CapitalOne Junior Analyst Interview Questions and Answers

Basic python, sql and pandas questions

Q1. Case study (Probability questions)
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Q2. Resume projects
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Q1. Qualification, skill
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Q2. How much do you have exp in accounting field
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Hacker earth , Rest api consuming and filtering response . 2 question

Q1. L1 Technical of 1 hour - Java , Spring Boot, OOPs
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Q2. JAVA 8 Features , OOPs Concept
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Q1. L2 technical , design , puzzle
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Q1. With CTO , recent projects , puzzle
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Q1. Directly discussion on expected
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Q1. What is your job role
Ans. 
I am responsible for assisting in various tasks and projects within the company.
• Supporting team members in daily operations

• Completing assigned tasks in a timely manner

• Assisting in research and analysis

• Participating in meetings and discussions
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Q2. What is the ctc
Ans. 
CTC stands for Cost to Company, which includes all expenses related to an employee's compensation.
• CTC includes salary, bonuses, benefits, and any other perks provided by the company

• It is the total amount of money a company spends on an employee in a year

• CTC is often used to negotiate job offers and understand the full value of a compensation package
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Test was based on arrays and some dsa concepts.

Q1. Internal Implementation of HashMap
Ans. 
HashMap is implemented using an array of linked lists to handle collisions.
• HashMap stores key-value pairs in an array of linked lists

• Hash function is used to determine the index of the array where the key-value pair will be stored

• Collision handling is done by chaining, where multiple key-value pairs with the same hash value are stored in the same linked list

• HashMap allows null keys and values

• HashMap is not synchronized...read more
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Q1. Does Java support pass by reference?
Ans. 
Yes
• Java uses pass by value for all variables, including object references.

• When an object reference is passed as an argument, a copy of the reference is passed, not the actual object.

• Modifying the reference inside the method will not affect the original reference outside the method.

• However, modifications to the object's state inside the method will be visible outside the method.
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Q2. Explain Singleton Pattern
Ans. 
Singleton pattern restricts the instantiation of a class to a single object.
• Singleton pattern ensures that only one instance of a class exists throughout the application.

• It provides a global point of access to the instance.

• Commonly used in scenarios where a single instance needs to coordinate actions across the system.

• Example: Database connection manager, logger, configuration manager.
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