DBS Bank Software Developer Interview Questions and Answers

Mcq+coding which are medium level questions

Q1. Multiple inheritance allowed in java?
Ans. 
No, multiple inheritance is not allowed in Java.
• Java does not support multiple inheritance for classes to avoid the diamond problem.

• However, multiple inheritance is allowed for interfaces in Java.

• Example: class A extends B, C is not allowed, but interface X extends Y, Z is allowed.
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Q2. Diff btw static and final
Ans. 
Static is used to define class-level variables and methods, while final is used to define constants and prevent inheritance or modification.
• Static variables and methods belong to the class itself, while final variables cannot be changed once initialized.

• Static members can be accessed without creating an instance of the class, while final members must be accessed through an instance.

• Static variables are shared among all...read more
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Q3. What is data encapsulation?
Ans. 
Data encapsulation is the concept of bundling data and methods that operate on the data into a single unit, known as a class.
• Encapsulation hides the internal state of an object and only exposes the necessary functionalities through methods.

• It helps in achieving data abstraction and information hiding.

• Example: A class 'Car' encapsulates data like speed, color, and methods like accelerate() and brake().
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Q1. Tell me about yourself
Ans. 
I am a passionate software developer with experience in Java, Python, and web development.
• Experienced in Java, Python, and web development technologies

• Strong problem-solving skills

• Team player with excellent communication skills
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Q2. What are company core values
Ans. 
Company core values are the fundamental beliefs that guide the behavior and decisions of employees.
• Integrity - acting with honesty and transparency in all dealings

• Innovation - constantly seeking new and better ways to solve problems

• Customer focus - prioritizing the needs and satisfaction of customers

• Teamwork - collaborating effectively with colleagues to achieve common goals
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It was data structures and algorithm

Q1. What is friend function
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Q2. Basic definitions of oops
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Q1. Explain event driven architecture of node.js
Ans. 
Node.js uses event-driven architecture where events trigger callbacks to handle asynchronous operations.
• Node.js uses event loop to handle asynchronous operations efficiently

• Events are emitted by various objects in Node.js like HTTP servers, file system, etc.

• Callbacks are registered to handle events and execute code when events occur
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Q1. Explain Encapsulation
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and only exposing necessary functionalities.

• It allows for better control over the data by preventing direct access from outside the class.

• Encapsulation also helps in achieving data abstraction and information hiding.

• Example: In a class representing a car, th...read more
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Q2. How to call rest API
Ans. 
To call a REST API, you can use tools like Postman or code in languages like JavaScript or Python.
• Use tools like Postman to make HTTP requests to the API endpoints

• In programming languages like JavaScript, use libraries like Axios or Fetch to make API calls

• Include necessary headers, parameters, and authentication tokens in the request

• Handle the response data accordingly, whether it's JSON, XML, or other formats
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Q1. Java. , Spring boot
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Basic data structure related coding questions like creating a linked list and adding items to it median.
Max heap implementation.
Concurrency related questions.

Q1. Senior developer was taking the round, covering all design and architecture related questions. I was able to give a satisfactory solution.
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Q1. Just some behavioural question along with a lil bit technical questions. Asked me about my current projects and problems faced, how i gave a proper solution and how i help my team to grow.
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It had more than 30 aptitude questions and 2 coding questions

Q1. It was totally a tech round all questions were from Data structure, dbms, java, computer networking
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