ACE Group Software Developer Interview Questions and Answers

Q1. Basic Oops Concepts
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Q2. 4 Pillars of oops
Ans. 
Encapsulation, Inheritance, Polymorphism, Abstraction are the 4 pillars of OOPs
• Encapsulation: Bundling data and methods that operate on the data into a single unit

• Inheritance: Ability of a class to inherit properties and behavior from another class

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

• Abstraction: Hiding the complex implementation details and showing only the necessary features
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Q1. Tell me about yourself
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Q2. What is the difference between HTTp and HTTPS
Ans. 
HTTP is unsecured protocol while HTTPS is secured protocol using SSL/TLS encryption.
• HTTP stands for Hypertext Transfer Protocol, while HTTPS stands for Hypertext Transfer Protocol Secure.

• HTTPS uses SSL/TLS encryption to secure the communication between the client and server, while HTTP does not.

• HTTPS uses port 443 by default, while HTTP uses port 80.

• HTTPS URLs begin with 'https://' and are secured with a padlock icon i...read more
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Q1. What is java? What is variable?
Ans. 
Java is a popular programming language used for developing various applications. A variable is a named memory location used to store data.
• Java is an object-oriented language

• It is platform-independent

• Variables in Java have a specific data type

• Variables can be assigned values and their values can be changed

• Example: int age = 25; String name = "John";
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Q2. What is inheritance? types of inheritance
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Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.
• Inheritance allows code reuse and promotes code organization.

• There are different types of inheritance: single inheritance, multiple inheritance, multilevel inheritance, and hierarchical inheritance.

• Single inheritance involves a class inheriting from a single base class.

• Multiple inheritance involves...read more
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Q3. 1.Java is a high level language 2.java is a programme is called a set of instructions 3.java run time environment (jre) 4.java is a platform independent. Variable: A variable which is container that some d...read more
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Q4. Inheritance; 1.Acquring the properties of parent class to the child class with out changeing the properties of parent class is known as inheritance 2.inheritanc is a is relationship 3.extends keyword is us...read more
Ans. 
Inheritance is acquiring properties of parent class to child class without changing parent class properties. It is classified into 5 types.
• Inheritance is a way to reuse code and establish a relationship between classes

• The 'extends' keyword is used to implement inheritance in Java

• Examples of inheritance include a 'Car' class inheriting properties from a 'Vehicle' class

• Single level inheritance involves one parent class a...read more
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May I about you ? Which your qualification and which stream

30 technical questions

Q1. Technical process
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Q2. What are oops concept
Ans. 
Object-oriented programming concepts that focus on objects and classes.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

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

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

• Abstraction: Hiding the complex implementation details and showing only the necessary features.
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Q1. Oops questions Database SQL Logic building along with case study
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Test was hard, needs to prepared very well

Round duration - 60 minutes
Round difficulty - Easy

This was a technical interview round with questions on C, C++ and Windows.

Q1. What is the difference between C and C++?
Ans. 
C is a procedural programming language while C++ is an object-oriented programming language with features like classes and inheritance.
• C is a procedural programming language while C++ is a multi-paradigm language with support for object-oriented programming.

• C does not support classes and objects, while C++ does.

• C does not have features like inheritance and polymorphism which are present in C++.

• C is a subset of C++.

• C++ ...read more
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Q2. What are access specifiers in C++?
Ans. 
Access specifiers in C++ are keywords used to define the accessibility of class members.
• Access specifiers include public, private, and protected.

• Public members are accessible from outside the class.

• Private members are only accessible within the class.

• Protected members are accessible within the class and its subclasses.

• Example: class MyClass { private: int x; public: void setX(int val) { x = val; } };

• Example: MyClass ob
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Q3. How do you open Device Manager in Windows?
Ans. 
Device Manager can be opened in Windows by using the Run dialog box or searching in the Start menu.
• Press Windows key + R to open the Run dialog box, then type 'devmgmt.msc' and press Enter

• Search for 'Device Manager' in the Start menu and click on the result to open it
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Q4. How do you open the command prompt in Windows?
Ans. 
To open the command prompt in Windows, you can use the search bar or keyboard shortcuts.
• Use the search bar and type 'cmd' or 'command prompt'

• Press Windows key + R, then type 'cmd' and press Enter
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Round duration - 30 minutes
Round difficulty - Easy

HR interview can be a bit tricky. They will try to see your creativity in your answers so just be yourself and be confident.

An aptitude test is an exam used to determine an individual's skill or propensity to succeed in a given activity

Programming questions are an integral part of an interview for the developer's position