FarEye Software Developer Interview Questions, Process, and Tips

Q1. Architecture of current project
Ans. 
The current project follows a microservices architecture with Docker containers for scalability and flexibility.
• Microservices architecture is used to break down the application into smaller, independent services that can be developed, deployed, and scaled independently.

• Docker containers are utilized for packaging the application and its dependencies into a standardized unit for easy deployment and management.

• Service di...read more
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Q2. Spring and Hibernate questions
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Basic coding questions

Q1. Jump Game - II
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Q2. Number of Island
Ans. 
Count the number of islands in a given grid of '1's and '0's.
• Iterate through the grid and for each '1' encountered, perform a depth-first search to mark all connected '1's as visited.

• Increment the island count for each new island encountered.

• Consider edge cases like grid boundaries and handling visited cells.
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Q1. Trapping rain drops
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Q2. Next highest number
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To find the next highest number, sort the numbers in ascending order and find the number immediately greater than the given number.
• Sort the numbers in ascending order

• Find the number immediately greater than the given number

• Return the next highest number
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Q1. Projects discussion
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Q2. Lld design question
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Q1. Tree question dsa
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Q2. Fibonacci sequence question
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Q1. Angular18 updates`
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Q2. Angular Ivy features
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Q3. Dif between var, let, const
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var is function scoped, let is block scoped, const is block scoped and cannot be reassigned.
• var is function scoped, let is block scoped, const is block scoped and cannot be reassigned

• var can be redeclared and updated, let can be updated but not redeclared, const cannot be redeclared or updated

• Example: var x = 10; let y = 20; const z = 30;
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Q4. What is Closure
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Closure is a function that captures the variables from its surrounding scope, even after the surrounding function has finished executing.
• Closure allows a function to access and manipulate variables from its outer scope.

• It maintains a reference to its outer scope, even after the outer function has returned.

• Closure is commonly used in event handlers and callbacks.
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Q5. Dependency injection
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Q6. Rxjs operators used
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Rxjs operators are used for handling asynchronous operations in reactive programming.
• Map operator: transforms the items emitted by an Observable

• Filter operator: emits only those items from an Observable that pass a specified condition

• Merge operator: combines multiple Observables into one by merging their emissions

• SwitchMap operator: switches to a new Observable each time it is emitted

• DebounceTime operator: emits a valu...read more
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Q7. Change detection strategy in Angular
Ans. 
Change detection strategy in Angular is a mechanism used to detect changes in the application state and update the view accordingly.
• Angular uses Zone.js for change detection by default

• Change detection can be triggered manually using ChangeDetectorRef

• Optimizing change detection using OnPush strategy
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Q1. Nodejs life cycle
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Q2. Promise in nodejs
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Promise in Node.js is an object representing the eventual completion or failure of an asynchronous operation.
• Used to handle asynchronous operations in a more readable and manageable way

• Can be in one of three states: pending, fulfilled, or rejected

• Can be chained together to handle multiple asynchronous operations sequentially

• Example: fetching data from a database using a promise-based API
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