Ker InfoTech Interview Questions and Answers

I am a passionate software engineer with 8 years of experience in developing scalable and efficient applications.

• Experienced in full stack development using technologies like Java, Spring Boot, Angular, and SQL

• Strong problem-solving skills and ability to work in a fast-paced environment

• Led a team of developers to successfully deliver a complex project on time and within budget

MVC is a software design pattern that separates an application into three main components: Model, View, and Controller.

• MVC stands for Model-View-Controller

• In MVC, Model represents the data and business logic, View represents the user interface, and Controller acts as an intermediary between Model and View

• 3-tier architecture typically consists of Presentation Layer, Business Logic Layer, and Data Access Layer

• In 3-tier a...read more

Thread priority determines the order in which threads are scheduled to run by the operating system.

• Thread priority is a value assigned to a thread that determines its importance relative to other threads.

• Higher priority threads are scheduled to run before lower priority threads.

• Thread priority can be adjusted by the operating system or the programmer.

• Examples: In Java, thread priority ranges from 1 (lowest) to 10 (high...read more

Types of authentication include password-based, multi-factor, biometric, and token-based authentication.

• Password-based authentication involves users entering a password to access a system.

• Multi-factor authentication requires users to provide multiple forms of verification, such as a password and a code sent to their phone.

• Biometric authentication uses unique physical characteristics like fingerprints or facial recognit...read more

SOLID is a set of five principles in object-oriented programming to make software designs more understandable, flexible, and maintainable.

• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Objects of a superclass should be replaceable with objects of it...read more

One design pattern I know is the Singleton pattern, which ensures a class has only one instance and provides a global point of access to it.

• Singleton pattern can be implemented in scenarios where only one instance of a class is needed, such as a logger class or a configuration class.

• It is commonly used in database connections, thread pools, and caching mechanisms.

• Example: Implementing a Singleton pattern for a database...read more

In 3 years, I see myself leading a team of software engineers, working on cutting-edge technologies, and contributing to the growth of the company.

• Leading a team of software engineers

• Working on cutting-edge technologies

• Contributing to the growth of the company