ION Group Technical Consultant Interview Questions and Answers

Number of islands in a matrix

Design data recovery system

Q1. Our project contains interview question related to JAVA.
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Q1. Questions were mostly around system design, you will be given a case like a stock system and specific use case is asked to design end to end from UI to backend.
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Q2. Some of the system debugging/performance improvement questions are asked from both UI and backend.
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Q1. Java spring boot questions
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Q1. System design interview question
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Q1. Scenario based questions
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Q1. Basic of Oops and Garbage collection
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Q1. Code Review in c# and also with some network regarding questions
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Q1. Experience on the tools and process
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Q1. Experience on Jenkins terraform
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Scenario-based questions on cloud technologies and Kubernetes.

Q1. Regular behaviour questions
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Q1. Implement minstack
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Q2. How load balancers work
Ans. 
Load balancers distribute incoming network traffic across multiple servers to ensure no single server is overwhelmed.
• Load balancers monitor the health of servers and distribute traffic based on predefined algorithms.

• They can be hardware-based or software-based.

• Common algorithms used by load balancers include round-robin, least connections, and IP hash.

• Load balancers can improve reliability and scalability of a website ...read more
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Q1. 2 sum problem to implement in O(n)
Ans. 
The Two Sum problem involves finding two numbers in an array that add up to a target value.
• Iterate through the array and store the difference between the target and current element in a hashmap.

• Check if the current element exists in the hashmap, if yes, return the indices of the current element and the stored difference.

• Time complexity of O(n) can be achieved by using a hashmap to store elements and their indices.
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Q2. About the projects i have done
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