Orbcomm Interview Questions and Answers

Q1. Types of data structure and their time complexities
Ans. 
Data structures are used to organize and store data efficiently. Time complexity is the measure of efficiency.
• Arrays - O(1) for access, O(n) for search and insertion

• Linked Lists - O(n) for access, O(1) for insertion and deletion

• Stacks - O(1) for access, insertion and deletion

• Queues - O(1) for access, insertion and deletion

• Trees - O(log n) for access, insertion and deletion

• Hash Tables - O(1) for access, insertion and de
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Q2. Types of Binary Tree
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Binary trees are classified based on the number of children each node can have.
• Full binary tree: every node has either 0 or 2 children

• Complete binary tree: all levels except possibly the last are completely filled, and all nodes are as far left as possible

• Perfect binary tree: all internal nodes have two children and all leaf nodes are at the same level

• Balanced binary tree: the difference in height between the left and ...read more
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Just focus and data structures and algorithms

Q1. What are your weaknesses
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Q1. Based on DSA, OOPS
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Q1. Based on Projects in Resume
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Q1. Technical Discussion about earlier projects
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Q1. Salary Discussion
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Scheduling Program, Build Scripts

Q1. System Design, Previous Projects
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Q1. Salary Decision, Car lease options
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Q1. Give me an example where you solved a problem and the steps you followed
Ans. 
I solved a customer complaint by identifying the root cause and providing a solution
• Listened to the customer's complaint and empathized with their situation

• Analyzed the issue and identified the root cause

• Developed a solution and presented it to the customer

• Followed up with the customer to ensure their satisfaction
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It was like 5 MCQ and two coding questions with difficult level of moderate

Q1. They asked questions from DSA,sql and some web technology which I mentioned in my resume
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Q2. What is the life cycle of react components?
Ans. 
React components go through various stages in their life cycle, from initialization to destruction.
• Initialization: Component is created and initialized with default props and state.

• Mounting: Component is rendered on the DOM for the first time.

• Updating: Component re-renders when props or state change.

• Unmounting: Component is removed from the DOM.

• Examples: componentDidMount() for mounting, componentDidUpdate() for updati
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Q1. Asked about my project and some behavioural questions
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Moderate level questions

Q1. OOPS,DBMS,SQL queries,Web Development essentials,GitHub
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Q1. Questions about your interests
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Q1. Questions like what is your dream company,will you re-locate,..etc
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