RNF Technologies Software Engineer Interview Questions and Answers

Q1. Resume related questions
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Q1. Technology related
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Q1. Discuss everything
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Basic Aptitude was taken on their platform

2 Coding questions were taken with moderate difficulty

Q1. Introduce Yourself and your technical Skills
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Duration:30 min
Question from percentage,ratios ,HCF/LCM etc.,
Logical reasoning, English

Q1. Reverse a string by making groups of given 'm' characters
Ans. 
Reverse a string by grouping 'm' characters together
• Iterate through the string in groups of 'm' characters

• Reverse each group of 'm' characters

• Concatenate the reversed groups to get the final reversed string
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Q1. General HR questions
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Q2. What is your family background?
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Q3. Why should we hire you?
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Computer Networks, SQL, DBMS, aptitude questions on trains, boats , profit and loss. 2 coding questions. Total duration was 1.5 hrs.

Q1. Questions based on projects and certifications mentioned in the resume. OOPs Time complexity based questions, basic algorithm logics like dijkstra's , sorting algorithms . Question in OS like threads and ...read more
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Q1. Reversing a string, writing sql queries, how does fetching of information from web takes place. Why you want to join Truminds?
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Q1. 1.semaphore vs mutex 2.volatile 3.Interrupt 4.memory layout in c
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Q1. About my platform related
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Q2. Abot my platform related
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UI design and crud operation tasks

Q1. Salary discussion fully connected
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Q1. Basic C programming, file handling operations
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Q2. SIP protocol related qestions, linux questions
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Q3. File data manipulation code
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Q1. Compensation discussion, relocation , reason for leaving previous organization
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Q1. What is oops in java
Ans. 
OOPs in Java stands for Object-Oriented Programming which is a programming paradigm based on the concept of objects.
• OOPs is a way of programming that focuses on objects and their interactions

• It involves concepts like inheritance, polymorphism, encapsulation, and abstraction

• Java is an object-oriented programming language that supports OOPs concepts

• Example: Creating a class for a car with properties like make, model, and
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Q2. What are collections
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Collections are data structures that store and organize objects in Java.
• Collections provide a way to group related objects together.

• They can be used to perform operations on groups of objects, such as sorting or searching.

• Examples of collections include lists, sets, and maps.
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Q3. What is exception handling
Ans. 
Exception handling is a mechanism to handle runtime errors and prevent program crashes.
• It allows the program to gracefully handle errors and continue execution.

• It involves catching and handling exceptions using try-catch blocks.

• Common exceptions include null pointer, arithmetic, and array index out of bounds.

• Proper exception handling improves code reliability and maintainability.
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Q4. What is multi threading
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Multi threading is the ability of a program to perform multiple tasks concurrently.
• It allows for better utilization of CPU resources

• It can improve program performance and responsiveness

• Examples include web servers handling multiple requests simultaneously

• It requires careful synchronization to avoid race conditions and deadlocks
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Q5. Explain jdbc connection pooling
Ans. 
JDBC connection pooling is a technique of reusing database connections to improve performance.
• Connection pooling reduces the overhead of creating and destroying database connections.

• It maintains a pool of pre-initialized connections that can be reused by multiple clients.

• It improves application scalability and performance by reducing the time spent in establishing a new connection.

• Popular connection pooling frameworks
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