10+ OSV Solutions Interview Questions and Answers

Permission sets are used to extend user permissions beyond what is granted by their profile.

• Profiles control overall access to objects, fields, and records for a user

• Permission sets grant additional permissions or access to specific objects, fields, or records

• Users can have multiple permission sets but only one profile

Memoization techniques involve storing the results of expensive function calls and returning the cached result when the same inputs occur again.

• Using a hash table to store previously computed results

• Implementing memoization with dynamic programming

• Memoizing recursive functions to avoid redundant calculations

HOC (Higher Order Components) in React are functions that take a component and return a new component with additional functionality.

• HOCs are a common pattern in React for code reuse, logic abstraction, and separation of concerns.

• They are used to enhance components with additional props, state, or lifecycle methods.

• Example: Creating a HOC that adds a loading spinner while data is being fetched from an API.

A generic button component for React

• Create a Button component with props for text, onClick function, and optional styles

• Use React's useState hook to manage button state if needed

• Implement onClick handler to trigger a function when button is clicked

• Allow for customization of button styles using props

Program using recursion

• Recursion is a technique where a function calls itself

• It is useful for solving problems that can be broken down into smaller subproblems

• Base case is important to avoid infinite recursion

• Examples: factorial, fibonacci, binary search

NACL is a stateless firewall at the subnet level, while security groups are stateful firewalls at the instance level.

• NACL operates at the subnet level, controlling inbound and outbound traffic based on rules.

• Security groups operate at the instance level, controlling inbound and outbound traffic based on rules.

• NACL is stateless, meaning it does not keep track of the state of connections.

• Security groups are stateful, meaning they keep track of the state of connections.

• NACL rule...read more

Permission set vs profile

• Profiles control overall access to objects, fields, and records for a user

• Permission sets grant additional permissions or access to specific objects or fields

• Profiles are assigned to users at the user level, while permission sets can be assigned to multiple users

Kotlin extension functions allow adding new functions to existing classes without modifying their source code.

• Extension functions are defined outside the class they extend.

• They can be called on the object of the class they extend.

• They can access the properties and functions of the class they extend.

A higher order function is a function that can take other functions as parameters or return functions as results.

• Higher order functions can be used to create more flexible and reusable code.

• They can be used to implement callbacks, event handling, and functional programming concepts.

• Example: map, filter, and reduce functions in JavaScript are higher order functions.

Fragments are modular sections of an activity's user interface, allowing for more flexible and dynamic UI designs.

• Fragments can be reused across multiple activities

• They help in creating responsive UIs for different screen sizes

• Fragments can be added or removed dynamically during runtime

• They are useful for implementing multi-pane layouts on tablets