Interview Questions and Answers for 'T' | Search Interview Question

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Q2131. Difference between interface and class in typescript ?

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Q2132. Why type has been deprecated and replaced by interfaces ?

TypeScript

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Q2133. Can we set specific return type of a method in typescript ?

TypeScript

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Q2134. What is the use of map method in typescript ?

TypeScript

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Q2135. What is type script ? What are the advantages of typescript ? How is it different than javascript ?

TypeScript

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Q2136. What are the features of TypeScript ?

TypeScript

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Q2137. How to compile typescript ?

TypeScript

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Q2138. Can we compile multiple type script files together ? How ?

TypeScript

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Q2139. Difference between constructor and NGInit ?

Angular Js

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Q2140. Difference between git init and git clone ?

Git

Ans. "git init" creates an empty repository or can make an existing directory a git repository while "git clone" first internally calls "git init" to create an empty git repository and then copy the data from the specified remote repository.

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Q2141. difference between git add , git commit and git push ?

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Q2142. What is the purpose of rebasing the branch

Git

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Q2143. Difference between git fetch and git pull ?

Git

Ans. git pull does a git fetch followed by a git merge. git fetch only change the remote tracking but never attempts to make changes to the local.

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Q2144. Can making the S3 bucket public ,makes all objects / files inside as public too ?

Amazon Web Services (AWS)

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Q2145. 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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Q2146. 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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Q2147. How can we schedule Lambda function to run daily ?

Amazon Web Services (AWS)

Ans. We can schedule that through CloudWatch.

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Q2148. 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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Q2149. 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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Q2150. 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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Q2151. 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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Q2152. Explain hibernate associations.

Hibernate

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Q2153. 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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Q2154. 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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Q2155. What does the following code

MockitoAnnotations.initMocks(this);

Mockito

Ans. Initializes objects annotated with Mockito annotations

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Q2156. What is doCallRealMethod() method used for ?

PowerMock

Ans. When we Mock an object and then make a reference to any method using mocked object reference , java never makes a call to that method and looks for mocked value to be returned or null if none specified. But If we want that to be overridden and want java to make actual method call upon using mocked object reference, this method can be used.

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Q2157. What is @EnableSptringMVC ?

Spring

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Q2158. What is the Main Advantage of the native Key Word?

Core Java

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Q2159. What is strictfp Modifier?

Core Java

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Q2160. Detect a loop in a linked list

Data Structure

Ans. Work with two pointers on the linked list - a slow pointer (increments by one node) and a fast pointer (increments by two nodes). If both of these pointers meet at the same node, then there is a cycle in the linked list. Otherwise, no cycle.

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