Exicom Senior Manager Interview Questions and Answers

Q1. C questions on oops concepts
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Q2. Python and ml questions
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Q1. Salary discussion
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Q1. Add two linked list
Ans. 
To add two linked lists, iterate through both lists simultaneously and add corresponding nodes, considering carry from previous addition.
• Create a dummy node to hold the result.

• Initialize current node to dummy node.

• Iterate through both lists, adding values and carry from previous addition.

• Move to next nodes in both lists.

• Handle cases where one list is longer than the other.

• Handle final carry if present.
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Q2. Find shortest path in graph
Ans. 
Use Dijkstra's algorithm to find the shortest path in a graph
• Implement Dijkstra's algorithm to find the shortest path between two nodes in a graph

• Maintain a priority queue to keep track of the shortest distance to each node

• Update the shortest distance to each node as you traverse the graph

• Track the path by storing the previous node for each node visited
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Q1. Check tree is BST
Ans. 
Check if a binary tree is a Binary Search Tree (BST)
• Perform an in-order traversal of the tree and check if the resulting array is sorted

• Keep track of the previous node value during traversal to compare with the current node value

• Ensure that each node's value is greater than the previous node's value in the in-order traversal
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Q2. Check substring palindrome or not
Ans. 
Check if a substring in an array of strings is a palindrome or not.
• Iterate through each string in the array

• For each string, check if any of its substrings are palindromes

• Return true if a palindrome substring is found, false otherwise
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Q1. What were your previous projects that you have worked on
Ans. 
I have worked on projects related to developing software for autonomous vehicles and implementing machine learning algorithms for predictive maintenance.
• Developed software for autonomous vehicles to improve navigation and obstacle avoidance

• Implemented machine learning algorithms for predictive maintenance in manufacturing plants

• Collaborated with cross-functional teams to integrate new technologies into existing systems
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Q2. What all your technical skills and stacks that you have previously used for your projects
Ans. 
I have experience with Java, Python, SQL, AWS, Docker, and Kubernetes in my previous projects.
• Java

• Python

• SQL

• AWS

• Docker

• Kubernetes
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Q1. What is docker and why do we use it for containerising applications
Ans. 
Docker is a platform for developing, shipping, and running applications in containers.
• Docker allows applications to be isolated in containers, making them portable and easy to deploy across different environments.

• Containers share the host OS kernel but run as isolated processes, providing lightweight and efficient virtualization.

• Docker simplifies the process of packaging applications and their dependencies, ensuring co...read more
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Q2. What is database normalisation and how your project benefited from it in the past
Ans. 
Database normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Database normalization involves breaking down data into smaller, more manageable tables and defining relationships between them.

• It helps in reducing data redundancy, improving data integrity, and making the database more efficient.

• For example, in a project I worked on, we normalized the database by spl...read more
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Q1. What has been your experience with challenging projects
Ans. 
I have extensive experience working on challenging projects in various industries.
• Led a team in developing a complex software solution for a major client

• Managed a project with tight deadlines and limited resources

• Implemented innovative solutions to overcome technical obstacles

• Collaborated with cross-functional teams to deliver successful outcomes
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Q2. How would you approach learning about new domain and technologies with a different background
Ans. 
I would approach learning about new domain and technologies with a different background by leveraging my existing skills, seeking out resources, and collaborating with experts in the field.
• Identify key concepts and terminology in the new domain

• Seek out online courses, tutorials, and books to gain foundational knowledge

• Collaborate with colleagues or mentors who have experience in the new domain

• Experiment with hands-on p...read more
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Q1. Which energy helps to move piston from TDC to BDC after expansion
Ans. 
The energy that helps to move the piston from TDC to BDC after expansion is mechanical energy.
• Mechanical energy is converted from the expansion of gases in the combustion chamber.

• This energy is transferred to the piston through the connecting rod.

• The movement of the piston from Top Dead Center (TDC) to Bottom Dead Center (BDC) is crucial for the operation of the engine.
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Q2. Elaborate Combustion process of IC engine
Ans. 
Combustion process in an internal combustion engine involves the ignition of fuel-air mixture to generate power.
• Fuel and air mixture is compressed in the cylinder

• Spark plug ignites the mixture, causing combustion

• Combustion generates high pressure, pushing the piston down

• Exhaust gases are expelled through the exhaust valve

• Examples: Petrol engine, Diesel engine
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Q1. Tell something about yourself
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Q1. Questions about memory segments and compiler optimisations
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Q2. Question about controller architecture
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Q1. Question about memory allocation of variables from a code snippet
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Duration: 1Hour 30 Minutes, 2 Coding Questions of Total 175 Marks. 1st Question has 75 marks and 2nd Question has 100 marks.

Q1. 1. Find the smallestMissingNumber in given array using Bitwise OR operation alone 2. Based on Array data Manipulation.
Ans. 
Using Bitwise OR operation to find the smallest missing number in an array.
• Iterate through the array and perform Bitwise OR operation with each element to set corresponding bit in a bitmask

• Iterate through the bitmask to find the first unset bit, which represents the smallest missing number

• Example: Array [0, 1, 3, 4, 6] would have a bitmask of 10101, smallest missing number is 2
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Q2. Q2: Customized Data Extraction From Given Dynamic Array & Perform Some Math Operations On the Extracted Data
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Q1. Write a Pseudo code for given scenario?
Ans. 
Pseudo code for a scenario
• Define variables and data structures needed

• Write the main logic using conditional statements and loops

• Handle edge cases and error conditions

• Test the pseudo code with sample inputs
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Q1. System Design & Design Pattern based questions
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Q1. Not Applicable (Yet to be scheduled)
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Q1. Java oops, spring boot, Microservices
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Q1. One java coding questions, database and application design questions, docker, etc
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Q1. Structural questions, experience based, project based
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Q1. Experience based and general discussion
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Major questions were around problem solving, strings