ACT Fibernet Software Engineer Interview Questions and Answers

Basi aptitude and coding mcq

Q1. What is hashmap
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Q1. JavaScript prototype sorting function
Ans. 
JavaScript prototype sorting function for arrays of strings
• Use the Array.prototype.sort() method to sort an array of strings

• Pass a compare function to specify the sorting order

• Example: ['banana', 'apple', 'cherry'].sort((a, b) => a.localeCompare(b))
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Q2. Promise polyfill from scratch
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Creating a Promise polyfill from scratch involves implementing the Promise API using callbacks and handling asynchronous operations.
• Understand the Promise API and its methods (resolve, reject, then, catch)

• Implement a constructor function that takes an executor function as an argument

• Handle asynchronous operations using callbacks and setTimeout

• Implement the then and catch methods to handle success and error cases respec
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Q3. React hooks -useEffect useMemo
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Q1. Session Management in applications
Ans. 
Session management is the process of securely managing user sessions in web applications.
• Use cookies or tokens to track user sessions

• Implement session timeout to prevent unauthorized access

• Store session data securely on the server side

• Use HTTPS to encrypt session data during transmission
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Q2. Why react is fast than other frameworks
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React is faster than other frameworks due to its virtual DOM, efficient diffing algorithm, and use of server-side rendering.
• React uses a virtual DOM which allows it to update only the necessary components instead of re-rendering the entire page.

• React's efficient diffing algorithm compares the virtual DOM with the actual DOM to minimize updates and improve performance.

• React supports server-side rendering, which can impr...read more
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Q1. Tell me about your past experience?
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Q1. Core Java concepts, oops fundamental, cloud, stream api, java 8 features, hashmap how it works, equals override contract
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Q1. Java 8, multi threading, why lazy evaluation in stream api, internal working of hash map, overloading, overriding
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Q1. Java basics prepare well
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Q1. Mostly Scenario based
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Q2. 1 coding quest, then Detail discussion on each and every topic
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Questions were asked

Dsa dp, graphs and many more questions from arrays and linked list were asked

MCQ(objective ) question... computer based exam about computer skills

They will give one concept and conduct debate candidates will speak argue advantage and disadvantage about that concept

Q1. Face to face technical round. They will ask what's html and what's python advantages of python ect....
Ans. Hyper text markup language, it will used for creating website and designing website
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Q1. Finally Hr round...face to face interview
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Q2. Why we would hiring u
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Q3. Why are you selecting this job
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Q4. What you expect about your salary
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Basic aptitude and coding questions for grads