10+ SIB Operations and Services Interview Questions and Answers

Agile is iterative and flexible, while waterfall is sequential and rigid.

• Agile focuses on delivering working software in short iterations, while waterfall follows a linear sequential approach.

• Agile allows for changes and adaptations throughout the project, while waterfall requires detailed planning upfront.

• Agile promotes collaboration and communication within the team, while waterfall has distinct phases with minimal communication between them.

• Agile is better suited for proje...read more

Polymorphism is the ability of an object to take on many forms.

• It allows objects of different classes to be treated as if they are objects of the same class.

• It is achieved through method overriding and method overloading.

• Example: A parent class Animal can have child classes like Dog, Cat, and Bird. All these child classes can inherit the properties of the parent class and have their own unique properties and methods.

• Polymorphism helps in achieving code reusability and flexibi...read more

Method overriding is a feature in object-oriented programming where a subclass provides its own implementation of a method that is already defined in its parent class.

• Method overriding is used to achieve runtime polymorphism.

• The method in the subclass must have the same name, return type, and parameters as the method in the parent class.

• The access level of the overriding method cannot be more restrictive than the overridden method.

• Example: class Dog extends Animal { void make...read more

Object-Oriented Programming concepts that help in creating modular and reusable code.

• Encapsulation - bundling of data and methods that operate on that data

• Inheritance - creating new classes from existing ones

• Polymorphism - ability of objects to take on multiple forms

• Abstraction - hiding implementation details and showing only functionality

• Examples: Class, Object, Inheritance, Encapsulation, Polymorphism, Abstraction

Inheritance is a mechanism in object-oriented programming where a new class is created from an existing class.

• It allows the new class to inherit the properties and methods of the existing class.

• The existing class is called the parent or superclass, while the new class is called the child or subclass.

• The child class can add new properties and methods or override the ones inherited from the parent class.

• Inheritance promotes code reuse and makes it easier to maintain and update ...read more

The backend class for a Lightning Web Component (LWC) should handle data retrieval, manipulation, and communication with Salesforce.

• Create an Apex class with @AuraEnabled methods to be called from the LWC component

• Use SOQL queries to retrieve data from Salesforce database

• Implement logic for data manipulation and business processes

• Handle error messages and exceptions appropriately

• Utilize Apex triggers and classes for complex operations

A user story is a concise description of a feature told from the perspective of the end user.

• Describes the feature from the user's point of view

• Includes who, what, and why of the feature

• Written in a simple, non-technical language

• Used in Agile development to capture requirements

A test matrix is a document that outlines the testing strategy and provides information on what to test, how to test, and when to test.

• A test matrix contains information on test cases, test data, and expected results.

• It helps in identifying the testing scope and coverage.

• It also includes information on the testing environment and tools used.

• Examples of test matrices include functional test matrix, integration test matrix, and regression test matrix.

Yes, callouts can be made from triggers in Salesforce.

• Callouts can be made from triggers using @future annotation to make asynchronous callouts.

• It is recommended to use @future annotation to avoid hitting governor limits.

• Make sure to handle any potential exceptions that may occur during the callout.

Program to find factorial of a number

• Use a loop to multiply the number with all the numbers below it

• Handle the case when the number is 0 or 1 separately

• Use recursion to find factorial of a number