NSE.IT Senior Engineer 3 Interview Questions and Answers

Q1. How to print numbers 1-100 using two go routines sequentially
Ans. 
Use two go routines to print numbers 1-100 sequentially
• Create two go routines, one for printing odd numbers and one for printing even numbers

• Use channels to synchronize the two go routines and ensure sequential printing

• Start the odd number go routine first, then start the even number go routine
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Q2. How to write generator functions using go language
Ans. 
Generator functions in Go language allow for efficient iteration over a sequence of values.
• Use the 'yield' keyword to return values one at a time from the generator function.

• Generator functions are defined with a 'func' keyword followed by the function name and 'chan' keyword.

• Example: func myGenerator() chan int { }

• Use a 'for' loop to iterate over the values returned by the generator function.
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Q1. Why do we use sync.Cond and sync.once
Ans. 
sync.Cond is used for signaling between goroutines and sync.Once is used for running initialization code only once.
• sync.Cond is used for goroutines to wait for or signal each other when a certain condition is met

• sync.Once is used to ensure a function is only executed once, typically used for initialization tasks

• Example: Using sync.Cond to coordinate multiple goroutines accessing a shared resource

• Example: Using sync.Onc...read more
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Q2. Understanding about reflect package
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Q1. Basic questions on Javascript like closure, event loop,hoisting and some coding questions on map,filter, reduce
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Q2. Basic conceptual questions on React, redux
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Q1. Coding questions on JS and React
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Q1. Salary Expectation
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Aptitude test with aptitude based questions

Q1. What is variable hoisting.
Ans. 
Variable hoisting is a behavior in JavaScript where variable declarations are moved to the top of their scope during compilation.
• Variable declarations are hoisted to the top of their function or global scope.

• Only the declarations are hoisted, not the initializations.

• This can lead to unexpected behavior if variables are accessed before they are declared.
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Q2. What is closures in js
Ans. 
Closures in JavaScript allow functions to access variables from an outer function even after the outer function has finished executing.
• Closures are created whenever a function is defined within another function.

• Inner functions have access to the outer function's variables even after the outer function has returned.

• Closures are commonly used to create private variables and functions in JavaScript.

• Example: function outer...read more
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Q1. Say about the job description that what you understood
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Q2. Why do you want to join as a consultant as you have good coding knowledge
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Q3. Why do you want to become a consultant.. though you have good coding knowledge
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Q1. How do you read an external text file
Ans. 
To read an external text file, you can use file handling techniques in programming languages like Python or Java.
• Use file handling functions like open(), read(), and close() in Python to read an external text file.

• In Java, use classes like FileReader and BufferedReader to read text files.

• Specify the file path and mode (read mode) when opening the file.

• Read the contents of the file line by line or as a whole, depending ...read more
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Q2. Write a java program to find the occurrences of characters
Ans. 
Java program to find occurrences of characters in a string
• Create a HashMap to store characters and their counts

• Iterate through the string and update the counts in the HashMap

• Print the characters and their counts from the HashMap
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Q1. What is Pricing condition
Ans. 
Pricing condition is a rule or criteria used to determine the price of a product or service.
• Pricing conditions can include factors such as quantity discounts, promotional offers, and contract terms.

• They are typically set in pricing tables within a company's ERP system.

• Pricing conditions are used to calculate the final price that a customer will pay for a product or service.

• Examples of pricing conditions include discoun...read more
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Q2. What is structure of Order
Ans. 
The structure of an Order typically includes customer information, product details, quantity, price, and payment information.
• Customer information (name, address, contact details)

• Product details (name, description, SKU)

• Quantity of each product ordered

• Price of each product

• Payment information (payment method, total amount)

• Order status (pending, shipped, delivered)
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Q3. How plant will be determine in Sales order
Ans. 
Plants in a sales order are determined based on the customer's requirements, availability, pricing, and shipping logistics.
• Plants are determined based on the customer's location and delivery preferences.

• Availability of the product at different plant locations is considered.

• Pricing and discounts may vary based on the plant from which the product is shipped.

• Shipping logistics such as distance, transportation costs, and d...read more
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Q1. Questions on nodejs concepts.
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Coding test was on Java programs. Basically for loop programs.