BT Group Senior Software Engineer Interview Questions and Answers

The biggest challenge in developing Azure solution was managing the complexity of the cloud environment.

• Managing the complexity of the cloud environment

• Ensuring scalability and reliability

• Integrating with existing systems

• Securing the solution

• Optimizing cost

• Example: Migrating a legacy application to Azure

Implementing tumbling window in Azure Data Factory without using the feature

• Create a pipeline with a trigger that runs at the desired interval

• Use a lookup activity to retrieve the data for the current window

• Use a foreach activity to iterate over the retrieved data

• Perform the required operations on the data within the foreach activity

• Write the output to the desired destination

My suggestion for implementation in Azure Data Factory v2 is to use the Mapping Data Flow feature.

• Utilize Mapping Data Flow for complex data transformations

• Take advantage of the visual interface to design and debug data flows

• Leverage the built-in data integration capabilities with other Azure services

• Use data flow parameters and expressions for dynamic transformations

• Monitor and optimize data flow performance using dat

C++ is a high-level programming language used for developing system software, application software, device drivers, and video games.

• C++ is an extension of the C programming language.

• It supports object-oriented programming concepts like classes, inheritance, polymorphism, and encapsulation.

• C++ is used in developing operating systems, browsers, databases, and other software applications.

• It is known for its performance an...read more

A data structure that stores a sequence of elements in a linear order.

• Consists of nodes that contain data and a pointer to the next node.

• Can be singly linked or doubly linked.

• Used for implementing stacks, queues, and hash tables.

• Example: Singly linked list - 1 -> 2 -> 3 -> null

• Example: Doubly linked list - null <- 1 <-> 2 <-> 3 -> null

VLAN works under the principle of network segmentation.

• VLAN separates a physical network into multiple logical networks.

• It improves network performance, security, and management.

• VLAN tags packets with a unique identifier to identify the network they belong to.

• Example: VLAN can be used to separate guest and employee networks in a company.

The question asks about the candidate's current and expected salary.

• Be honest and transparent about your current salary.

• Research the market rates for your role and level of experience to determine a reasonable expected salary.

• Consider other benefits and perks besides the base salary.

• Avoid discussing salary expectations too early in the interview process.

• Focus on the value you can bring to the company rather than just t

To make a hotel booking app in ReactJS

• Create a form to input booking details

• Use a calendar component to select dates

• Display available rooms and prices

• Implement payment gateway

• Include user authentication and booking history