Ascella Infosec Software Engineer Intern Interview Questions and Answers

Q1. What are React Queries?
Ans. 
React Queries are a library for managing server state in React applications.
• React Queries provide a way to fetch and cache data from an API in React components.

• They offer features like caching, background fetching, and automatic refetching.

• React Queries can handle complex data fetching requirements, such as pagination and infinite scrolling.
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Q2. Can useEffect() hook run twice?
Ans. 
Yes, useEffect() hook can run twice under certain conditions.
• useEffect() hook can run twice if the dependencies array changes between renders.

• This can happen if the dependencies array contains values that change frequently.

• For example, if a state variable is included in the dependencies array and it is updated in the component, useEffect() will run again.
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Q1. Problems related to Binary Search
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Q2. Problem statement on BST
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Q1. Minimum element in an array
Ans. 
Find the minimum element in an array of strings
• Iterate through the array and compare each element to find the minimum

• Use built-in functions like Math.min() or sort() to find the minimum

• Handle edge cases like empty array or array with only one element
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Q2. Reverse a linked list
Ans. 
Reverse a linked list by changing the next pointers of each node
• Iterate through the linked list and change the next pointers to reverse the list

• Use three pointers - prev, current, and next to keep track of nodes

• Example: 1 -> 2 -> 3 -> 4 -> null, after reversing: 4 -> 3 -> 2 -> 1 -> null
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Q1. Basic questions of angular and javascript.
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Q2. Es6 feature , typescript features
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Q3. Promise, observable, focus on syntax of every thing like interceptor, routing, gaurd and all .
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Q1. Behaviour subject, subject, life cycle hooks
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Q2. This round was not very easy in my case.
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Q3. Be prepared for array and object of array questions. Like sorting, searching, filtering , any logic .
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Q1. Basic HR questions and managerial round. Not being hard . But learn about your project and past organisation
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DSA, SUM Practice, DSA SUM

DSA Sum Practice DSA Sum

Coding Test was on Coderbyte. Consisted 4 questions. 1 coding and 3 of web developement.

Q1. General HR questions.
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Q1. General Techinal questions
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Simple coding and scripting round

This round was in front of a panelist you have to code a basic application

Q1. This was system design round where db schema and application outline and logic to build it were asked
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Q1. Here behavioural question were asked by the product owner
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Q1. This is also a coding round where you have to code a small application related to the tech you have exp in
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Q1. 2 sum problem on number
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Q1. Json data manipulation
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Q1. Normal hr question
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