Juspay Technologies Software Development Engineer Intern Interview Questions and Answers

3 dsa questions medium level

Q1. 2 medium level dp questions based on string and stocks
Add your answer
Q2. One hard question based on graph
Add your answer

Q1. Hr questions and java , springboot questions etc
Add your answer

Technical Aptitude on singalton pattern

Q1. What is man in middle attack?
Ans. 
A man-in-the-middle attack is a cyber security attack where the attacker secretly intercepts and possibly alters the communication between two parties.
• Attacker intercepts communication between two parties

• Attacker may alter the communication

• Commonly occurs in public Wi-Fi networks

• Can lead to data theft or unauthorized access
Answered by AI
Add your answer
Q2. How to protect api?
Ans. 
Protecting API involves using authentication, authorization, encryption, rate limiting, and monitoring.
• Implement authentication mechanisms such as OAuth, JWT, or API keys

• Use authorization to control access to different parts of the API

• Encrypt sensitive data using SSL/TLS

• Implement rate limiting to prevent abuse and protect against DDoS attacks

• Monitor API traffic for unusual activity and potential security threats
Answered by AI
Add your answer
Q3. Whats is csrf ?
Ans. 
CSRF stands for Cross-Site Request Forgery, a type of attack where a malicious website tricks a user into performing actions on another website without their knowledge.
• CSRF attacks exploit the trust that a site has in a user's browser, by sending unauthorized requests using the user's session.

• Prevent CSRF attacks by using tokens in forms, checking the origin of requests, and implementing proper authentication and autho...read more
Answered by AI
Add your answer

Q1. Why you want ti join airpay?
Add your answer
Q2. Why you leave current organisation?
Add your answer

Test was based on arrays and some dsa concepts.

Coding and aptitude round

Q1. Tree dsa questions
Add your answer

Q1. Horse race question
Add your answer

Q1. Location specific question
Add your answer

3 medium leetcode questions

Q1. Questions of SQL and DBMS 2 DSA questions
Add your answer
Q2. Valid parentheses in o(1) space
Ans. 
Check if parentheses are valid in constant space
• Use a counter to keep track of open parentheses

• Increment counter for '(' and decrement for ')'

• If counter goes negative or not zero at end, return false
Answered by AI
Add your answer

Q1. Projects and brain stroming
Add your answer
Q2. Projects were asked in depth
Add your answer
Q3. Interviewer had good technical knowledge
Add your answer