Yahoo Technical Lead Interview Questions and Answers

C#, .net, OOP and Design patterns

Case study - Current external affairs, life after covid

Q1. What type of need to required expertise to Google.
Ans. As per knowledge to check electronic devices which is used for data storage in the Google cloud and other platforms.
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Q2. Why we are hiring the person for Google.
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Q1. Which type of questions asked by the Google.?
Ans. First of all can we know what is the technical field working in Google plateform.
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Why are you here and why amazon

60 mins logic based round here

Normal aptitude questions, Refer R S Agarwal

Q1. Selenium architecture
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Q2. X path locators and diffrent types.
Ans. 
Xpath locators are used to locate elements on a web page. There are different types of Xpath locators.
• Absolute Xpath starts with the root node and goes all the way to the element

• Relative Xpath starts from the current node and goes to the element

• Attribute-based Xpath locates elements based on their attributes

• Index-based Xpath locates elements based on their position in the DOM

• Text-based Xpath locates elements based on t
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Q1. Tell me about yourself?
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Coding puzzle on hacker rank

Q1. Explain redux toolkit
Ans. 
Redux Toolkit is an official, opinionated, batteries-included toolset for efficient Redux development.
• Includes utilities like createSlice, createAsyncThunk, and createEntityAdapter for easier Redux setup

• Reduces boilerplate code and simplifies common Redux patterns

• Encourages best practices and helps developers write more maintainable code
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Q2. Explain use memo hook
Ans. 
memo hook is a React hook used for optimizing performance by memoizing the result of a function
• Memo hook is used to prevent unnecessary re-renders by caching the result of a function

• It is useful when a component re-renders frequently with the same props

• Example: const memoizedValue = useMemo(() => computeExpensiveValue(a, b), [a, b])
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