LinkedIn Interview Questions, Process, and Tips

Q1. Find the leaves of the tree.
Ans. 
Leaves of a tree are the nodes with no children in a tree data structure.
• Traverse the tree and identify nodes with no children.

• Use depth-first search or breadth-first search algorithms to find leaves.

• Examples: In a binary tree, leaves are nodes with no left or right child.

• In a general tree, leaves are nodes with no children in their child list.
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Q2. Find the LCA of tree.
Ans. 
The Lowest Common Ancestor (LCA) of a tree is the shared ancestor of two nodes farthest from the root.
• Start from the root and traverse the tree to find the paths from the root to the two nodes.

• Compare the paths to find the last common node between them, which is the LCA.

• If one of the nodes is an ancestor of the other, then the ancestor node is the LCA.
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Q1. What projects you worked upon?
Ans. 
I have worked on projects involving web development, mobile app development, and data analysis.
• Developed a web application using React and Node.js for a client in the e-commerce industry

• Created a mobile app using Flutter for a startup in the healthcare sector

• Performed data analysis on customer behavior using Python and SQL for a marketing company
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Q2. What internships you did?
Ans. 
I completed internships at ABC Company and XYZ Company during my undergraduate studies.
• Interned at ABC Company working on web development projects

• Interned at XYZ Company assisting with software testing and quality assurance

• Gained hands-on experience in coding, debugging, and problem-solving
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Q1. Minimum Knight Moves (LC Medium)
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Q2. OS, CN, DB concepts like multithreading, semaphore, tcp vs udp, transaction and ACId properties. Java concepts like stack vs heap(memory), error vs exception. Any 1 Project discussion for 10 mins
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Prepare for a mock success review with the client, during which they will provide you with data for analysis. You will need to analyze this data and offer recommendations to your customers. You have approximately five days to prepare.

Asked Fizbuzz and Char replace in a string

Q1. Basic of Linux OS
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Q2. Network troubleshooting
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Q1. Design a monitoring system
Ans. 
Design a monitoring system for SiteOps
• Identify key metrics to monitor such as server uptime, response time, and error rates

• Implement monitoring tools like Nagios, Zabbix, or Prometheus to track these metrics

• Set up alerts for critical thresholds to notify the team in case of issues

• Create dashboards to visualize the data and trends for easy monitoring

• Regularly review and update the monitoring system to ensure it remains
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Q2. Examples of automation
Ans. 
Automation in SiteOps involves using tools and scripts to streamline processes and reduce manual tasks.
• Automated deployment scripts for deploying code changes to servers

• Monitoring tools that automatically alert when server resources are low

• Automated backup processes for data protection

• Scheduled tasks for routine maintenance like database cleanup
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