Fidelity International Programmer Analyst Interview Questions, Process, and Tips

Some easy mcq coding questions

Q1. 1. What is serialization? 2. What is a Singleton class? 3. Difference b/w interface and abstract class. And a few more basic java 8 questions.
Ans. 
Serialization is the process of converting an object into a stream of bytes to store or transmit data.
• Serialization is used to save the state of an object and recreate it when needed.

• In Java, serialization is achieved by implementing the Serializable interface.

• Example: ObjectOutputStream and ObjectInputStream classes are used for serialization in Java.
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Q1. Some basic HR questions like how do you manage pressure at work, Willing to relocate or not, etc.
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Q1. Basic details of yourself
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Q2. Salary negotiations and being loyalist
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Q3. Discussion about previous company
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Q1. What is Normalization?
Ans. 
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.
• Normalization involves breaking down data into smaller, more manageable tables

• It helps in reducing data redundancy by eliminating duplicate data

• Normalization improves data integrity by ensuring that each piece of data is stored in only one place

• There are different levels of normalization, such as First Normal F...read more
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Q2. What is sub-Query
Ans. 
A sub-query is a query nested within another query in SQL to retrieve data from multiple tables.
• Used to retrieve data from multiple tables

• Can be used in SELECT, INSERT, UPDATE, or DELETE statements

• Must be enclosed in parentheses
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Q3. What is joins ?explain
Ans. 
Joins are used in databases to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column.

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right ta...read more
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Q4. What is Left outer join ?give ex
Ans. 
Left outer join is a type of join operation that returns all records from the left table and the matched records from the right table.
• Left outer join combines rows from two tables based on a related column between them.

• It includes all the rows from the left table, even if there are no matches in the right table.

• Example: SELECT * FROM table1 LEFT JOIN table2 ON table1.id = table2.id;
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Q5. What is constraint?
Ans. 
A constraint is a rule or limitation that must be followed in a system or process.
• Constraints restrict the actions or behaviors of users or systems.

• Constraints can be related to data validation, business rules, or system limitations.

• Examples of constraints include password length requirements, maximum file size limits, and budget constraints.
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Hackerrank. There were 2 questions.

Q1. Explain DI and IoC in Spring boot
Ans. 
DI and IoC are design patterns used in Spring Boot to achieve loose coupling and improve testability.
• DI (Dependency Injection) is a design pattern where the dependencies of a class are injected from the outside rather than created within the class itself.

• IoC (Inversion of Control) is a design principle where the control of object creation and lifecycle is inverted from the class to an external entity.

• Spring Boot uses D...read more
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Q2. Explain exceptions.
Ans. 
Exceptions are unexpected events that occur during the execution of a program, disrupting the normal flow of the program.
• Exceptions are used to handle errors and other exceptional conditions in a program.

• They allow the program to respond to unexpected situations and prevent the program from crashing.

• Examples of exceptions include division by zero, file not found, and out-of-memory errors.
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Q1. What is your aim after 5 years
Ans. 
My aim after 5 years is to become a senior programmer analyst leading a team of developers and contributing to innovative projects.
• Advance to a senior programmer analyst role

• Lead a team of developers

• Contribute to innovative projects

• Continuously improve my technical skills and knowledge
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