Supreme Nonwoven Industries Junior Engineer Interview Questions and Answers

There were 2 DSA questions that we had to solve on HackerRank. One of them was a medium dynamic programming question - minimum insertions required to make a string palindrome. The other was a fairly easy question that required knowledge of permutations and combinations. We just had to figure out a maths formula given the situation.
1st round also involved a logical game that we had to play. We were scored based on coding + game and shortlisted for next round.

An interviewer joined me on zoom meet and sent a HackerRank link to a question. It was a medium dynamic programming/backtracking question. I solved it but only half the test cases ran while others threw TLE as my recursive code took exponential time.

Q1. Explain what happens after you search a url on your browser. (Had to explain the whole DNS working)
Ans. 
Searching a URL triggers a series of steps involving DNS resolution, server communication, and content rendering in the browser.
• 1. User enters a URL in the browser's address bar.

• 2. The browser checks its cache for the IP address associated with the URL.

• 3. If not found, the browser queries a DNS resolver to resolve the domain name.

• 4. The DNS resolver checks its cache; if not found, it queries root DNS servers.

• 5. The roo...read more
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Q2. Explain how video calling works. (Had to explain the whole OSI model)
Ans. 
Video calling transmits audio and video data over the internet using the OSI model for communication.
• Application Layer: Video calling apps like Zoom or Skype provide user interfaces for communication.

• Presentation Layer: Data is encoded and compressed (e.g., H.264 for video, AAC for audio) for efficient transmission.

• Session Layer: Establishes, maintains, and terminates connections (e.g., signaling protocols like SIP).

• Tr...read more
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Q3. Asked possible causes of ClassNotFoundException and MemoryOutOfBoundException
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Q4. Asked 2 or 3 case study questions like designing a car infotainment system.
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Q5. Asked about the usefulness of OOPS.
Ans. 
OOP enhances code reusability, maintainability, and organization through encapsulation, inheritance, and polymorphism.
• Encapsulation: Bundles data and methods, e.g., a 'Car' class with properties like 'speed' and methods like 'accelerate()'.

• Inheritance: Allows new classes to inherit properties from existing ones, e.g., 'ElectricCar' inherits from 'Car'.

• Polymorphism: Enables methods to do different things based on the ob...read more
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Q6. Asked how Java code compiles/runs(had to explain about creation of class file, JVM etc)
Ans. 
Java code compiles into bytecode, which the JVM executes, enabling platform-independent execution.
• Java source code (.java) is written by the developer.

• The Java compiler (javac) converts .java files into bytecode (.class files).

• Bytecode is platform-independent and can run on any system with a JVM.

• The Java Virtual Machine (JVM) interprets or compiles bytecode into machine code for execution.

• JVM manages memory and provide...read more
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Q7. Asked about working of https.
Ans. 
HTTPS secures communication over the internet using encryption and authentication protocols.
• HTTPS stands for HyperText Transfer Protocol Secure.

• It uses SSL/TLS protocols to encrypt data between the client and server.

• Encryption ensures that data transmitted (like passwords) is secure from eavesdroppers.

• Authentication verifies the identity of the website, preventing man-in-the-middle attacks.

• Example: When you see 'https:...read more
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Q1. Explain few challenges that you faced during a project/internship.
Ans. 
During my internship, I faced challenges related to communication, time management, and technical skills.
• Communication challenges: Difficulty in effectively conveying ideas and understanding instructions.

• Time management challenges: Struggling to prioritize tasks and meet deadlines.

• Technical skills challenges: Learning new technologies and troubleshooting issues.

• Example for communication challenge: Working in a team whe...read more
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Q2. Where do you see yourself in 5 years?
Ans. 
In 5 years, I see myself as a Senior Engineer, leading a team and working on complex projects.
• I envision myself taking on more responsibilities and leading a team of engineers.

• I hope to have gained expertise in my field and be recognized as a subject matter expert.

• I aim to work on challenging projects that require problem-solving and innovation.

• I plan to continue learning and staying updated with the latest technologie...read more
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Q3. Explain a project that you did
Ans. 
Developed a mobile app for tracking daily water intake
• Used React Native framework for cross-platform development

• Implemented a user-friendly interface with intuitive design

• Integrated a database to store and retrieve user data

• Implemented push notifications to remind users to drink water

• Conducted testing and debugging to ensure app functionality
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Q4. Tell me about a conflict that you may have faced during a project/internship
Ans. 
During my internship, I faced a conflict regarding the allocation of resources for a project.
• Conflict arose when team members disagreed on the distribution of resources.

• I suggested a fair and balanced approach to allocate resources based on individual strengths and project requirements.

• We held a team meeting to discuss and resolve the conflict.

• Through open communication and compromise, we reached a consensus on resourc...read more
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Hacker Rank test with medium difficulty

Q1. Technical discussion mainly around system design, different architectures, problem solving and coding question may be asked.
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A case study for a problem statement

Q1. SMPS ,IIPMS,NGSMPS,SPS,ETC
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Q1. About discussion salary
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Q1. How to work in delta syteam in live condition i am work in sytem in live condition with the help of proper seafty tools with insuleted and heand gloves shoes jectet cape and we are working in controller ...read more
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Q2. Why positive cable are grounding in this styem because possitve potantial is 0 this is the region to possitive cable are graunding
Ans. 
Grounding positive cables helps maintain safety and stability in electrical systems by preventing potential differences.
• Grounding provides a reference point for the electrical system, ensuring consistent voltage levels.

• It helps protect equipment from voltage spikes and surges, reducing the risk of damage.

• In case of a fault, grounding allows excess current to safely dissipate into the ground, preventing hazards.

• For exam...read more
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Basic logical question

Reasoning ability question

Q1. Machining questions related to GD&T
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Q2. What is positioning tolerance
Ans. 
Positioning tolerance refers to the allowable deviation from the desired position of an object or component.
• Positioning tolerance is a measure of how much an object or component can deviate from its intended position without affecting its functionality.

• It is typically specified in terms of a maximum allowable distance or angle.

• For example, in manufacturing, positioning tolerance is used to ensure that parts fit togethe...read more
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