Jio System Administrator Interview Questions and Answers

Simple aptitude test

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General aptitude questions on Cocubes Platform of 60 minutes

Q1. DSA question on strings and linked list
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Q2. Projects and Resume Discussion
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Q3. Puzzle (Two bulbs)
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Q4. OOP concepts - pillars of OOP
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The pillars of OOP are encapsulation, inheritance, and polymorphism.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allowing a new class to inherit properties and behavior from an existing class.

• Polymorphism: The ability for objects of different classes to respond to the same message in different ways.
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Q1. Techno-Managerial Round (Discussion on Projects and Resume)
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Q2. Details of previous internships and about the offered role
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Q1. General HR questions about introduction and compensation discussion
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Q1. Coin change problem and loop in linked list
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Coin change problem involves finding the minimum number of coins required to make a given amount of change. Loop in linked list is a traversal technique.
• Coin change problem can be solved using dynamic programming approach

• Loop in linked list can be implemented using a while loop or a for loop

• Coin change problem can be extended to include finding the actual coins used to make the change

• Loop in linked list can be used to ...read more
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Q1. Valid parenthesis and min stack problem
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Valid parenthesis and min stack problem
• Valid Parenthesis problem involves checking if a given string of parentheses is valid or not

• Min Stack problem involves designing a stack that supports push, pop, top, and retrieving the minimum element in constant time

• Both problems can be solved using stack data structure

• Valid Parenthesis problem can be solved by pushing opening brackets onto the stack and popping them when a clos...read more
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Q1. Show your confidence about tech skills.
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Q1. Salary discussion and Normal HR questions
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Q1. Pcap analysis and log analysis
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Q2. Feature testing
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Q1. Kubernetes and docker
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Q2. Amazon web service
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Q1. 100k feet over view
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A high-level overview of a topic or project, typically focusing on key points and goals.
• Summarize the main objectives and goals of the project

• Highlight key milestones and deliverables

• Provide a brief overview of the team structure and roles

• Discuss any potential challenges or risks

• Outline the overall impact and benefits of the project
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Q2. Technical overview of all technology
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Q1. Difference between concepts
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Difference between concepts refers to the distinctions or contrasts between two or more ideas, theories, or principles.
• Concepts are abstract ideas or mental representations, while differences are variations or distinctions between them.

• Understanding the difference between concepts helps clarify their meanings and applications.

• For example, the difference between velocity and speed in physics is that velocity includes di
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Q2. Basic understanding of concepts and technology
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Q1. Salary expectation
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Q2. Why you want to jump
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Q1. PlSql based in depth
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Q1. Plsql development based indepth
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Q1. Technical knowledge based
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Q1. Indepth bgv based questions
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Basi aptitude and coding mcq

Q1. What is hashmap
Ans. 
HashMap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• HashMap is part of the Java Collections framework.

• It uses hashing to store and retrieve elements efficiently.

• Keys in a HashMap must be unique, but values can be duplicated.

• Example: HashMap<String, Integer> map = new HashMap<>();
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Q1. Sort linkedlist
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Sort a linked list
• Use merge sort or quick sort for efficient sorting

• Implement a sorting algorithm that works well with linked lists

• Consider the time and space complexity of the sorting algorithm
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