Greet Technologies Senior Software Engineer Interview Questions and Answers

Q1. Core Java/Java 8 - Collection, Stream API, Method Reference, Framework- Spring basics, Struts2, Hibernate Database - Oracle
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Q1. How to secure your web applicaton
Ans. 
Securing a web application involves implementing various security measures to protect against threats and vulnerabilities.
• Use HTTPS to encrypt data transmitted between the client and server

• Implement input validation to prevent SQL injection and cross-site scripting attacks

• Use secure authentication methods like OAuth or JWT tokens

• Regularly update and patch software to fix security vulnerabilities

• Implement proper access
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Q2. How to handle large database
Ans. 
Use indexing, optimize queries, limit data retrieval, use caching, and consider sharding.
• Utilize indexing to improve query performance

• Optimize queries to reduce load on the database

• Limit data retrieval by using pagination or filtering

• Implement caching to store frequently accessed data

• Consider sharding to distribute data across multiple servers
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Topic about global warming

Questions on output based questions, and on machine coding

Q1. What is closure,hoisting,how js works ? , prototype , polyfill
Ans. 
Closure, hoisting, prototype, polyfill are key concepts in JavaScript that help understand how the language works.
• Closure refers to the ability of a function to access its lexical scope even when it is executed outside that scope.

• Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their containing scope during compilation.

• Prototype is an object that is associated with ev...read more
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Q1. Why are you looking for a job?
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First time attend aptitude test .

Q1. Any computer engineering basic questions
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Q2. C,C++,java , python
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Q3. What is inheritance.how many times of inheritance.
Ans. 
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Inheritance allows for code reusability and promotes the concept of 'is-a' relationship.

• There are different types of inheritance such as single inheritance, multiple inheritance, multilevel inheritance, and hierarchical inheritance.

• Example: Class B inheriting from Class A - 'class B: public A {}'
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Q4. How many characters are used in C.
Ans. 
C uses a set of 128 characters, including letters, digits, special characters, and control characters.
• C uses 26 letters (uppercase and lowercase), 10 digits (0-9), and various special characters like !, @, #, $, %, etc.

• C also includes control characters like newline, tab, carriage return, etc.

• The total number of characters used in C is 128.
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Q5. What is c. How many characters are used.
Ans. 
C is a programming language known for its efficiency and flexibility. It uses 256 characters.
• C is a high-level programming language used for system programming, embedded systems, and applications.

• C uses 256 characters, including letters, digits, special characters, and whitespace.

• Examples of characters in C include 'a', '1', '+', and ' '.
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Q1. Basics of your technical skills
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Q1. More Projects related questions
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Coding test had 2 medium dsa question both related to arrays

Time distance and work

Array, String, Stack, Queues, BFS

Q1. Tell me about yourself
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Q2. I am aryaman m singha hailed from assam guwahati
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