Bank of America Interview Questions, Process, and Tips

Trapping rain water and median of two sorted array

Q1. Oops and dbms questions?
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Q2. Code question in Array and string?
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Q1. Tell me about yourself
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Q1. Concepts of class, polymorphism, what are decorators, concepts of inheritance.
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Q2. Difference between bagging and boosting
Ans. 
Bagging and boosting are ensemble learning techniques used in machine learning to improve the performance of models by combining multiple weak learners.
• Bagging (Bootstrap Aggregating) involves training multiple models independently on different subsets of the training data and then combining their predictions through averaging or voting.

• Boosting involves training multiple models sequentially, where each subsequent mode...read more
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Q3. Python coding question to find the employee with second largest income
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Python code to find the employee with second largest income in a list of employees
• Sort the list of employees by income in descending order

• Return the employee at index 1 in the sorted list
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Q4. Detect the unique characters in the substring and their length
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The candidate needs to identify unique characters in a given substring and calculate their length.
• Iterate through the substring and store each character in a set to keep track of unique characters

• Calculate the length of the set to determine the number of unique characters

• Return the set of unique characters and their length as an array of strings
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Q5. Concepts of mutable and immutable in python.
Ans. 
In Python, mutable objects can be changed after creation, while immutable objects cannot be changed.
• Mutable objects: lists, dictionaries, sets

• Immutable objects: strings, tuples, numbers

• Example: x = [1, 2, 3] (mutable), y = 'hello' (immutable)
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Array linkedlist and also value assesment also included

Q1. Oops questions abstraction inheritrance
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Q2. Dbms joins left join right join
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Q1. Describe your self
Ans. 
I am a dedicated and experienced technical manager with a strong background in leading teams and implementing innovative solutions.
• Experienced in leading technical teams to successful project completion

• Skilled in implementing innovative solutions to improve efficiency

• Strong background in technical knowledge and problem-solving

• Excellent communication and leadership skills

• Passionate about continuous learning and professi
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Q2. Why do you want to join BOFA
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I want to join BOFA because of its reputation for innovation and commitment to excellence in the technical field.
• BOFA has a strong reputation for innovation and cutting-edge technology

• I am impressed by BOFA's commitment to excellence in the technical field

• I believe that joining BOFA will provide me with opportunities for professional growth and development
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Q1. Scenario based questions
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Q2. Scenario based questions based on experience
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Q1. Behavioral questions
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Q2. Behavioral questions based on real time experiences
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Q1. Difference between Entity Framework and ADO.Net
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Entity Framework is an ORM that simplifies data access in .NET applications, while ADO.Net is a low-level data access technology.
• Entity Framework is an Object-Relational Mapping (ORM) framework that allows developers to work with databases using .NET objects.

• ADO.Net is a set of classes that allows developers to interact with data sources like databases directly using SQL commands.

• Entity Framework provides higher level ...read more
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Q2. Explain Angular hooks or lifecycle
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Angular hooks or lifecycle are methods that allow developers to tap into key moments in a component's lifecycle.
• Angular components have several lifecycle hooks such as ngOnInit, ngOnChanges, ngDoCheck, ngOnDestroy, etc.

• These hooks allow developers to perform actions at specific points in a component's lifecycle, such as initialization, change detection, and destruction.

• For example, ngOnInit is used to initialize data i...read more
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Q3. Difference between function and stored procedure in SQL
Ans. 
Functions return a single value while stored procedures can perform multiple operations and return multiple values.
• Functions return a single value while stored procedures can return multiple values.

• Functions are used for computations and return values, while stored procedures are used for executing a sequence of statements.

• Functions can be called from within SQL statements, while stored procedures are called using the ...read more
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Q4. Your professional experience
Ans. 
I have over 8 years of experience as a Senior .NET Developer, working on various projects and technologies.
• Developed web applications using ASP.NET MVC and Web API

• Worked with SQL Server for database design and development

• Implemented front-end using JavaScript frameworks like Angular and React

• Experience with cloud platforms like Azure for deployment and hosting
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Q5. Projects architecture you have worked on?
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I have worked on projects with layered architecture, microservices, and monolithic architecture.
• Layered architecture: Separation of concerns into presentation, business logic, and data access layers.

• Microservices: Independent, loosely coupled services communicating over APIs.

• Monolithic architecture: Single-tiered application with all components tightly integrated.

• Example: Developed a web application using ASP.NET MVC w...read more
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Dsa and basic hirevue questions

Q1. Project based questions, Rest api , why Node js , why NOSQL
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Q1. Tell me about yourself basic situation based
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Q2. SDLC , waterfall ,
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Hirevue interview test consisted of 5 qns

Q1. Explain your project
Ans. 
Developed a test automation framework for a web application using Selenium and Java
• Used Selenium WebDriver for automated testing

• Implemented test scripts in Java programming language

• Executed tests on different browsers and platforms

• Generated test reports using TestNG framework
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Q2. Sql joins and finding second highest salary
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Using SQL joins to find the second highest salary in a table.
• Use a self join to compare each row with every other row in the table.

• Order the results by salary in descending order and use LIMIT to get the second highest salary.
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Q1. Where do you see yourself in 5 years
Ans. 
In 5 years, I see myself as a senior software test engineer leading a team and working on cutting-edge technologies.
• Advancing to a senior role within the company

• Leading a team of software test engineers

• Working on innovative technologies like AI and automation

• Continuing to enhance my skills through training and certifications
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