Bharti Airtel Trainee Developer Interview Questions and Answers

1st round some apt qns,some prgramming qns are they asked

Q1. C depth concepts and some prgram
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Q1. Some DSA questions they asked
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Q1. Reverse a linked list.
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Q2. Merge sort on a array/
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Q1. Difference between streams and parallel streams
Ans. 
Streams process elements sequentially, while parallel streams process elements concurrently.
• Streams process elements one by one in a sequential manner.

• Parallel streams process elements concurrently, potentially utilizing multiple threads for faster processing.

• Streams are suitable for smaller datasets or when order matters.

• Parallel streams are more efficient for larger datasets or when order is not important.

• Example: St...read more
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Q2. What is Static keyword in Java do?
Ans. 
Static keyword in Java is used to create class-level variables and methods that can be accessed without creating an instance of the class.
• Static variables are shared among all instances of a class.

• Static methods can be called without creating an object of the class.

• Static keyword can be used to initialize a variable only once.

• Example: public static int count = 0;
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Q1. How to handle exception?
Ans. 
Handle exceptions by using try-catch blocks to gracefully manage errors in code execution.
• Use try-catch blocks to catch exceptions and handle them appropriately.

• Throw custom exceptions when necessary to provide more specific error information.

• Use finally block to execute code that should always run, regardless of whether an exception is thrown.

• Avoid catching generic exceptions like Exception class, instead catch specif...read more
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Q2. What is inheritance?
Ans. 
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Allows for code reusability by creating a new class based on an existing class

• Derived class inherits properties and behaviors of the base class

• Supports the 'is-a' relationship, where a derived class is a specialized version of the base class
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Q1. Memory management in java 8
Ans. 
Java 8 introduced improvements in memory management with features like Metaspace and G1 garbage collector.
• Java 8 introduced Metaspace to replace the PermGen space for class metadata storage.

• G1 garbage collector in Java 8 improves garbage collection performance by dividing the heap into regions.

• Java 8 also introduced the concept of String deduplication to reduce memory usage for String objects.
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Q2. CQRS pattern in microservices
Ans. 
CQRS pattern separates read and write operations in microservices for better scalability and performance.
• CQRS stands for Command Query Responsibility Segregation

• It separates the read and write operations in microservices

• Write operations update the data, while read operations retrieve the data

• Helps in improving scalability and performance by optimizing for each operation type
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Prepare for aptitude Test

Prepare for Data structures and Algorithm

Test had 2 sections..first section had 3 subsections with quants,verbal and logicals.2nd section is an English writing skill round where they give u a topic and u have to write ur views on it more than 200 words

Gd has the basic rules..they give a topic and u have to discuss on that

Q1. Hr asks you questions on your project,the programming language ur strong in and may be few code solving questions
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Q1. HR round tests your flexibility and adaptability skills.
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