Keykhabor Media Interview Questions and Answers

Q1. HTML5 CSS3 Basics and Advanced
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Q2. Javascript Basics and Advanced
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Q1. What is an LVM
Ans. 
LVM stands for Logical Volume Manager, a tool used in Linux systems to manage disk space by creating logical volumes from physical volumes.
• LVM allows for dynamic resizing of logical volumes without needing to unmount the filesystem

• It provides features like striping, mirroring, and snapshots for data management

• Common LVM commands include pvcreate, vgcreate, lvcreate, lvextend, lvreduce

• Example: Creating a new logical vol...read more
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Q2. How to check the open ports
Ans. 
To check open ports, use tools like netstat, nmap, or telnet
• Use netstat command to display all open ports on a system

• Use nmap tool to scan for open ports on a remote system

• Use telnet command to check if a specific port is open on a remote host
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Q1. What is a file storage and block storage
Ans. 
File storage stores data in files and folders, while block storage stores data in blocks or chunks.
• File storage organizes data in a hierarchical structure of files and folders, similar to a traditional file system.

• Block storage breaks data into blocks or chunks and stores them in a raw format without any file system structure.

• File storage is commonly used for storing documents, images, videos, etc., while block storage...read more
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Q2. How do you troubleshoot a server
Ans. 
To troubleshoot a server, start by checking for hardware issues, then move on to software problems and network connectivity.
• Check hardware components such as power supply, CPU, RAM, and storage devices for any issues or failures.

• Review system logs and error messages to identify any software-related issues or conflicts.

• Verify network connectivity by checking cables, switches, routers, and firewall settings.

• Use diagnosti...read more
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1. How to make an api call in java and count the number of items in the response?
2. Longest Incresing subsequence (leetcode)

with some MCQs in Java and microservices

Q1. What is java8. its features and uses
Ans. 
Java 8 is a major release of the Java programming language with new features like lambda expressions, streams, and default methods.
• Lambda expressions allow functional programming in Java.

• Streams provide a new way to work with collections in a more concise and efficient manner.

• Default methods allow interfaces to have method implementations.

• Java 8 also introduced the new Date and Time API for better handling of date and ...read more
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Q2. Use of microsevices in java. and its implmenatation
Ans. 
Microservices in Java are a way to design software applications as a collection of small, loosely coupled services.
• Microservices architecture breaks down a large application into smaller, independent services that can be developed, deployed, and scaled independently.

• Each microservice typically focuses on a specific business function and communicates with other services through APIs.

• Java is a popular language for implem...read more
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Q3. Design patterns in java.
Ans. 
Design patterns in Java are reusable solutions to common problems in software design.
• Design patterns help in creating maintainable and scalable code.

• Examples include Singleton, Factory, Observer, Strategy, and Decorator patterns.

• Each design pattern has its own purpose and implementation details.

• Design patterns promote code reusability and flexibility in software development.
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Q4. Find the height of binary tree using recursion?
Ans. 
Recursively find the height of a binary tree by comparing the heights of left and right subtrees.
• Start by checking if the root is null, return -1 if so.

• Recursively find the height of the left subtree and right subtree.

• Return the maximum of the heights of the left and right subtrees, plus 1 for the current node.
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Q1. Discussion about carrer summery. what is your roles and responsibilities in projects done by you. challanges faced in the developmenet area. how to identifty problems in code.
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Q2. Find the longest substring in string without repeating characters
Ans. 
Find the longest substring in a string without repeating characters.
• Use a sliding window approach to iterate through the string.

• Keep track of the characters seen so far in a set.

• Update the start of the window when a repeating character is encountered.

• Calculate the length of the current substring and update the longest substring found.

• Repeat until the end of the string is reached.
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Q1. About motors and transformer
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Q2. Dol and star delta starters
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Q3. Motor troubleshooting
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Writing and speaking test(Versant test). Duration was for 1 hour.

Q1. Background details
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Q2. Career goals and objectives
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Q3. Why I chose the work?
Ans. 
I chose this work because of my passion for data analysis and problem-solving.
• Passion for data analysis and problem-solving

• Interest in working with data to derive insights

• Enjoyment of analyzing trends and patterns

• Desire to make data-driven decisions

• Excitement for the challenges and opportunities in the field
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Q4. Understanding of the role
Ans. 
The TAAG Analyst role involves analyzing data to provide insights and recommendations for improving business performance.
• Analyze data to identify trends and patterns

• Create reports and presentations to communicate findings

• Collaborate with team members to develop strategies based on data analysis
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Q5. Strengths and weakness
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Q1. The schedule and timings of work.
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Q2. The expectation in terms of salary.
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I am looking for a competitive salary that reflects my skills and experience.
• I am open to discussing salary based on the responsibilities and expectations of the role.

• I have researched industry standards and salary ranges for similar positions.

• I am looking for a fair and competitive compensation package that includes benefits and opportunities for growth.

• I am confident in my abilities and believe that my contributions ...read more
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Q3. The time of availability to join if selected.
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Q1. Jejendnd. Iris di rinslslch
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Q2. Neil r you for f
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Q1. Find 3rd transaction of user from uber cab dataset
Ans. 
To find the 3rd transaction of a user from the Uber cab dataset.
• Identify the user's transactions in the dataset

• Sort the transactions by date/time

• Select the 3rd transaction of the user
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Q2. Find last quarter ordered product from logistics dataset
Ans. 
To find the last quarter ordered product from logistics dataset.
• Identify the date range for the last quarter

• Filter the dataset for orders within that date range

• Identify the product ordered in the last quarter
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Q1. Tell me about yourself
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Q1. Explain how power bi works
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Q1. Merge 2 sorted Arrays
Ans. 
Merging two sorted arrays into a single sorted array
• Create a new array to store the merged result

• Use two pointers to iterate through both arrays and compare elements

• Add the smaller element to the new array and move the pointer for that array
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Q2. Write polyfill for getElementById
Ans. 
Polyfill for getElementById function in JavaScript
• Create a function named getElementById

• Check if the function already exists, if not, create it

• Use document.querySelector to select the element by ID

• Return the selected element
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Q3. What are the new features in React 18 ? Optimisation techinques in React ? Concurrency in React ?
Ans. 
React 18 introduces new features like automatic batching, start transition, and streaming server renderer. It also focuses on performance optimizations and concurrent rendering.
• New features in React 18 include automatic batching, start transition, and streaming server renderer.

• Optimization techniques in React 18 involve concurrent rendering, improved scheduling, and reduced re-renders.

• Concurrency in React 18 allows for...read more
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Q1. HLD round to develop Autocomplete feature End to End with API contracts and architecture.
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Q2. Remove duplicate characters from a sentence
Ans. 
Remove duplicate characters from a sentence
• Create an empty array to store unique characters

• Iterate through each character in the sentence

• Check if the character is already in the array, if not add it
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