Unisys Software Developer Interview Questions and Answers

Design and code a REST API for a software developer interview.

• Define the endpoints and HTTP methods for the API (e.g. GET /users, POST /users)

• Implement authentication and authorization mechanisms (e.g. JWT tokens)

• Use proper status codes for responses (e.g. 200 OK, 401 Unauthorized)

• Include error handling and validation for input data

• Document the API using tools like Swagger or OpenAPI

Calculate word frequency using Stream API and lambda expressions

• Use Stream API to convert array of strings to stream

• Use Collectors.groupingBy to group words by their frequency

• Use Collectors.counting to count the occurrences of each word

Software architecture refers to the high-level structures of a software system and the discipline of creating such structures.

• Software architecture defines the components, relationships, and interactions of a system.

• It involves making decisions about the organization of a system to meet specific requirements.

• Common architectural styles include client-server, layered, and microservices.

• Architectural patterns like MVC an...read more

Write SELECT query as per requirement

• Understand the requirement and identify the tables to be queried

• Select the columns to be retrieved

• Apply filters and sorting as per requirement

• Use joins if necessary

• Test the query for accuracy

ALV is a tool used to display data in tabular form in SAP systems.

• ALV stands for ABAP List Viewer

• It is used to display data in a tabular format

• It provides various features like sorting, filtering, grouping, etc.

• ALV can be used in both interactive and batch processing modes

Domain refers to a specific area of knowledge or expertise, while data element is a single piece of information within a domain.

• Domain is a broader concept that encompasses multiple data elements.

• Data element is a specific piece of information within a domain.

• For example, in the domain of medicine, 'patient name' and 'blood pressure' are data elements.

• While the domain itself is 'medicine' which includes various data el...read more

TMG stands for Threat Management Gateway. It is a network security tool used for web protection, firewall, and VPN.

• TMG provides protection against malware, viruses, and other online threats.

• It can be used as a firewall to control network traffic and prevent unauthorized access.

• TMG also offers VPN connectivity for remote access to the network.

• It is commonly used in enterprise environments for secure web access and netwo

I have been part of various stages of software development including requirements gathering, design, development, testing, and deployment.

• Participated in requirement gathering sessions with clients to understand their needs

• Contributed to the design phase by creating technical specifications and architecture diagrams

• Developed software using various programming languages and frameworks

• Performed unit testing and integrati...read more

Expectation is a belief or hope about something that is likely to happen in the future.

• Expectation is a mental state that involves anticipating a certain outcome or result.

• It can be based on past experiences, assumptions, or predictions.

• Expectations can be realistic or unrealistic, and can lead to disappointment or satisfaction depending on the outcome.

• For example, a student may have the expectation of getting an A on ...read more