10+ Technical Consultant Interview Questions and Answers for Freshers

Spring is widely used in Java for building enterprise-level applications.

• Dependency Injection

• Aspect-Oriented Programming

• Spring MVC for web applications

• Spring Boot for microservices

• Spring Security for authentication and authorization

• Spring Data for database access

• Integration with other frameworks like Hibernate and Struts

• Support for testing with JUnit and Mockito

Effective teaching involves understanding the students' learning styles, creating engaging lessons, and providing opportunities for practice and feedback.

• Identify the students' learning styles and adapt teaching methods accordingly

• Create interactive and engaging lessons that cater to different learning styles

• Provide opportunities for practice and feedback to reinforce learning

• Encourage active participation and collaboration among students

• Use real-life examples and case studie...read more

Real-time examples of OOPs concepts in Java

• Inheritance: A car is a vehicle, so Car class can inherit from Vehicle class

• Polymorphism: A shape can be a circle or a square, so Shape class can have draw() method overridden by Circle and Square classes

• Encapsulation: A bank account has balance and transactions, but they are hidden from the user

• Abstraction: A TV remote has buttons to change channels and volume, but the user doesn't need to know how it works

Constructed data is organized and formatted, while unconstructed data is raw and unorganized.

• Constructed data is organized and formatted in a specific way for easy access and analysis.

• Unconstructed data is raw and unorganized, requiring processing before it can be used effectively.

• Examples of constructed data include databases, spreadsheets, and structured documents.

• Examples of unconstructed data include raw text files, images, and audio recordings.

No, Java does not support pointers like in languages such as C or C++.

• Java uses references instead of pointers

• References in Java point to objects on the heap

• Example: String str = new String("Hello");

To select 100 lines in a table in SQL, we can use the LIMIT clause.

• Use the LIMIT clause in SQL to specify the number of rows to return.

• The syntax is: SELECT * FROM table_name LIMIT 100;

• You can also use OFFSET to skip a certain number of rows before starting to return rows, for example: SELECT * FROM table_name LIMIT 100 OFFSET 50;

A diode is a semiconductor device that allows current to flow in one direction only. The terminal of a diode includes an anode and a cathode.

• Diodes are commonly used in rectifier circuits to convert AC to DC.

• The anode of a diode is the positive terminal, while the cathode is the negative terminal.

• Diodes have a forward voltage drop, typically around 0.7V for silicon diodes.

• Reverse biasing a diode blocks current flow.

• Zener diodes are used for voltage regulation.

I use a variety of teaching strategies to cater to different learning styles and engage learners.

• I assess the learning style of each individual and tailor my teaching approach accordingly.

• I use a combination of lecture, discussion, hands-on activities, and multimedia resources to keep learners engaged.

• I encourage active participation and provide opportunities for learners to apply what they have learned.

• I provide regular feedback and support to help learners achieve their goa...read more

I rate myself 8 out of 10 in Java programming language.

• Strong understanding of object-oriented programming concepts

• Experience in developing web applications using Java frameworks like Spring

• Proficient in writing efficient and scalable code

• Familiar with Java libraries and tools for testing and debugging

• Continuous learning and improvement in Java programming skills

Oops concepts in Java refer to Object-Oriented Programming principles such as Inheritance, Encapsulation, Polymorphism, and Abstraction.

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

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction hides the implementation details and only shows the necessary features to the out...read more

Some top features of Java include platform independence, object-oriented, robust, secure, and multithreaded.

• Platform independence - Java code can run on any platform that has a Java Virtual Machine (JVM)

• Object-oriented - Java supports the principles of object-oriented programming

• Robust - Java is designed to eliminate error-prone situations by emphasizing compile-time error checking and runtime checking

• Secure - Java provides a secure environment with features like bytecode ver...read more

An electrical diagram is a visual representation of an electrical circuit or system.

• Electrical diagrams use symbols to represent components and connections in a circuit.

• They help in understanding the flow of electricity and troubleshooting issues.

• Common types of electrical diagrams include schematic diagrams, wiring diagrams, and block diagrams.