Testsigma Software Developer Interview Questions and Answers

30 questions test of aptitide online

Q1. Explain microprocessor
Ans. 
A microprocessor is a small electronic device that functions as the central processing unit of a computer.
• Microprocessors are made up of millions of transistors that perform calculations and execute instructions.

• They are commonly found in computers, smartphones, and other electronic devices.

• Examples of popular microprocessors include Intel's Core series and AMD's Ryzen series.

• Microprocessors process data and perform ta...read more
Answered by AI
Add your answer
Q2. What do you mean by iot
Ans. 
IoT stands for Internet of Things, which refers to the network of physical devices connected to the internet, allowing them to collect and exchange data.
• IoT involves connecting everyday objects to the internet to enable them to send and receive data.

• Examples of IoT devices include smart thermostats, wearable fitness trackers, and connected appliances.

• IoT technology enables automation, remote monitoring, and data analyt
Answered by AI
Add your answer

Q1. Basic Java questions
Add your answer
Q2. Spring, Spring boot basics
Add your answer

Q1. Microservices Communications
Add your answer
Q2. Project level experiences
Add your answer

East to medium level test covering basic aptitude topics and logical reasoning / pattern questions on AON

2 easy to medium level questions that can be solved in either python / cpp/ java

Q1. Technical interview was of 30 min. Complete focus is given to resume. But interview depends on interviewer. there were 18 panelists. Some were asked questions as easy as Prime no code. But I was asked to w...read more
Add your answer

Q1. Explain Encapsulation
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and only exposing necessary functionalities.

• It allows for better control over the data by preventing direct access from outside the class.

• Encapsulation also helps in achieving data abstraction and information hiding.

• Example: In a class representing a car, th...read more
Answered by AI
Add your answer
Q2. How to call rest API
Ans. 
To call a REST API, you can use tools like Postman or code in languages like JavaScript or Python.
• Use tools like Postman to make HTTP requests to the API endpoints

• In programming languages like JavaScript, use libraries like Axios or Fetch to make API calls

• Include necessary headers, parameters, and authentication tokens in the request

• Handle the response data accordingly, whether it's JSON, XML, or other formats
Answered by AI
Add your answer

Find out a string is palindrome or not

Q1. ACID properties
Ans. 
ACID properties are a set of properties that guarantee database transactions are processed reliably.
• ACID stands for Atomicity, Consistency, Isolation, Durability

• Atomicity ensures that all operations in a transaction are completed successfully or none at all

• Consistency ensures that the database remains in a consistent state before and after the transaction

• Isolation ensures that transactions are executed independently of...read more
Answered by AI
Add your answer
Q2. Event loop in node js
Ans. 
Event loop in Node.js manages asynchronous operations by executing callback functions when certain events occur.
• Event loop is responsible for handling I/O operations, timers, and callbacks in Node.js

• It allows Node.js to perform non-blocking operations efficiently

• Event loop continuously checks the event queue and executes callback functions when events are triggered
Answered by AI
Add your answer
Q3. Trigger and cursor
Add your answer
Q4. Primary vs foreign vs unique key
Ans. 
Primary key uniquely identifies a record, foreign key links to a primary key in another table, unique key ensures uniqueness of a column or set of columns.
• Primary key: uniquely identifies each record in a table (e.g. employee_id in an employees table)

• Foreign key: links to a primary key in another table to establish a relationship (e.g. department_id in an employees table linking to department_id in a departments table)

• ...read more
Answered by AI
Add your answer
Q5. Project related Questions and whats your job role in that project
Add your answer
Q6. Variable hoisting in js
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.

• Hoisting allows you to use a variable before it is declared, but it is best practice to declare variables at the top of the scope.

• Example: console.log(myV
Answered by AI
Add your answer
Q7. Function closure in js
Ans. 
Function closure in JavaScript allows a function to access variables from its outer scope even after the outer function has finished executing.
• Function closures occur when a function is defined within another function and the inner function has access to the outer function's variables.

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

• Example: function outerFunction() { let outerVar = 'I...read more
Answered by AI
Add your answer
Q8. Shallow vs deep copy in js
Ans. 
Shallow copy creates a new object but references the same nested objects, while deep copy creates a new object with copies of all nested objects.
• Shallow copy only copies the top-level object, not the nested objects.

• Deep copy creates new copies of all nested objects, ensuring they are independent.

• In JavaScript, shallow copy can be achieved using Object.assign or spread operator, while deep copy can be achieved using JSO
Answered by AI
Add your answer

Q1. Virtual function, smart pointers, IPC
Add your answer

Q1. Basic C program debugging (Find the output, and find the error) and Flowchart based questions (Finding output)
View 2 more answers

Multiple questions on integer array manipulation, with one pattern programming

Advanced integer/character array manipulation (2D arrays)

Q1. All basic HR questions like Tell me about yourself, Previously worked projects, and then technical questions based on desired programming language, one coding question to solve and 2 aptitude questions wit...read more
Add your answer

Q1. Same as previous technical HR round, but they conducted the same technical + HR round for like 5 times
Add your answer