10+ Assistant Software Engineer Interview Questions and Answers for Freshers

Multithreading is the ability of a CPU to execute multiple threads concurrently. Multitasking is the ability of an OS to run multiple tasks concurrently. Multiprocessing is the ability of a system to have multiple CPUs.

• Multithreading allows for concurrent execution of multiple threads within a single process.

• Multitasking allows for concurrent execution of multiple processes within an OS.

• Multiprocessing allows for concurrent execution of multiple processes across multiple CPUs...read more

String is Immutable means it cannot be changed once created.

• Immutable means unchangeable or cannot be modified.

• In programming, when we say string is immutable, it means that once a string object is created, its value cannot be changed.

• Any operation that appears to modify a string actually creates a new string object with the modified value.

• For example, if we concatenate two strings, a new string object is created with the concatenated value.

• This is different from mutable obje...read more

Graph data structure is a collection of nodes and edges that represent connections between them.

• Nodes represent entities and edges represent relationships between them

• Graphs can be directed or undirected

• Examples include social networks, road networks, and computer networks

RDBMS - Relational Database Management System, HTTP - Hypertext Transfer Protocol, HTTPS - Hypertext Transfer Protocol Secure, RAM - Random Access Memory, HTML - HyperText Markup Language, CSS - Cascading Style Sheets

• RDBMS: Relational Database Management System (e.g. MySQL, Oracle)

• HTTP: Hypertext Transfer Protocol (used for communication between web servers and clients)

• HTTPS: Hypertext Transfer Protocol Secure (encrypted version of HTTP)

• RAM: Random Access Memory (temporary st...read more

Generics allow classes, interfaces, and methods to be written with type parameters.

• Generics provide type safety and reduce code duplication.

• They allow for the creation of reusable code.

• Examples include List, Dictionary, and Nullable.

• Generics are used extensively in Java and C# programming languages.

I am proficient in SQL and prefer Java for coding. I have worked on projects involving database design and optimization.

• Proficient in SQL for database management

• Prefer Java for coding

• Worked on projects involving database design and optimization

Deadlock is a situation where two or more processes are unable to proceed because they are waiting for each other to release resources.

• Deadlock occurs when two or more processes are blocked and unable to continue executing.

• It happens when each process is holding a resource and waiting for another resource held by another process.

• Deadlock can be prevented by using techniques like resource allocation graph and banker's algorithm.

• Examples of resources that can cause deadlock inc...read more

C++ is a statically typed language with manual memory management, while Java is a dynamically typed language with automatic memory management.

• C++ is compiled directly to machine code, while Java is compiled to bytecode and runs on a virtual machine (JVM)

• C++ supports multiple inheritance, while Java supports only single inheritance through classes and multiple inheritance through interfaces

• C++ has pointers and allows direct memory manipulation, while Java does not have pointer...read more

GitHub is a web-based platform for hosting and collaborating on Git repositories.

• GitHub is a web-based platform for hosting Git repositories.

• Git is a version control system that tracks changes in files.

• GitHub provides additional features like issue tracking, pull requests, and project management.

• Git is a command-line tool used for version control.

Types of inheritance include single, multiple, multilevel, hierarchical, hybrid, and so on.

• Single inheritance: a class inherits from only one base class.

• Multiple inheritance: a class inherits from more than one base class.

• Multilevel inheritance: a class inherits from a class which in turn inherits from another class.

• Hierarchical inheritance: multiple classes inherit from a single base class.

• Hybrid inheritance: a combination of multiple and multilevel inheritance.

• Example: clas...read more

Collections in Java are data structures that store and manipulate groups of objects.

• Collections framework provides interfaces (List, Set, Map) and classes (ArrayList, HashSet, HashMap) for storing and manipulating data.

• Collections offer methods for adding, removing, and accessing elements in a structured way.

• Collections in Java are type-safe, meaning they can only store objects of a specific type.

• Example: List names = new ArrayList<>(); names.add("Alice");

Oops concept in Java refers to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.

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

• Encapsulation hides the internal state of an object and only exposes necessary functionalities.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Abstraction focuses on the essential features of an object while hiding un...read more