Synoptics Technologies Devops Engineer Interview Questions and Answers

It was of 75 minutes. And Questions are related from Quantitative, logical reasoning and Coding.

DSA Questions were asked there

Q1. Four Pillars of OOPS in Java?
Ans. 
Encapsulation, Inheritance, Polymorphism, Abstraction are the four pillars of OOPS in Java.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the implementation details and showing only the necessary features.
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Q2. What is a constructor in Java?
Ans. 
A constructor in Java is a special type of method that is used to initialize objects.
• Constructors have the same name as the class they are in.

• They do not have a return type, not even void.

• Constructors are called when an object of a class is created.

• Example: public class Car { public Car() { // constructor code } }
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Q1. OOP questions SQL Questions Programming structure
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Q1. SQL questions MVC and C# related questions
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Q1. What is the difference between classes and struct
Ans. 
Classes are reference types while structs are value types.
• Classes support inheritance while structs do not.

• Classes have default access modifier as internal while structs have it as private.

• Classes have a destructor while structs do not.

• Classes are allocated on heap while structs are allocated on stack.

• Classes can be null while structs cannot.
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Q2. Dispatch Queue vs operations
Ans. 
Dispatch Queue is a thread-safe way to execute tasks asynchronously, while Operations are a way to encapsulate tasks.
• Dispatch Queue is a high-level API for managing concurrent operations.

• Operations are objects that encapsulate a single task or multiple tasks.

• Dispatch Queue is simpler to use and recommended for most use cases.

• Operations provide more control over task dependencies and cancellation.

• Both can be used togeth
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Q1. What is a pointer to pointer
Ans. 
A pointer to pointer is a variable that stores the memory address of another pointer variable.
• It is used to create dynamic data structures like linked lists and trees.

• It allows multiple levels of indirection.

• It is denoted by ** in C and C++.

• Example: int **ptr;

• Example: ptr = &p; where p is a pointer variable.
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Q2. Class, object, inheritance, polymorphism,dbms
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Duration is around 1 hour

Q1. 1. Basic programming concepts 2. OOP concepts and basic problem solving skills
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Q1. Programming question
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Q1. 1. Basic questions
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They mostly ask some basic dsa questions in the automated interview

Q1. The interviewer was very friendly and ask me some basic of react js and some basic of how internet works
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Q1. Was very easy they ask me really basic ye questions
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