Solartis Technology Services Java Developer Interview Questions and Answers

Q1. Basic questions regarding Python e.g. magic functions, constructor in python, list, tuple
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Q2. Basic questions regarding FastAPI e.g. what is pydantic, ORM usage, BaseModel etc.
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Q3. Basic questions regarding SQL e.g. No-SQL vs SQL, Indexing,
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They asked react theoretical questions and one javascript coding round was there which was mandatory to clear the intervuew

Q1. Should possess knowledge on OS?
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Q2. Should be willing to work at night from office.
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Q1. What Os have you worked on?
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I have worked on Windows, Linux, and macOS operating systems.
• Windows

• Linux

• macOS
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Q2. What are device drivers?
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Device drivers are software programs that allow the operating system to communicate with hardware devices.
• Device drivers act as a translator between the hardware device and the operating system.

• They provide a standardized way for the operating system to interact with different hardware devices.

• Examples include drivers for printers, graphics cards, network adapters, and USB devices.
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Q1. What is Hoisting?
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Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.
• Variables and functions are hoisted to the top of their scope.

• Only declarations are hoisted, not initializations.

• Function declarations are hoisted before variable declarations.
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Q2. What is currying?
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Currying is a technique in functional programming where a function with multiple arguments is transformed into a sequence of functions, each taking a single argument.
• Currying helps in creating reusable functions and improving code readability.

• It allows partial application of functions, where some arguments are fixed and others are left to be provided later.

• Example: const add = (a) => (b) => a + b; add(2)(3) will return
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Q1. C# basic questions and store procedure questions mostly
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Q2. Trigger ,join related questions
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Q1. AngularJS related questions
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Q1. Previous company discussion
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Q1. 1. What are react hooks
Ans. 
React hooks are functions that allow you to use state and other React features in functional components.
• React hooks were introduced in React 16.8 as a way to write reusable logic in functional components.

• They allow you to use state and other React features without writing a class component.

• Hooks like useState and useEffect are commonly used in React applications.

• useState hook allows you to add state to functional compo...read more
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Q2. 2.What is useMemo() and useCallback()
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useMemo() is a hook in React that memoizes the result of a function, while useCallback() memoizes the function itself.
• useMemo() is used to optimize performance by caching the result of a function and only recomputing it when its dependencies change.

• useCallback() is used to optimize performance by memoizing a function and only creating a new instance when its dependencies change.

• Both hooks are useful when dealing with e...read more
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Q3. 3. How can you manage state globally in react
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State can be managed globally in React using context API or third-party libraries like Redux.
• Context API allows you to create a global state that can be accessed by any component in the React tree.

• Redux is a popular library for managing global state in React applications.

• With Redux, you can define a central store that holds the state and use actions and reducers to update and retrieve the state.

• Other libraries like Mob...read more
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Q1. 1. what are the projects you have worked on till now
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Q2. Salary discussions and joining date discussions
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Coding test in python