Software Designer Interview Questions and Answers

Code to reverse string without using string or inbuilt function

• Create an array of characters from the given string

• Swap the first and last characters, then second and second last, and so on until the middle of the array

• Convert the array back to a string

I approach complex software design by understanding requirements, breaking down tasks, and iterating through feedback.

• 1. Gather Requirements: Conduct interviews with stakeholders to understand their needs. For example, in a healthcare app, discuss with doctors and patients.

• 2. Define Scope: Clearly outline what the project will and won't include to avoid scope creep. For instance, specify features for a patient management system.

• 3. Create Architecture: Design a high-level arch...read more

Function to generate all possible combinations of a string with a minimum word length of 2.

• Use recursion to generate all possible combinations.

• Start with a single character and add one character at a time to generate all possible combinations.

• Store the generated combinations in an array of strings.

Yes, I have worked with various industries, including finance and e-commerce, enhancing my design skills across different domains.

• Collaborated with a fintech startup to design a user-friendly mobile banking app, improving user engagement by 30%.

• Worked with an e-commerce platform to revamp their checkout process, resulting in a 25% increase in conversion rates.

• Participated in a healthcare project, designing an appointment scheduling system that streamlined patient management.

OSI Layers are a model for network communication that defines the functions of each layer.

• OSI Layers are a 7-layer model for network communication.

• Each layer has a specific function and communicates with the layers above and below it.

• The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Examples of functions include: Physical layer handles the transmission of raw data, Transport layer ensures reliable data transfer, and Application la...read more

Interface and abstract are both OOP concepts. Interface defines a contract, abstract class provides partial implementation.

• Interface is a blueprint for classes to implement, while abstract class is a class that cannot be instantiated but can be subclassed.

• Interface can have only method signatures, while abstract class can have both method signatures and concrete methods.

• A class can implement multiple interfaces, but can only inherit from one abstract class.

• Interfaces are used...read more

U-boot hands off control to Linux kernel during boot process.

• U-boot loads Linux kernel image into memory

• U-boot sets up necessary parameters for Linux kernel

• U-boot passes control to Linux kernel by jumping to its entry point

• Linux kernel takes over and initializes system hardware