Yokogawa Full Stack Developer Interview Questions and Answers

Q1. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance allows a child class to override a method from its parent class, providing different func
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Q2. Why You choose java
Ans. 
I chose Java for its platform independence, strong community support, and extensive libraries.
• Platform independence allows Java code to run on any device with a JVM

• Strong community support ensures access to resources and help when needed

• Extensive libraries provide pre-built solutions for common programming tasks
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Q1. What is polymorphism?and explain
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.

• Example: A method that takes ...read more
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Q2. What is ADAS?explain function?
Ans. 
ADAS stands for Advanced Driver Assistance Systems. It refers to technologies that assist drivers in the driving process.
• ADAS includes features like adaptive cruise control, lane departure warning, and automatic emergency braking.

• These systems use sensors and cameras to monitor the vehicle's surroundings and provide alerts or assistance to the driver.

• ADAS aims to improve safety, reduce accidents, and enhance the overal...read more
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Q1. Oops and pointers
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Q2. Recursion and basic questions on for and while loop
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Q1. Angular related questions
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Q2. Springboot question
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Q1. General skill based managerial questions
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Q1. Salary discussion
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Q1. C and security, protocol, middleware
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Q1. Questions related to my M.Tech and Ph.D projects.
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Q2. Questions related to Kalman filter
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Q1. Basic questions related to area of expertise
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MCQs on basic aptitude questions, micro processor , micro controller , embedded systems and C programming language

Q1. C questions mostly and some in micro controllers and processors
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Q2. Call by value and call by reference
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Q3. Storage classes and pointers
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Q4. Functions and macros
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Q5. Memory allocation and deallocation
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Q1. About yourself, family , interest,etc
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Q1. Asked questions on basic JavaScript theoretical questions. Data types, rest and spread operator etc.
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Q2. Write a program to count the number of vowels in a string.
Ans. 
Program to count the number of vowels in a string.
• Loop through each character in the string and check if it is a vowel.

• Use a counter to keep track of the number of vowels found.

• Consider both uppercase and lowercase vowels.
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Q3. Asked also some basic questions from backend. Like how express.js, rest api works.
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Q4. What is the way to save large files (e.g. photos) into MongoDB database.
Ans. 
Use GridFS to save large files in MongoDB database.
• GridFS is a specification for storing and retrieving large files in MongoDB.

• It divides the file into smaller chunks and stores them as separate documents.

• GridFS provides a way to query and retrieve the file in chunks or as a whole.

• To save a large file, use the GridFS API provided by the MongoDB driver.

• Example: db.fs.files.insert({filename: 'photo.jpg', contentType: 'im
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Q5. What is the request, response and next parameter in express function?
Ans. 
Request, response and next are parameters in Express function for handling HTTP requests and responses.
• Request object represents the HTTP request and contains properties for the request query string, parameters, body, HTTP headers, etc.

• Response object represents the HTTP response that an Express app sends when it receives an HTTP request.

• Next function is a middleware function that passes control to the next middleware ...read more
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Q6. What is the difference between microservice and monolithic architecture?
Ans. 
Microservices are small, independent services that communicate with each other, while monolithic architecture is a single, unified system.
• Microservices are loosely coupled and can be developed and deployed independently

• Monolithic architecture is tightly coupled and requires the entire system to be deployed together

• Microservices allow for better scalability and fault tolerance

• Monolithic architecture is simpler to develo...read more
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