   Like         Discuss         Correct / Improve          Asked in 1 Companies

 Q796. Differences between class not found exception and noclassdef found error ?Core Java
Ans. ClassNotFoundException is an exception that occurs when we try to load a class at run time using Class.forName() or loadClass() methods and mentioned classes are not found in the classpath.

NoClassDefFoundError is an error that occurs when a particular class is present at compile time, but was missing at run time.

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   Like         Discuss         Correct / Improve     exception handling  ClassNotFoundException  NoClassDefFoundError     Asked in 1 Companies

 Q797. Have you ever changed IAM policy ?Amazon Web Services (AWS)
Ans. Yes I did it for an execution role of a Lambda function to give it write access on S3 bucket.

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   Like         Discuss         Correct / Improve     aws security  aws iam  amazon iam

 Q798. How can we schedule Lambda function to run daily ?Amazon Web Services (AWS)
Ans. We can schedule that through CloudWatch.

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   Like         Discuss         Correct / Improve     lambda function  aws lambda  aws serverless computing  amazon cloud serverless computing  amazon lambda function  aws cloudwatch  amazon cloudwatch

 Q799. Have you ever heard of the term "dry run" ? What does it mean ?Testing
Ans. It means that the run is just for testing purpose.

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   Like         Discuss         Correct / Improve     dry run

 Q800. Have you ever scrapped any content from a web page using any of the web scrapping library ?
Ans. Yes, I have used HTMLUnit and crawler4j for doing so.

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 Q801. Have you ever worked on a project that involved reading RSS Feeds ? What framework / library did you use ?
 This question is still unanswered. Can you please provide an answer.


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 Q802. How can we make an S3 file public through Java program ?Amazon Web Services (AWS)
Ans. We can get the object and then can set CannedAcl property as "PublicRead"

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   Like         Discuss         Correct / Improve     aws s3  aws storage  amazon cloud storage  amazon s3

 Q803. Can making the S3 bucket public ,makes all objects / files inside as public too ?Amazon Web Services (AWS)
 This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve     aws s3  aws storage  amazon cloud storage  amazon s3

 Q804. What would you do if you see an error thrown by a lambda function as "Access Denied" while doing something with S3 ?Amazon Web Services (AWS)
Ans. Just like people , AWS resources too have execution roles or permissions. Seems like in such a situation Lambda function may not have sufficient privileges to perform operations on S3. For example - The execution role of Lambda may just have read permissions on S3 and we may be trying to perform PutObject operation.

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   Like         Discuss         Correct / Improve     aws s3  aws storage  amazon cloud storage  amazon s3  aws lambda  aws serverless computing  amazon cloud serverless computing  amazon lambda

 Q805. What is a component, service, directive and pipe ? Angular Js
 This question is still unanswered. Can you please provide an answer.


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 Q806. Do we need to send the payload in the reducer ?NgRx
Ans. No It's optional.

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 Q807. What is the flow or steps performed within the Reducer method ?NgRx
Ans. Respond to the Action Type
Access the Pay load
Compose a New State
Respond a new state

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 Q808. What is state management ?NgRx
 This question is still unanswered. Can you please provide an answer.


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 Q809. Difference between reducer and meta reducers ?NgRx
Ans. A Meta Reducer is a higher order reducer or function ithat may receive a function as parameter or even return a function.

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 Q810. Difference between StoreModule.forRoot() and StoreModule.forFeature() ?NgRx
Ans. forFeature is used for lazily registering reducers with the module.

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   Like         Discuss         Correct / Improve     ngrx    angular   angular ngrx integration  ngrx store

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