Doceree Senior Software Engineer Interview Questions and Answers

The aptitude test evaluates problem-solving, coding skills, and logical reasoning, offering a fair challenge to showcase technical expertise.

Q1. How do you handle conflicts in a team project?
Ans. 
I address conflicts in team projects by promoting open communication, active listening, and seeking compromise.
• Encourage open communication among team members to address conflicts early on

• Practice active listening to understand all perspectives and concerns

• Seek compromise and find common ground to resolve conflicts effectively
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Q2. What is the difference between an interface and an abstract class?
Ans. 
Interface is a contract that defines the methods a class must implement, while an abstract class can have both implemented and abstract methods.
• Interface can only have abstract methods and cannot have any implementation, while abstract class can have both abstract and implemented methods.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Interfaces are used to achieve multiple inheri...read more
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Q1. What is the difference between an abstract class and an interface in object-oriented programming?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have method implementations, while interface cannot.

• A class can implement multiple interfaces, but can only inherit from one abstract class.

• Interfaces are used to define contracts for classes to implement, while abstract classes are used to provide a common base for subclasses.

• Example: Abstr...read more
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Q2. Abstract classes can have implemented methods; interfaces can only have declarations (before JAVA 8).
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Give 10 questions from node js backend

Q1. Ask about angular and node js
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Q2. What is package.json
Ans. 
package.json is a file used in Node.js projects to manage dependencies, scripts, and metadata.
• It is a JSON file that contains information about the project, such as name, version, dependencies, and scripts.

• It is used to manage project dependencies by listing them in the 'dependencies' and 'devDependencies' fields.

• It allows developers to define scripts for tasks like building, testing, and running the project.

• Example: {...read more
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Q3. What is components in angular,how share data to component
Ans. 
Components in Angular are building blocks of an application. Data can be shared between components using input properties and output events.
• Components in Angular are reusable, self-contained units of code that define a part of the user interface.

• Data can be shared to a component using input properties, where data is passed from the parent component to the child component.

• Data can also be shared from a child component t...read more
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Q4. What is === and == ,and wher use === is real time projects
Ans. 
=== is strict equality operator, while == is loose equality operator. === is commonly used in real-time projects for accurate comparisons.
• === is a strict equality operator that checks both value and type of operands

• == is a loose equality operator that only checks the value of operands

• === is commonly used in real-time projects to ensure accurate comparisons and prevent unexpected type coercion issues
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Q5. Write arrow function syntax
Ans. 
Arrow function syntax in JavaScript
• Arrow functions are concise syntax for writing function expressions in JavaScript

• They have a shorter syntax compared to traditional function expressions

• They do not have their own 'this', 'arguments', 'super', or 'new.target' keywords
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Q6. What is difference between arrow function and anonymous function
Ans. 
Arrow functions are concise syntax for writing function expressions, while anonymous functions do not have a name.
• Arrow functions have a shorter syntax compared to anonymous functions.

• Arrow functions do not have their own 'this' keyword, while anonymous functions do.

• Arrow functions do not have 'arguments' object, while anonymous functions do.

• Arrow functions are not hoisted, while anonymous functions are hoisted.
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Aptitude questions with some basic coding questions

They have given 3 coding questions and some pseudo codings

Q1. Tell about your self
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Q2. Some coding questions
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Q1. What is git, how GitHub work without git
Ans. 
Git is a version control system used for tracking changes in code. GitHub is a platform for hosting code repositories and collaborating with others.
• Git is a distributed version control system that allows multiple developers to work on the same codebase without conflicts.

• GitHub is a web-based platform that provides hosting for Git repositories, along with additional features like issue tracking, pull requests, and proje...read more
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Q2. What is salting, hashing, rainbow table
Ans. 
Salting, hashing, and rainbow tables are techniques used in cryptography to secure passwords.
• Salting involves adding a random string of characters to a password before hashing to prevent attacks like rainbow tables.

• Hashing is the process of converting a password into a fixed-length string of characters using a cryptographic hash function.

• Rainbow tables are precomputed tables used to crack hashed passwords by matching a
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Q1. What is jdk, string related questions, basic java oops questions?
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Two sections numerical and English consist of 200 questions in each in just 30 mins time each and difficulty is dead easy

Interviewer asked me to print this
XYZYX
YZYX
ZYX
YX
X
I have shown it to him but in return he asked me to print that if I give 5 as user input .He didn't give full clarity before starting the code .....worst experience

In this round there are two codingquestion firs was pythagora triplet,and second was sort array 0's 1's,2's.and to solve this program time limit was 1 hour.

Q1. OOPs Related Basic question
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Q2. Exception Handling
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Q3. Multithreading related basic question
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