Harrier Information Systems Interview Questions and Answers

It was Very Easy and HR was Very Friendly Nature

Q1. What Is OOOps and explain those?
Ans. 
OOOps stands for Out Of Order packets. It refers to packets that arrive at their destination out of sequence.
• OOOps can occur in network communication when packets are sent out of order and arrive at the destination in a different order than they were sent.

• This can lead to issues in data transmission and can cause delays in processing the information.

• One way to handle OOOps is by using sequence numbers in packets to ens...read more
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Q2. What is Exception Handling ?
Ans. 
Exception handling is a mechanism to handle runtime errors and prevent program crashes.
• It is a way to deal with unexpected errors or exceptional conditions in a program.

• Exceptions can be caught and handled using try-catch blocks.

• Common exceptions include NullPointerException, ArrayIndexOutOfBoundsException, and IOException.

• Handling exceptions properly can improve the robustness and reliability of a software application
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Problems on dsa, SQL and development

Q1. What's Lock keyword
Ans. 
Lock keyword is used in C# to synchronize access to a shared resource by allowing only one thread to enter a critical section at a time.
• Used to prevent multiple threads from accessing a shared resource simultaneously

• Helps in avoiding race conditions and maintaining data integrity

• Can be used with Monitor class or lock statement
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Q2. What's Yield keywords
Ans. 
Yield keyword is used in C# to return a sequence of values one at a time.
• Yield keyword is used in iterator methods to return each element one by one.

• It allows the method to return multiple values without needing to store them all in memory.

• Yield return statement is used to return a value from the iterator method.
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Q1. Difference between inheritance and composition
Ans. 
Inheritance is an 'is-a' relationship where a class inherits properties and behaviors from another class. Composition is a 'has-a' relationship where a class contains an instance of another class.
• Inheritance involves creating a new class by using existing class's properties and behaviors.

• Composition involves creating a class that contains an instance of another class.

• Inheritance promotes code reusability and is used fo...read more
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Q1. Tell me about your overall experience
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Q2. What is the process that you had followed in the previous company
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Logical reasoning and quantitative aptitude was judged

Q1. Your favourite coding language and why?
Ans. 
My favorite coding language is Python because of its simplicity, readability, and versatility.
• Python is known for its clean and readable syntax, making it easier to write and maintain code.

• Python has a large standard library and many third-party libraries, making it versatile for various applications.

• Python is widely used in AI and machine learning due to libraries like TensorFlow and scikit-learn.
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Q2. Where do you see yourself in next 5 years?
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First there will be a topic given to you to write an article of length 300-400 words in 15 mins. This article writing is to check your knowledge of English language.
Then there is a 45 mins round test in which 40 questions will be asked.
20 Technical and 20 Programming.
The programming questions will be from C++, and you are required to choose the correct output of the given C++ program.
The technical aptitude questions were medium to hard.

Q1. It's a 1:30 hr round. In this part, there will be 4 coding questions from arrays topic which you can solve with any programming language you know. Along with this, you will have 2 questions from SQL and e...read more
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It was a handson coding test contains 4 coding questions on prime numbers patterns and array it was easy

Q1. All questions based on resume on javascript java and react and mainly on projects
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