Software Designer

Software Designer Interview Questions and Answers

Updated 6 Nov 2024

Popular Companies

Q1. Write code to reverse string without using string or inbuilt function

Ans.

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

View 1 answer

Q2. Write function to find all possible combination of string of min word length 2.

Ans.

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.

Q3. to remove duplicate numbers without changing the original order

Ans.

Use a set to keep track of unique numbers while maintaining original order.

Iterate through the array and add each number to a set if it hasn't been encountered before.
Create a new array by iterating through the original array and only adding numbers that are not in the set.
Return the new array with duplicate numbers removed.

Q4. OSI Layers definition and functions

Ans.

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

Are these interview questions helpful?

Q5. Oops concepts? interface vs abstract?,

Ans.

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

View 1 answer

Q6. U-boot handoff to Linux kernel

Ans.

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

Share interview questions and help millions of jobseekers 🌟

Q7. Semaphore vs Mutex

Ans.

Semaphore is a signaling mechanism to control access to a shared resource, while Mutex is a locking mechanism to ensure only one thread accesses a resource at a time.

Semaphore can allow multiple threads to access a shared resource simultaneously, while Mutex ensures only one thread can access the resource at a time.
Mutex is more restrictive than Semaphore as it provides exclusive access to a resource, while Semaphore can be used to control access to a pool of resources.
Exampl...read more