RNF Technologies android Software Engineer Interview Questions and Answers

There are basic aptitude questions for freshers level

Q1. Oops concepts, basics of sql
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Q2. Basics of programming language
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It placed in hackerRank.question difficulty level was medium.

Q1. The difficulty depends upon who is taking your interview. But mostly asked questions were related to string and hashmap.
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Q1. It was more like a little bit technical and hr round. Mostly talk about personal profile like education,family background, hobbies and etc.
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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. What is threading
Ans. 
Threading is a programming technique that allows multiple tasks to run concurrently within a single process.
• Threading allows for parallel execution of tasks within a program.

• Threads share the same memory space, allowing for efficient communication and data sharing.

• Examples of threading in programming languages include Java's Thread class and Python's threading module.
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Q2. 7 layer of networking
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The 7 layers of networking refer to the OSI model, which is a conceptual framework used to understand how networks operate.
• Physical layer: Deals with physical connections and hardware (e.g. cables, switches)

• Data link layer: Manages data transfer between devices on the same network (e.g. Ethernet)

• Network layer: Handles routing and forwarding of data packets (e.g. IP)

• Transport layer: Ensures data is delivered reliably an...read more
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Q1. Prev salary and prev experience(even if you fake it you can pass interview, he is dumb about software development)
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Q2. What is your expectation
Ans. 
My expectation is to work in a challenging environment where I can utilize my skills to contribute to the success of the team and company.
• Expectation to work on complex projects that require problem-solving skills

• Desire to collaborate with talented team members to achieve common goals

• Opportunity for continuous learning and professional growth

• Expectation for clear communication and feedback from management
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Medium level leetcode

Q1. Basics of linked list. How to delete without head and address of current node is given?
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Q2. Simple join queries on 2 to 3 tables?
Ans. 
Join queries are used to combine data from multiple tables based on a related column between them.
• Use JOIN keyword to combine tables based on a common column

• Specify the columns to select from each table

• Use WHERE clause to specify the join condition
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It was a MCQ + Coding test

Q1. Questions on DSA
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Q2. Questions on CS Fundamentals
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Q1. Questions on Linux commands
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Q2. Questions related to oops and CS is
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It was around 2 hrs with 2 coding questions and some mcq questions on fundamentals

Q1. Print some numbers in a tree format
Ans. 
Print numbers in a tree format
• Use recursion to print numbers in a tree structure

• Start with the root node and recursively print child nodes

• Use indentation to represent levels in the tree

• Example: 1 --2 ----3 --4
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Q2. Factorial of a number, both iterative and recursive
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Factorial of a number can be calculated using both iterative and recursive methods.
• Iterative method involves using a loop to multiply numbers from 1 to n.

• Recursive method involves calling the function with n-1 until n reaches 1.

• Example: Factorial of 5 using iterative method: 5! = 5*4*3*2*1 = 120

• Example: Factorial of 5 using recursive method: 5! = 5 * 4!

• Example: Factorial of 4 using recursive method: 4! = 4 * 3!
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