Gamemano Full Stack Software Developer Interview Questions and Answers

Aptitude test basic on java

Q1. Java aptitude questions
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Q2. Web technologies
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Q1. What is closures in JS ?
Ans. 
Closures in JavaScript are functions that have access to variables from their outer scope, even after the outer function has finished executing.
• Closures are created when a function is defined inside another function.

• The inner function has access to the outer function's variables, parameters, and even the outer function's return value.

• Closures are useful for creating private variables and data encapsulation.

• They can be ...read more
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Q2. Diff props and state ?
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Props and state are both used in React to manage and pass data, but they have different purposes and behaviors.
• Props are read-only and passed from parent components to child components.

• State is mutable and managed within a component.

• Props are used to pass data from a parent component to a child component.

• State is used to manage and update data within a component.

• Props are passed as attributes to a component in JSX.

• Stat...read more
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Q3. How to optimise the performance ?
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Performance optimization involves identifying and resolving bottlenecks to improve the efficiency of software.
• Identify and analyze performance bottlenecks

• Optimize algorithms and data structures

• Improve database performance through indexing and query optimization

• Use caching techniques to reduce database and network calls

• Minimize network latency by optimizing network requests

• Optimize front-end code by reducing DOM manipul...read more
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Q4. Diff between class based or function based component ?
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Class-based components are ES6 classes that extend React.Component, while function-based components are functions that return JSX.
• Class-based components are more feature-rich and have access to lifecycle methods.

• Function-based components are simpler and easier to read and test.

• Class-based components can have state and use lifecycle methods like componentDidMount and componentDidUpdate.

• Function-based components can use ...read more
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Q5. What is es6 features ?
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ES6 (ECMAScript 2015) introduced several new features to JavaScript, enhancing its functionality and making it more efficient.
• Arrow functions: concise syntax for writing functions

• Let and const: block-scoped variables

• Template literals: easier string interpolation

• Destructuring assignment: extracting values from arrays or objects

• Spread syntax: expanding elements in arrays or objects

• Classes: syntactical sugar for creating ...read more
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Because it's so easy And because of that I have prepared for it

Because it's so easy and become of that I have prepared for it

Q1. Because it's so easy and become of that I have prepared for it
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Q2. Your self.how to prepare on this exam
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Q3. What are your strengths? How do you think they will be an advantage for this position?
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Q4. Do you have good time management skills? Tell me how you use them on a typical day.
Ans. 
Yes, I have good time management skills.
• I prioritize my tasks based on their urgency and importance.

• I use a to-do list to keep track of my tasks and deadlines.

• I break down larger tasks into smaller, manageable chunks.

• I try to minimize distractions and stay focused on the task at hand.

• I regularly review my progress and adjust my schedule as needed.
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Q5. Do you have any hobbies? What are the things you enjoy doing the most?
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Q6. What do you consider to be a good work ethic?
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Q7. Would you call yourself a team player?
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Q1. Always remember to flow- up
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It will good and easy for me to attend it

Questions in collection,java 8 concepts.

Q1. Diff. Between promise and observable
Ans. 
Promise is a one-time event while Observable can emit multiple values over time.
• Promise is used for asynchronous operations that will return a single value or an error.

• Observable is used for asynchronous operations that can return multiple values over time.

• Promise can be in one of three states: pending, fulfilled, or rejected.

• Observable can emit values, errors, and completion events.

• Promise can be converted to an Obser...read more
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Q2. Lifecycle hooks in angular
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Angular lifecycle hooks are methods that get called at specific stages of a component's lifecycle.
• ngOnInit() - called after the component is initialized

• ngOnChanges() - called when the component's input properties change

• ngOnDestroy() - called just before the component is destroyed

• ngAfterViewInit() - called after the component's view has been initialized

• ngAfterContentInit() - called after the component's content has been
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Q3. Jwt security implementation in angular
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Jwt security implementation in Angular
• Install angular-jwt package

• Create an auth service to handle token storage and retrieval

• Add an HttpInterceptor to attach the token to outgoing requests

• Use guards to protect routes based on authentication status
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