Apisero Interview Questions and Answers

Aptitude,reasoning,verbal,C language,Java,C++

Q1. What is interface in JAVA
Ans. 
An interface in Java is a reference type that defines a contract for classes to implement methods without providing their implementation.
• Interfaces can contain method signatures and constants but no method bodies.

• A class implements an interface using the 'implements' keyword. Example: 'class MyClass implements MyInterface'.

• Multiple interfaces can be implemented by a single class, allowing for multiple inheritance of ty...read more
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Q2. Explain OOPS in JAVA
Ans. 
OOP in Java is a programming paradigm based on objects, enabling code reusability, encapsulation, inheritance, and polymorphism.
• Encapsulation: Bundling data and methods that operate on the data within one unit (class). Example: private variables with public getters/setters.

• Inheritance: Mechanism where one class inherits properties and behavior from another. Example: class Dog extends Animal.

• Polymorphism: Ability to pre...read more
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60 MCQ questions are there

Q1. Simple java questions are there
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Q2. Array list vs Linked List
Ans. 
Array list is faster for accessing elements by index, while Linked List is better for frequent insertions and deletions.
• Array list has constant time access to elements by index, while Linked List requires traversing the list to find an element.

• Linked List is better for frequent insertions and deletions as it only requires changing pointers, while Array list may require shifting elements.

• Array list uses contiguous memor...read more
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Exam went around one hour

Went around fourty five minutes

Q1. Tell me about yourself
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Q2. What are all the features of java 8
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Q1. Mulesoft basics and about platform
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Q2. Any point platform and any point studio
Ans. 
The question is likely asking about experience with a specific software platform and development environment.
• Experience with a specific software platform (e.g. AWS, Azure, Google Cloud)

• Experience with a specific development environment (e.g. Visual Studio, IntelliJ IDEA)

• Ability to work with different platforms and tools to develop software efficiently
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Q3. Best practices for better handling
Ans. 
Implementing best practices for better handling in software development.
• Use proper error handling techniques such as try-catch blocks

• Implement logging to track errors and exceptions

• Follow coding standards and conventions to ensure consistency

• Use defensive programming techniques to anticipate and handle unexpected inputs

• Regularly review and refactor code to improve maintainability
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Q4. Expected CTC and related stuff
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