Citicorp Interview Questions, Process, and Tips

The assessment consisted of two moderate-level questions related to data structures and algorithms, focusing on strings and 2D arrays, within a time frame of 45 minutes. In the web development section, there were 15 questions each from React and Angular.

Q1. What is object-oriented programming (OOP), and can you explain the concepts of shallow copy and deep copy? Additionally, what technology stack would you choose for a project, and what are the reasons behin...read more
Ans. 
OOP is a programming paradigm based on the concept of objects, with shallow copy creating a new object with references to the original, and deep copy creating a new object with copies of the original's values.
• OOP is a programming paradigm that focuses on objects and classes.

• Shallow copy creates a new object that references the original object's data.

• Deep copy creates a new object with copies of the original object's da...read more
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Q2. What are the features of the project?
Ans. 
The project features include real-time data processing, machine learning algorithms, and user-friendly interface.
• Real-time data processing for instant updates

• Machine learning algorithms for predictive analysis

• User-friendly interface for easy navigation
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Q1. What is difference between join and merge?
Ans. 
Join is used in SQL to combine rows from two or more tables based on a related column, while merge is used in data manipulation tools like pandas to combine data frames based on common columns.
• Join is typically used in SQL queries to combine rows from two or more tables based on a related column

• Merge is used in data manipulation tools like pandas to combine data frames based on common columns

• Join can be inner, outer, l...read more
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Q2. What is left join?
Ans. 
Left join is a type of join operation in SQL that returns all rows from the left table and the matched rows from the right table.
• Left join combines rows from two tables based on a related column between them.

• If there is no match for a row in the right table, NULL values are used for the columns from the right table.

• Example: SELECT * FROM table1 LEFT JOIN table2 ON table1.id = table2.id;
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Q1. Why do you want to move to Citi?
Ans. 
I want to move to Citi because of its reputation for innovation and global presence.
• Citi is known for its cutting-edge technology and data analytics, which aligns with my skills and interests.

• I am excited about the opportunity to work in a diverse and dynamic environment at Citi.

• Citi's global presence offers the chance to work on a wide range of projects and collaborate with colleagues from around the world.
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Q2. What is expected CTC?
Ans. 
Expected CTC is negotiable based on candidate's experience, skills, and the company's budget.
• Expected CTC depends on the candidate's level of experience and skills.

• It also depends on the company's budget and industry standards.

• Negotiation is common during the offer stage to reach a mutually agreeable CTC.

• Candidates can research average salaries for similar roles to have an idea of what to expect.
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Q1. What challenges did you overcome in your last company?
Ans. 
I overcame challenges related to data accuracy and communication in my previous company.
• Implemented new data validation processes to improve accuracy

• Improved communication between departments to streamline workflow

• Resolved discrepancies in risk assessment reports through thorough analysis
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Q2. Explain a challenge that you solved?
Ans. 
I successfully implemented a new risk assessment model for a financial institution.
• Identified limitations of current risk assessment model

• Researched and analyzed alternative models

• Collaborated with team to implement and test new model

• Monitored and adjusted model based on feedback and results
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Q1. How HashMap internally works in java ?
Ans. 
HashMap in Java is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
• HashMap uses hashing to store and retrieve key-value pairs.

• It uses an array of linked lists to handle collisions.

• The key's hash code is used to determine the index in the array where the key-value pair will be stored.

• If two keys have the same hash code, they are stored in the same linked list.

• HashMap allows o...read more
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Q2. How HashSet internally works in java ?
Ans. 
HashSet internally uses a HashMap to store elements as keys with a dummy value.
• HashSet uses a HashMap to store elements as keys with a dummy value

• It does not allow duplicate elements

• Elements are stored based on their hash code

• HashSet does not maintain insertion order
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Q1. What makes you a good candidate?
Ans. 
I am a good candidate because of my strong financial background, analytical skills, and ability to work well under pressure.
• Extensive experience in financial analysis and reporting

• Strong analytical skills to interpret data and make informed decisions

• Proven ability to work well under pressure and meet tight deadlines

• Excellent communication and interpersonal skills for building relationships with clients and colleagues
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Q1. What is IFRC and USGaap?
Ans. 
IFRC stands for International Financial Reporting Standards and USGaap stands for United States Generally Accepted Accounting Principles.
• IFRC is a set of accounting standards developed by the International Accounting Standards Board (IASB).

• USGaap is a set of accounting principles used in the United States for financial reporting.

• IFRC focuses on principles-based standards, while USGaap is more rules-based.

• IFRC is used i...read more
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Q1. Tell me about yourself
Ans. 
I am a dedicated IT Analyst with a strong background in troubleshooting, problem-solving, and project management.
• Experienced in analyzing complex technical issues and providing effective solutions

• Proficient in various programming languages such as Java, Python, and SQL

• Skilled in project management tools like Jira and Trello

• Strong communication skills and ability to work well in a team environment
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Q2. Can you keep working in 24*7 environment
Ans. 
Yes, I am comfortable working in a 24*7 environment and have experience doing so.
• I have previous experience working in a 24*7 environment and have successfully managed my work schedule.

• I am adaptable and can handle working during odd hours or on weekends if required.

• I understand the importance of being available round the clock in certain IT roles, especially for critical systems maintenance or support.

• I am willing to ...read more
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Q1. Can you describe a time when you identified a critical business problem through data analysis, and how you used analytics to influence a strategic decision within your organisation? What was the impact of ...read more
Ans. 
I identified a critical business problem through data analysis and used analytics to influence a strategic decision.
• Identified a decrease in customer retention rates through data analysis of customer feedback and purchase history

• Used predictive analytics to identify key factors contributing to customer churn, such as pricing changes and product availability

• Presented findings to senior management and recommended impleme...read more
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Q2. Can you explain how logistic regression handles binary classification, and how you would interpret the coefficients in the model? Additionally what metrics would you prioritise to evaluate the model?
Ans. 
Logistic regression is a statistical model used for binary classification, interpreting coefficients and evaluating metrics.
• Logistic regression is a statistical model that predicts the probability of a binary outcome based on one or more predictor variables.

• It uses the logistic function to map the input features to a probability between 0 and 1.

• The coefficients in the model represent the impact of each predictor variab...read more
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