Virtusa Consulting Services Interview Questions, Process, and Tips

Q1. Coding on collections (HashMap)
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Q2. Arrays and String
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Q1. Explain Marker Interface.
Ans. 
Marker interface is an empty interface used to mark classes for special treatment.
• Marker interface has no methods or fields.

• It is used to provide metadata to the JVM or other tools.

• Examples include Serializable interface in Java.
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Q2. Explain OOPs concepts.
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OOPs concepts are the principles of Object-Oriented Programming, including encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: The ability for objects of different classes to respond to the same method call.

• Abstraction: Hidi...read more
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Q3. Explain synchronization.
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Synchronization is the coordination of multiple processes or threads to ensure they access shared resources in a controlled manner.
• Synchronization is important in multi-threaded programming to prevent race conditions and ensure data consistency.

• Common synchronization mechanisms include locks, semaphores, and monitors.

• For example, using a mutex lock to protect a critical section of code from being accessed by multiple t
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Q4. Explain Normalization.
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Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization is used to eliminate data redundancy by breaking up tables into smaller, related tables.

• It helps in reducing data anomalies such as update, insert, and delete anomalies.

• Normalization is achieved through a series of stages called normal forms, such as 1NF, 2NF, 3NF, and BCNF.

• For example, in a datab...read more
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Q5. Explain Array and ArrayList
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Array is a fixed-size collection of elements of the same data type, while ArrayList is a dynamic-size collection of objects.
• Array is a static data structure with a fixed size, while ArrayList is a dynamic data structure that can grow or shrink in size.

• Arrays can only store elements of the same data type, while ArrayList can store objects of different data types.

• Arrays are accessed using index positions, while ArrayList...read more
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Q1. Tell me about yourself.
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I am a recent graduate with a degree in Computer Science and a passion for software development.
• Recent graduate with a degree in Computer Science

• Passionate about software development

• Experience with programming languages like Java and Python
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Q2. Are you willing to change location if needed?
Ans. 
Yes, I am willing to change location if needed for the job.
• I am open to relocating for the right opportunity

• I understand that sometimes job requirements may involve changing locations

• I am flexible and adaptable to new environments
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Q3. Will you be restricted to day shifts?
Ans. 
No, I am open to working different shifts as required.
• I am flexible and willing to work different shifts based on the company's needs.

• I understand the importance of being adaptable in the software engineering field.

• I am open to discussing shift preferences during the interview process.
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Discussion about information security fundamentals and CIA traid

Q1. Tell me about yourself
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Q2. Tell me about your research
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Cloud migration, agile and waterfall questions, setting up new businesses abroad

Q1. Tell me about yourself, why virtusa
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Q1. What is a trigger
Ans. 
A trigger is an event or condition that initiates a specific action or process.
• Triggers are commonly used in programming and databases.

• They can be used to automate tasks or initiate processes based on certain conditions.

• Examples include a trigger that sends an email when a new user registers on a website, or a trigger that updates a database record when a certain field is changed.

• Triggers can also be used in marketing ...read more
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Q2. What is right outer join
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Right outer join returns all records from the right table and matching records from the left table.
• It includes all the records from the right table and only matching records from the left table.

• If there is no match in the left table, the result will contain NULL values.

• It is denoted by RIGHT OUTER JOIN or RIGHT JOIN keyword in SQL.

• Example: SELECT * FROM right_table RIGHT JOIN left_table ON right_table.id = left_table.i
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Q3. What are types in Oracle
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Types in Oracle are data types that define the type of data that can be stored in a column or variable.
• Oracle has several built-in data types such as NUMBER, VARCHAR2, DATE, and CLOB.

• NUMBER is used to store numeric values, VARCHAR2 is used to store character strings, DATE is used to store dates and times, and CLOB is used to store large character strings.

• Oracle also supports user-defined data types, which can be create...read more
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Q4. What is an array type
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An array type is a data type that stores a collection of elements of the same data type in a contiguous memory location.
• Arrays can be one-dimensional or multi-dimensional

• Elements in an array can be accessed using an index

• Arrays can be initialized with a fixed size or dynamically resized

• Examples of array types include int[], double[], and string[]
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Q1. About yourself and last company
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