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I applied via Recruitment Consulltant and was interviewed in Sep 2022. There were 5 interview rounds.
DB connection should be opened in onCreate() and closed in onDestroy() method.
Open DB connection in onCreate() method.
Close DB connection in onDestroy() method.
Avoid opening and closing DB connection frequently.
Use SQLiteOpenHelper class to manage DB connection.
I applied via Referral and was interviewed before Sep 2021. There were 2 interview rounds.
OOPs concepts are fundamental to object-oriented programming. They include inheritance, encapsulation, abstraction, and polymorphism.
Inheritance: A child class can inherit properties and methods from a parent class. Example: A Car class can inherit from a Vehicle class.
Encapsulation: Hiding implementation details and exposing only necessary information. Example: A BankAccount class can hide the account balance.
Abstract...
Authentication is the process of verifying the identity of a user, while authorization is the process of granting access to specific resources.
Authentication confirms the user's identity through credentials such as username and password.
Authorization determines what resources the user can access based on their role or permissions.
Authentication precedes authorization in the security process.
Examples of authentication i...
Constructors are special methods used to initialize objects in a class.
Default constructor: no arguments
Parameterized constructor: one or more arguments
Copy constructor: creates a new object as a copy of an existing object
Static constructor: initializes static variables
Private constructor: restricts object creation outside the class
Index in SQL Server is used to improve query performance. There are different types of indexes.
Clustered index: sorts and stores data rows in the table based on their key values
Non-clustered index: contains a separate structure with the indexed columns and a pointer to the data rows
Unique index: ensures that the indexed columns contain unique values
Filtered index: indexes a subset of data rows based on a filter predica...
Developed a web application for a retail company to manage their inventory and sales.
Used React.js for the front-end and Node.js for the back-end
Implemented a database schema using MongoDB
Integrated Stripe API for payment processing
Implemented user authentication and authorization using JWT
Optimized application performance by implementing caching and lazy loading
ref is used for passing reference types by reference, out is used for returning values by reference.
Use ref when you want to modify the value of the parameter inside the method
Use out when you want to return multiple values from a method
ref requires the variable to be initialized before passing it to the method, out does not
ref can be used with both value and reference types, out can only be used with reference types
Middleware in .NET Core is a pipeline of components that handle requests and responses.
Middleware is added to the pipeline using the Use() method in Startup.cs
Middleware can modify the request or response, or pass it on to the next component in the pipeline
Examples of middleware include authentication, logging, and error handling
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I applied via Company Website and was interviewed before Dec 2020. There were 4 interview rounds.
I applied via Referral and was interviewed before Jan 2021. There was 1 interview round.
I applied via Campus Placement and was interviewed before Feb 2021. There were 3 interview rounds.
Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.
OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.
OOPs stands for Object-Oriented Programming System
Java is a class-based OOPs language
Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs
Objects have state and behavior
Java supports interfaces, which allow for multiple inheritance
Example: A car can be represented as an object wit...
Java solves machine dependency by using bytecode and virtual machine.
Java code is compiled into bytecode which is platform-independent
The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific
JVM translates bytecode into machine code for the specific platform
This allows Java code to run on any platform with a JVM installed
Example: A Java program compiled on Windows can run on Linux or Mac as
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
Numerical ability and logical reasoning followed by some coding mcqs
Printing 1 to 100 without for loop
Use recursion to print numbers from 1 to 99
Print 100 outside the recursion
Use a base case to stop recursion at 100
I applied via Campus Placement and was interviewed before Jun 2021. There were 2 interview rounds.
Simple aptitude test
I applied via Company Website and was interviewed before Jul 2021. There were 2 interview rounds.
Attended the codevita competition in final year of college.
I applied via Campus Placement and was interviewed before Aug 2021. There were 2 interview rounds.
It was a basic aptitude test.
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