Unimech Aerospace Software Developer Interview Questions and Answers

Q1. Coding samples and expected output
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Q1. Virtual functions Polymorphism Runtime polymorphism compile time polymorphism Constructor Destructor Destructor overloading possible why Deep copy vs shallow copy Program for operator overloading Program f...read more
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Q1. Working of project
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Q1. Discussion about package
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Write a simple algorithm for string manipulation

Q1. What is gcd? And explain it
Ans. 
gcd stands for greatest common divisor, the largest positive integer that divides two or more numbers without leaving a remainder.
• gcd is used to find the largest integer that can evenly divide two or more numbers.

• It is commonly used in mathematics and computer science algorithms.

• For example, the gcd of 12 and 18 is 6, as 6 is the largest number that can divide both 12 and 18 without leaving a remainder.
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Q2. What is arc and explain it
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ARC stands for Automatic Reference Counting, a memory management technique used in programming languages like Objective-C and Swift.
• ARC automatically tracks and manages the memory used by objects in a program

• It increases the retain count of an object when it is referenced and decreases it when it is no longer needed

• ARC helps prevent memory leaks and retain cycles in iOS and macOS development
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Round duration - 90 minutes
Round difficulty - Medium

It was in the afternoon. I have to switch on my webcam during test. 1 person taking the test and 3 people were monitoring me. they ask many questions apart from the test as well. He give me some situations and ask me to give solution for the problem by writing algorithm and code.

Q1. Program to delete a line given the line number from a file.
Ans. 
1) Open the source file in input mode and read it character by character.
2) Open another file in output mode and place contents in the file character by character.
3) Rename the other file to the source file.
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Q2. Anagrams
You have been given an array/list of strings 'inputStr'. You are supposed to return the strings as groups of anagrams such that strings belonging to a particular group are anagrams of one ...read more
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1. Sort the given string.
2. Open the words.txt file using file handling ifstream to read the file in C++ as: ifstream words(“file.txt”);
3. For each word in the file words.txt sort the word and compare it with the given sorted string.
4. If both the string matches in the above step then print the current word in the file words.txt.
5. Close the file after all the words has been checked.
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Round duration - 90 minutes
Round difficulty - Medium

It was in the evening. I have to switch on my webcam during test. 1 person taking the test and 3 people were monitoring me. They asked many questions apart from the test as well.

Q1. What is need of Virtual Memory?
Ans. 
Tip 1: Read Operating System Concepts by Avi Silberschatz and Peter Galvin.
Tip 2: Do practice for CPU scheduling.
Tip 3: Learn concept and need of paging.
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Round duration - 30 minutes
Round difficulty - Medium

It was in the evening. There was total 3 persons in the meeting. They asked me many questions regarding my projects and my previous experience too. The interviewer were very friendly.

Q1. What are the unary operations in Relational Algebra?
Ans. 
Tip 1: Read Database System Concepts” by Abraham Silberschatz and S Sudarshan.
Tip 2: Do practice sql problems too.
Tip 3: Attend online courses on platforms like Coding Ninjas, Udemy etc related to subjects.
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Q2. How many types of database languages are there?
Ans. 
Tip 1: Read Database System Concepts” by Abraham Silberschatz and S Sudarshan.
Tip 2: Do practice sql problems too.
Tip 3: Attend online courses on platforms like Coding Ninjas, Udemy etc related to subjects.
Answered by CodingNinjas
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Round duration - 90 minutes
Round difficulty - Medium

It was in the morning. It was a one to one conversation. He asked me questions regarding my lifestyle, interests and work experience too. He asked me to tell me about myself for about 5 minutes. Then we talk a lot about current affairs too. Then we talked about package too. The interviewer was very nice and friendly in nature.

Q1. What is endianness and wrote c program for endianness
Ans. 
Endianness refers to the order in which bytes are stored in memory. There are two types: big-endian and little-endian.
• Big-endian systems store the most significant byte first, while little-endian systems store the least significant byte first.

• Endianness can affect how data is interpreted and manipulated in a computer system.

• Example: In a big-endian system, the number 0x12345678 would be stored as 12 34 56 78 in memory.

• ...read more
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Q2. Basic sring programs
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Simple string manipulation

Q1. Basic c# questions
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Q1. All about basic dsa
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Q2. Tech stack related what we mentioned in resume
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Q1. Challenge's we faced ?
Ans. 
Some challenges we faced included tight deadlines, changing requirements, and technical limitations.
• Tight deadlines required us to work efficiently and prioritize tasks.

• Changing requirements meant we had to adapt quickly and communicate effectively with stakeholders.

• Technical limitations forced us to find creative solutions and workarounds to achieve our goals.
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Q2. How to overcome challenges?
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To overcome challenges, I break them down into smaller tasks, seek help from colleagues, stay organized, and stay persistent.
• Break down the challenge into smaller tasks to make it more manageable

• Seek help from colleagues or mentors for advice and support

• Stay organized by creating a plan or timeline to track progress

• Stay persistent and motivated, even when facing setbacks
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MCQ on Python and some aptitude questions.

Q1. Array rotation coding question followed by past project experience
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Q1. STAR type interview.
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