10+ Neolite Infotech Interview Questions and Answers

A class is a blueprint for creating objects that have properties and methods. Functions are written inside a class to define its behavior.

• A class is a user-defined data type that encapsulates data and functions that operate on that data.

• Functions written inside a class are called methods and are used to define the behavior of the class.

• The role of a class is to provide a template for creating objects that share common properties and behavior.

• Classes allow for code reusability...read more

Reverse a dictionary in Python

• Create a new dictionary with values as keys and keys as values

• Use dictionary comprehension to create the new dictionary

• If there are duplicate values, use a list comprehension to create a list of keys

• Use the built-in function 'reversed' to reverse the order of the keys or values

Python is a high-level, interpreted programming language known for its simplicity and ease of use.

• Dynamic typing and automatic memory management

• Support for multiple programming paradigms such as procedural, object-oriented, and functional programming

• Extensive standard library with modules for a wide range of tasks

• Cross-platform compatibility

• Easy to learn and read syntax

• Large and active community with a wealth of resources and support

• Used in a variety of applications such as w...read more

Primary key uniquely identifies a record in a table, while foreign key refers to a field in another table.

• Primary key is unique and cannot be null

• Foreign key establishes a relationship between two tables

• Primary key can be used as a foreign key in another table

• Example: CustomerID in Orders table is a foreign key referencing Customer table's primary key

Slicing is a way to extract a portion of a sequence (string, list, tuple) in Python.

• Slicing is done using the colon (:) operator.

• The syntax for slicing is [start:stop:step].

• start is the index where the slice starts (inclusive), stop is the index where the slice ends (exclusive), and step is the size of the jump between indices.

• If start or stop is not specified, it defaults to the beginning or end of the sequence.

• If step is not specified, it defaults to 1.

• Examples: 'hello'[1:4...read more

List and tuple are both data structures in Python used to store collections of items.

• Lists are mutable and can be modified after creation.

• Tuples are immutable and cannot be modified after creation.

• Lists are defined using square brackets [], while tuples are defined using parentheses ().

• Lists are typically used for collections of similar items, while tuples are used for collections of different items.

• Lists have several built-in methods for manipulation, such as append(), remov...read more

Oops concept is a programming paradigm that focuses on objects and their interactions to solve problems.

• Encapsulation - hiding implementation details

• Inheritance - creating new classes from existing ones

• Polymorphism - using a single interface to represent multiple types

• Abstraction - simplifying complex systems by breaking them down into smaller, more manageable parts

Arrays are fixed in size and store homogeneous data types, while lists are dynamic and can store heterogeneous data types.

• Arrays are declared with a fixed size, while lists can grow or shrink dynamically.

• Arrays can only store elements of the same data type, while lists can store elements of different data types.

• Arrays are accessed using an index, while lists are accessed using an iterator.

• Arrays are more efficient for accessing elements, while lists are more efficient for ins...read more

Truncate removes all records from a table, while drop deletes the table itself.

• Truncate is a DDL command, while drop is a DDL command.

• Truncate is faster than drop as it does not log individual row deletions.

• Truncate can be rolled back, while drop cannot be rolled back.

• Truncate resets the identity seed of the table, while drop does not.

• Example: TRUNCATE TABLE TableName; DROP TABLE TableName;

Methods to communicate between components in Angular include Input and Output properties, ViewChild, Services, and Event Emitters.

• Using Input and Output properties to pass data from parent to child components and emit events from child to parent components.

• Using ViewChild to access child components from parent components.

• Using Services to create a shared service that can be injected into multiple components to share data.

• Using Event Emitters to emit custom events that can be ...read more

Angular Directives are markers on a DOM element that tell AngularJS's HTML compiler to attach a specified behavior to that DOM element.

• Directives are used to create reusable components or custom behaviors in Angular applications.

• They can be used to manipulate the DOM, add event listeners, show/hide elements, etc.

• Examples include ngModel, ngIf, ngFor, etc.