Dilyt SQL and BI Developer Interview Questions and Answers

Online test to check our mathematical ability and logical reasoning

Q1. Online test and also one to one from lead engineers
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Q1. Salary and travelling related details if finalized
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Q1. Face to face virtual interview from manager
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There will be 3 coding questions. They are of medium and hard level.

Q1. Sort array consisting 0's 1's and 2's without inbuilt functions
Ans. 
Sort an array of 0's, 1's, and 2's without using inbuilt functions.
• Use three pointers to keep track of the last index of 0's, 1's, and 2's

• Iterate through the array and swap elements based on their value

• Continue until all elements are sorted
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Q1. Os cn related questions
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Q1. Java questions and general hr questions
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Q1. IAM & PAM Operations
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Q2. Related to Sailpoint
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Q1. What is Java?
Ans. 
Java is a versatile, object-oriented programming language designed for portability across platforms.
• Object-Oriented: Supports concepts like inheritance, encapsulation, and polymorphism.

• Platform-Independent: Write once, run anywhere (WORA) due to Java Virtual Machine (JVM).

• Rich API: Offers a wide range of libraries for tasks like networking, I/O, and GUI development.

• Strongly Typed: Enforces strict type checking at compi...read more
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Q2. What are the methods to effectively use threads in programming?
Ans. 
Effective thread usage enhances performance and responsiveness in applications by enabling concurrent execution of tasks.
• Use thread pools to manage a fixed number of threads, reducing overhead. Example: Java's ExecutorService.

• Implement synchronization mechanisms (like mutexes) to prevent race conditions. Example: using 'synchronized' keyword in Java.

• Utilize concurrent data structures (like ConcurrentHashMap) to avoid l...read more
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Q1. Delegate, serialization, deserialization,
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Q2. Sdlc, aglie, waterfall metthod
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Q3. Simple query, string reversal coding
Ans. 
String reversal involves reversing the order of characters in a given string.
• Use built-in functions: In Python, use slicing: `reversed_string = original_string[::-1]`.

• Iterative approach: Loop through the string from the end to the beginning and build a new string.

• Using stack: Push each character onto a stack and then pop them to get the reversed string.

• Example: For input 'hello', output should be 'olleh'.
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Q1. What is interface ?
Ans. 
An interface in software development defines a contract for classes to implement, specifying methods and properties.
• Interfaces in programming languages like Java and C# allow for multiple inheritance by defining a set of methods that a class must implement.

• Interfaces provide a way to achieve abstraction and polymorphism in object-oriented programming.

• Interfaces are used to define common behavior that multiple classes c...read more
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Q2. Hat is encapsulation
Ans. 
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.
• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• It allows for better control over the data by preventing direct access from outside the class.

• Encapsulation promotes code reusability and makes the code easier to maintain.

• Example: In a class representing a car, the variables lik...read more
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