Alstom Transportation Senior Software Engineer Interview Questions and Answers

SDLC stands for Software Development Life Cycle, which is a process used by software development teams to design, develop, and test high-quality software.

• SDLC consists of several phases including planning, analysis, design, implementation, testing, and maintenance.

• Each phase has its own set of activities and deliverables to ensure the software meets the requirements and quality standards.

• Examples of SDLC models include...read more

CAN protocol is a communication standard used in automotive and industrial applications.

• CAN protocol stands for Controller Area Network

• It is a message-based protocol used for communication between electronic control units (ECUs)

• CAN protocol allows for high-speed communication and real-time data transmission

• It is commonly used in automotive applications for functions such as engine control, transmission control, and bod...read more

Arbitration in CAN is a process of resolving conflicts when multiple nodes try to transmit data simultaneously.

• Arbitration is used in Controller Area Network (CAN) to ensure that only one node transmits data at a time.

• Each node on the CAN bus has a unique identifier, and the node with the highest priority identifier gets to transmit its data first.

• If two or more nodes try to transmit data at the same time, the arbitrat...read more

Microservices are modular and scalable, while monolithic is simpler but less flexible.

• Microservices allow for independent deployment and scaling of individual components

• Monolithic architecture is easier to develop and test, but can become unwieldy as the application grows

• Microservices can be more fault-tolerant and resilient to failures

• Monolithic architecture can be more efficient for small applications with limited fu...read more

Microservices are small, independent services that communicate with each other, while monolithic is a single, self-contained application.

• Microservices are loosely coupled and can be developed and deployed independently.

• Monolithic applications are tightly coupled and require a full deployment for any changes.

• Microservices allow for better scalability and fault tolerance.

• Monolithic applications can be simpler to develop ...read more

Zero one knapsack problem is a classic optimization problem in computer science.

• It involves selecting a subset of items with maximum value, subject to a weight constraint.

• It is a NP-hard problem and can be solved using dynamic programming.

• Examples include packing a backpack with limited weight capacity or selecting stocks for a portfolio with limited investment budget.

Indexing a dictionary for faster search

• Use hash tables for constant time lookup

• Consider using a trie for prefix search

• Sort the keys for binary search

• Use a balanced tree for range queries