BT Group Senior Software Specialist Interview Questions and Answers

Q1. .net core,mvc ,sql,angular
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Q2. .net Mcc page lifecycle
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Q1. Manager hypothetical question
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Q1. Cloud question aws cicd pipeline
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Q1. Introduce yourself
Ans. 
I am a Senior Software Engineer with 8 years of experience in developing web applications using Java, Spring, and Angular.
• 8 years of experience in software development

• Proficient in Java, Spring, and Angular

• Strong problem-solving skills

• Experience in leading development teams

• Passionate about learning new technologies
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Q2. Build a digital stopwatch with HTML, CSS, JS
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Build a digital stopwatch using HTML, CSS, and JS
• Create HTML structure with buttons for start, stop, and reset

• Use CSS to style the stopwatch display

• Implement JS logic to start, stop, and reset the stopwatch
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Q3. What is your day to day work life looks like?
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As a Senior Software Engineer, my day-to-day work involves designing and developing software solutions, collaborating with team members, troubleshooting issues, and staying updated on industry trends.
• Designing and developing software solutions based on project requirements

• Collaborating with team members to discuss project progress and brainstorm solutions

• Troubleshooting and debugging code to fix issues and improve perf...read more
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Q4. Horizontal vs vertical scaling
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Horizontal scaling involves adding more machines to distribute load, while vertical scaling involves increasing the power of existing machines.
• Horizontal scaling adds more machines to handle increased load

• Vertical scaling increases the power of existing machines

• Horizontal scaling is more cost-effective and easier to implement

• Vertical scaling may have limitations in terms of hardware capabilities

• Examples: Horizontal sca...read more
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Q5. Load balancer vs API gateway
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Load balancer distributes incoming network traffic across multiple servers, while API gateway manages API traffic.
• Load balancer operates at the network layer, distributing traffic based on algorithms like round-robin or least connections.

• API gateway operates at the application layer, providing features like authentication, rate limiting, and caching for APIs.

• Load balancer can balance traffic for any type of application...read more
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Q6. There is a scenario where user wants to upload multiple files at once but provided API can on accept one file at a time, how tackle this scenario gracefully?
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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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Test was for Web Development - React
75min test
3 Questions
1 Coding Question
2 Scenario based questions

Q1. React Optimization techniques
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Q2. React Advantages
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Q1. How to debug in production environment?
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Q1. Challenges faced during work and how you overcome?
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Q1. Why you choose Wells fargo over other offers?
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Q1. What is polymorphism?
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Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance allows a child class to override a method from its parent class, exhibiting polymorphic b
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Q2. How abstraction is implemented?
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Abstraction is implemented in software engineering by hiding unnecessary details and exposing only relevant information.
• Abstraction is achieved through the use of abstract classes and interfaces in object-oriented programming.

• It allows developers to focus on the essential aspects of a concept without getting bogged down in implementation details.

• For example, in a car simulation program, the Car class may have abstract ...read more
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Q3. What is the difference between abstraction and Interface?
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Abstraction is hiding the implementation details while Interface is a contract that defines the methods that a class must implement.
• Abstraction focuses on hiding the internal implementation details of a class, allowing the user to only see the necessary details.

• Interface defines a contract that specifies the methods a class must implement, without providing the implementation details.

• Abstraction can be achieved through...read more
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Q1. What is your motivation when you are working on same project alone for long period?
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My motivation when working on a project alone for a long period is the satisfaction of seeing my hard work come to fruition.
• Setting small achievable goals to keep myself motivated

• Taking breaks to avoid burnout and maintain productivity

• Seeking feedback from others to stay motivated and improve my work

• Reminding myself of the end goal and the impact my project will have
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Q1. What is your salary expectation?
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My salary expectation is based on my experience, skills, and the market rate for Software Engineers in this region.
• Research the average salary range for Software Engineers in the specific region or industry

• Consider your level of experience, skills, and qualifications when determining your salary expectation

• Be prepared to negotiate based on the company's offer and benefits package
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Q1. C questions on oops concepts
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Q2. Python and ml questions
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Q1. Salary discussion
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Fibonacci series and program to find the max number in list

Q1. What is oops and explain each of the terms
Ans. 
OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.
• OOPs consists of four main principles: Inheritance, Encapsulation, Abstraction, and Polymorphism.

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

• Encapsulation refers to the bundling of data and methods that operate on the data into a single unit.

• Abstraction focuses on hiding the int...read more
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Q2. What is list, dictionary, set and tuple and difference between them
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List, dictionary, set, and tuple are data structures in Python with different characteristics and use cases.
• List: ordered collection of items, mutable (can be changed), represented by square brackets []

• Dictionary: unordered collection of key-value pairs, mutable, represented by curly braces {}

• Set: unordered collection of unique items, mutable, represented by curly braces {}

• Tuple: ordered collection of items, immutable ...read more
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Q1. Find nth elements from last in linked list
Ans. 
Use two pointers to find the nth element from the end of a linked list.
• Use two pointers, one moving n steps ahead of the other

• When the first pointer reaches the end, the second pointer will be at the nth element from the end
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Q2. Difference between hashmap and concurrent hashmap
Ans. 
HashMap is not thread-safe while ConcurrentHashMap is thread-safe and allows concurrent access.
• HashMap is not thread-safe and can lead to ConcurrentModificationException if accessed by multiple threads simultaneously.

• ConcurrentHashMap allows concurrent access by multiple threads without the need for external synchronization.

• ConcurrentHashMap achieves thread-safety by dividing the map into segments, allowing multiple th...read more
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