iServeU Devops Engineer Interview Questions and Answers

Q1. All aspects of Devops and on your resume
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Q2. Kubernetes , Docker , Jenkins and AWS
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Q1. More technical depth questions
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Q1. More of a managerial type of question
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Q1. Salary discussion
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Pattern programming, javascriptt based questions

Q1. Browser specific questions
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Q1. Basic for Core java
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Q2. Basics of selenium
Ans. 
Selenium is a powerful tool for automating web applications for testing purposes, supporting multiple browsers and programming languages.
• Selenium supports multiple programming languages like Java, Python, C#, and Ruby.

• It can automate browsers like Chrome, Firefox, and Safari.

• Selenium WebDriver is the core component that interacts with the browser.

• Example: Using WebDriver in Python to open a webpage: 'from selenium impo...read more
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Q1. More on framework side
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Q2. Few question on Manual testing
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Q1. Intro about yourself
Ans. 
I am a Senior Engineer with 10+ years of experience in software development, specializing in backend systems and cloud technologies.
• 10+ years of experience in software development

• Specialize in backend systems and cloud technologies

• Strong problem-solving skills

• Experience with large-scale systems

• Proficient in programming languages like Java, Python, and SQL
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Q2. Discussion on Job role
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Q1. Introduce about yourself
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Q2. About my qualification
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Round duration - 90 mins
Round difficulty - Hard

There were questions related to DP and DFS.

 

Q1. 
Trapping Rain Water Problem Statement
You are given a long type array/list ARR of size N, representing an elevation map. The value ARR[i] denotes the elevation of the ith bar. Your task is to determine th...read more
Ans. 
Calculate the total amount of rainwater that can be trapped between given elevations in an array.
• Iterate through the array and calculate the maximum height on the left and right of each bar.

• Calculate the amount of water that can be trapped at each bar by taking the minimum of the maximum heights on the left and right.

• Sum up the trapped water at each bar to get the total trapped water for the entire array.
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Round duration - 60 mins
Round difficulty - Medium

At first, I was asked about the different projects that I have done so far. We had a detailed discussion on the same.
He also checked my OOP concepts

Q1. Can you describe the process of designing an LRU Cache from scratch during your System Design Round?
Ans. 
Designing an LRU Cache involves implementing a data structure that stores a fixed number of items and removes the least recently used item when full.
• Start by defining the data structure for the cache, typically using a combination of a hashmap and a doubly linked list.

• Implement methods for getting and setting key-value pairs in the cache.

• When a new item is added to the cache, check if it exceeds the maximum capacity. I...read more
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Q2. 
Reverse Linked List Problem Statement
Given a Singly Linked List of integers, your task is to reverse the Linked List by altering the links between the nodes.
Input:
The first line of input is an intege...read more
Ans. 
Reverse a singly linked list by altering the links between nodes.
• Iterate through the linked list and reverse the links between nodes

• Use three pointers to keep track of the current, previous, and next nodes

• Update the links between nodes to reverse the list

• Return the head of the reversed linked list
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Q3. 
Middle of a Linked List
You are given the head node of a singly linked list. Your task is to return a pointer pointing to the middle of the linked list.
If there is an odd number of elements, return the ...read more
Ans. 
Return the middle element of a singly linked list, or the one farther from the head if there are even elements.
• Traverse the linked list with two pointers, one moving twice as fast as the other

• When the fast pointer reaches the end, the slow pointer will be at the middle

• If there are even elements, return the one that is farther from the head node

• Handle edge cases like linked list of size 1 or empty list
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Round duration - 60 mins
Round difficulty - Medium

It is HR + Technical round
asked about the Behavioural questions and how you justify yourself in an argument .questions related to current technology.
They gave me feedback on how well I had performed so far and gave me suggestions on what more can I do to further improve myself.

Q1. Basic of spring boot, Database, annotations, core Java, and some basic DSA problems
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Q2. Study basics of spring boot, spring hibernate, database - relational and others. And problems basic string and array questions
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Q1. Description about yourself
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Q2. Told about my self and some technical questions
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Time ,speed ,distance

Java application using oops concept

Q1. Inheritance , oops
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Q1. Tell me about urself
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