Test Yantra Software Solutions Interview Questions, Process, and Tips

Q1. What is hoisting?
Ans. 
Hoisting is a JavaScript mechanism where variable and function declarations are moved to the top of their containing scope during compilation.
• Variable and function declarations are hoisted to the top of their scope.

• Only declarations are hoisted, not initializations.

• Function declarations take precedence over variable declarations.

• Hoisting can lead to unexpected behavior if not understood properly.
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Q2. What are es6 features?
Ans. 
ES6 features are new additions to JavaScript introduced in ECMAScript 2015.
• Arrow functions

• Let and const declarations

• Template literals

• Destructuring assignments

• Classes

• Promises

• Modules
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Q3. What is difference between let, const and vat?
Ans. 
let is block scoped, const is immutable, var is function scoped
• let: block scoped, can be reassigned

• const: block scoped, cannot be reassigned, but properties of objects can be changed

• var: function scoped, can be reassigned
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Q4. Write a program to sort an array.
Ans. 
Program to sort an array of strings
• Use a sorting algorithm like bubble sort, selection sort, or merge sort

• Iterate through the array and compare adjacent elements to sort them

• Ensure the sorting algorithm is efficient and handles edge cases
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Q5. Difference between map and for each?
Ans. 
Map applies a function to each element of an array and returns a new array, while forEach iterates over each element without returning a new array.
• Map returns a new array with the results of applying a function to each element of the original array.

• forEach simply iterates over each element of the array without returning a new array.

• Example: Using map to double each element in an array - [1, 2, 3].map(num => num * 2) wo...read more
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Q6. Write an arrow function.
Ans. 
An arrow function is a concise way to write functions in JavaScript.
• Arrow functions are written using the '=>' syntax.

• They do not have their own 'this' keyword.

• They are often used for short, one-line functions.

• Example: const add = (a, b) => a + b;
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Q1. About the current project roles & responsibilites
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Q2. What protocols do you know
Ans. 
I am familiar with protocols such as HTTP, HTTPS, TCP/IP, FTP, SMTP, and SNMP.
• HTTP - Hypertext Transfer Protocol used for web communication

• HTTPS - Secure version of HTTP using SSL/TLS encryption

• TCP/IP - Transmission Control Protocol/Internet Protocol for network communication

• FTP - File Transfer Protocol for transferring files over a network

• SMTP - Simple Mail Transfer Protocol for sending emails

• SNMP - Simple Network Man
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Q3. How MQTT publish and subscribe works draw the flow of it
Ans. 
MQTT publish and subscribe work by clients connecting to a broker, where publishers send messages to topics and subscribers receive messages from those topics.
• Clients connect to a broker to publish or subscribe to topics

• Publishers send messages to specific topics on the broker

• Subscribers receive messages from topics they are subscribed to

• Broker manages the routing of messages between publishers and subscribers
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Q1. Self introduction
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Q2. How good you are on testing and few real based scenarios
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Having basic set of data set questions

Having basic set of maths questions

Q1. Reason to leave the prior company
Ans. 
Seeking new challenges and growth opportunities
• Desire for career advancement

• Looking for a more challenging role

• Seeking a company with better work culture

• Relocation to a different city

• Company downsizing or restructuring
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Q2. Past work experience and some data
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Duration 20 mins, effective data set

For QA must have knowladge on Selenium,java,maven,git and any ci/cd must.