KJ System SDE Interview Questions and Answers

Q1. System architecture
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Q2. Dict ,list and other questions
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Q1. What is nodejs multi threading
Ans. 
Node.js is single-threaded, but it can support multi-threading through child processes and worker threads.
• Node.js is single-threaded, meaning it runs on a single thread in the event loop.

• To achieve multi-threading, Node.js can create child processes using the 'child_process' module.

• Another way to achieve multi-threading in Node.js is through worker threads using the 'worker_threads' module.

• Using child processes or work...read more
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General aptitude and reasoning

Dsa three codes for 2 hours

Q1. Explain josephus problem in O(1) time complexity
Ans. 
Josephus problem is a famous theoretical problem involving a circle of people where every kth person is eliminated until only one person remains.
• Josephus problem involves a circle of n people where every kth person is eliminated until only one person remains.

• The problem can be solved in O(1) time complexity by using the formula: f(n, k) = (f(n-1, k) + k) % n.

• For example, if n=5 and k=2, the last person remaining would
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Q1. Laravel Question
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Q1. Salary Discussion
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Q1. What’s functional interface and uses. Server side and client side load balancing.
Ans. 
Functional interface is an interface with only one abstract method. Load balancing is used to distribute workload.
• Functional interface is used in lambda expressions in Java.

• Load balancing is used to distribute workload across multiple servers.

• Server side load balancing is done by a load balancer that sits between the client and server.

• Client side load balancing is done by the client application itself.

• Load balancing im...read more
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Q1. Transactional levels and propagation labels cases. Find the sequence of Substring duplicates counts.
Ans. 
The question is unclear and seems unrelated to software development.
• Ask for clarification on the question.

• Transactional levels and propagation labels are related to database transactions.

• Substring duplicates counts can be solved using string manipulation.

• It is unclear how these two topics are related.
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Basics of aptitude questions like relation,train,boat, probability,number series , and so on...

String occurrence, array list

Q1. Man crossing a bridge
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Q2. Wrong label on the boxes
Ans. 
The wrong label on the boxes can cause confusion and errors in the software development process.
• Ensure proper labeling of boxes to avoid confusion

• Double check labels before using them in the development process

• Communicate with team members to clarify any discrepancies in labeling
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There was an basic question in Aptitude

They told me to tell about social media goods and Bad in Future

Array Questions,Number Coadings,Basics of OOPS

Q1. Tell about yourself
Ans. 
I am a passionate software developer with experience in building web applications using various technologies.
• Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

• Proficient in backend development with Node.js and databases like MongoDB and MySQL

• Familiar with version control systems like Git and deployment tools like Heroku

• Strong problem-solving skills and ability
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Q2. They are logical question, Cake Question
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25 questions , 1 hour

1 coding , 2 logical question

Q1. For loop , 2 logical
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Q2. About final year projrct
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