DXC Technology
10+ St. Marys Convent School Interview Questions and Answers
Q1. OOPs features, what is a carriage return, the syntax for making a 2D matrix, what is nested loop incase of the switch statement
Questions on OOPs features, carriage return, 2D matrix syntax, and nested loops in switch statement.
OOPs features include encapsulation, inheritance, and polymorphism.
A carriage return is a character that moves the cursor to the beginning of the next line.
The syntax for making a 2D matrix is: int matrix[][] = new int[rows][columns];
A nested loop in a switch statement is used to handle multiple cases with the same code block.
Q2. What is the difference between Abstraction and Interface?
Abstraction is hiding implementation details while Interface is a contract for implementing classes.
Abstraction is achieved through abstract classes and methods.
Interface defines a set of methods that a class must implement.
Abstraction focuses on hiding complexity and providing a simpler interface.
Interface focuses on defining a standard for communication between classes.
Abstraction is a way to achieve modularity and maintainability.
Interface is a way to achieve polymorphism ...read more
Q3. What is perform? Mention its different types.
Perform refers to carrying out a task or activity. Its types include job performance, academic performance, and athletic performance.
Perform refers to the execution of a task or activity.
Job performance refers to how well an employee performs their job duties.
Academic performance refers to a student's success in their studies.
Athletic performance refers to an athlete's ability to perform in their sport.
Other types of performance include musical performance, theatrical perform...read more
Q4. What is the difference between a table and a view?
A table is a physical storage structure while a view is a virtual table created from a query.
A table stores data in a structured manner while a view is a virtual table created from a query.
A table can have indexes and constraints while a view cannot.
A table can be updated, inserted or deleted while a view cannot be directly modified.
A view can be used to simplify complex queries or restrict access to certain columns of a table.
Example: A table named 'employees' can have a vie...read more
Q5. What are the layers of the OSI model?
The OSI model has 7 layers that define how data is transmitted over a network.
The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer has a specific function and communicates with the layers above and below it.
For example, the Physical layer deals with the physical transmission of data, while the Application layer deals with user interfaces and applications.
The OSI model is a conceptual model and is used to help understand ho...read more
Q6. What do you know about DXC?
DXC is a global IT services company that provides end-to-end solutions for clients in various industries.
DXC was formed in 2017 through the merger of CSC and the Enterprise Services business of Hewlett Packard Enterprise.
They offer services in areas such as cloud computing, cybersecurity, analytics, and digital transformation.
DXC has clients in industries such as healthcare, finance, manufacturing, and government.
They have a global workforce of over 130,000 employees.
DXC is h...read more
Q7. What is Polymorphism?
Polymorphism is the ability of an object to take on many forms.
It allows objects of different classes to be treated as if they were objects of the same class.
It is achieved through method overriding and method overloading.
Example: A shape class can have different subclasses like circle, square, and triangle, each with their own implementation of the draw method.
Example: A method can take in different types of objects as parameters, and the appropriate method will be called ba...read more
Q8. What is SQL Error 911?
SQL Error 911 is a database connection error that occurs when the maximum number of concurrent connections has been reached.
Occurs when the maximum number of concurrent connections has been reached
Can be resolved by increasing the maximum number of connections allowed
May also be caused by insufficient memory or disk space
Commonly seen in IBM DB2 databases
Q9. Which database you have used for practical in SQL subject
I have used MySQL for practical in SQL subject.
MySQL is a popular open-source relational database management system.
I have practiced creating tables, querying data, and performing various operations in MySQL.
I have also worked with MySQL Workbench for database design and management.
Q10. What is the lastest technology that you have learnt
The latest technology I have learned is artificial intelligence (AI).
AI is a branch of computer science that focuses on creating intelligent machines capable of performing tasks that typically require human intelligence.
Some examples of AI applications include virtual assistants like Siri and Alexa, self-driving cars, and recommendation systems.
I have learned about different AI techniques such as machine learning, natural language processing, and computer vision.
Q11. What is OS? And paging techniques
OS stands for Operating System. Paging is a memory management technique used by OS to store and retrieve data from secondary storage.
OS is a software that manages computer hardware resources and provides common services for computer programs.
Paging is a memory management scheme that eliminates the need for contiguous allocation of physical memory.
Paging allows the operating system to use virtual memory, which is larger than physical memory.
Examples of paging techniques includ...read more
Q12. What are four pillars of oops
Four pillars of OOPs are Abstraction, Encapsulation, Inheritance, and Polymorphism.
Abstraction: Hiding implementation details and showing only necessary information.
Encapsulation: Binding data and functions together and restricting access to data.
Inheritance: Creating new classes from existing ones, inheriting properties and methods.
Polymorphism: Ability of objects to take on multiple forms or behaviors.
Q13. What is data structure and linked list
Data structure is a way of organizing and storing data in a computer so that it can be accessed and used efficiently. A linked list is a linear data structure where elements are stored in nodes and each node points to the next node in the sequence.
Data structure organizes and stores data efficiently
Linked list is a linear data structure with nodes pointing to next node
Example: Singly linked list, doubly linked list
Q14. How to implement a project in sap
To implement a project in SAP, you need to follow a structured approach involving planning, configuration, testing, and deployment.
Define project scope and objectives
Gather requirements from stakeholders
Configure SAP system based on requirements
Test the system to ensure functionality and performance
Train end users on using the new system
Deploy the project and monitor for any issues
Provide ongoing support and maintenance
Q15. what is java, oops, dsa, etc
Java is a popular programming language, OOPs stands for Object-Oriented Programming, DSA refers to Data Structures and Algorithms.
Java is a high-level, class-based, object-oriented programming language known for its portability and versatility.
OOPs is a programming paradigm based on the concept of 'objects', which can contain data in the form of fields and code in the form of procedures.
DSA involves the study of data structures (like arrays, linked lists, trees) and algorithm...read more
Q16. What is data encapsulation
Data encapsulation is the process of hiding implementation details and exposing only necessary information.
It is a fundamental concept in object-oriented programming.
It helps in achieving data abstraction and information hiding.
It allows for better control over data and prevents unauthorized access.
Example: A class in Java that has private variables and public methods to access them.
Example: A capsule that contains medicine and only allows access through a small opening.
Q17. what are abstract classes
Abstract classes are classes that cannot be instantiated and are meant to be subclassed.
Abstract classes may contain abstract methods that must be implemented by subclasses.
Abstract classes can have both abstract and concrete methods.
An example of an abstract class in Java is 'Shape', with abstract methods like 'calculateArea' and concrete methods like 'draw'.
Q18. what is an interface
An interface is a point of interaction between components, devices, or systems.
An interface defines the methods that a class must implement
Interfaces allow for multiple inheritance in programming languages like Java
Interfaces are used to enforce a contract between different parts of a system
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