Top 23 System Design Interview Questions and Answers
11/Nov/2021 | 5 minutes to read
design
Here is a List of essential System Design Interview Questions and Answers for Freshers and mid level of Experienced Professionals. All answers for these System Design questions are explained in a simple and easiest way. These basic, advanced and latest System Design questions will help you to clear your next Job interview.
System Design Interview Questions and Answers
These interview questions are targeted for System Design. You must know the answers of these frequently asked System Design interview questions to clear an interview. System Design is a very critical and important round of the interview process of highest paying companies like FAANG (Facebook, Apple, Amazon, Netflix, Google) and other companies such as Microsoft, Intuit, Atlassian and many more.
1. What is system design?
2. What do you understand about HLD and LLD?
3. Explain Load Balancer system design in detail.
You can put the load balancers at any layer as per requirement. For example, You can apply a load balancer between web layer and backend servers where load balancer distributes all backend server requests to multiple servers. If one of the backend servers is down then the load balancer will not send the request to this server.
There are some common algorithms to implement load balancing using software process as follows:
- Round Robin - forward each request to a different server based on rotation.
- Least Connection - forward the request to the node which has least connections.
- Least Response Time - forward the request to the node which responds to the request very fast before all.
- Least Bandwidth - send the request to the node which is serving the least packets in given time.
- Hashing methods - decisions are made based on the hash of various parts of incoming requests such as IP, URL, domain etc.
- Custom Load method - Decision is made based on the result of a custom method which gives the load information on a particular node.
Some General Interview Questions for System Design
1. How much will you rate yourself in System Design?
When you attend an interview, Interviewer may ask you to rate yourself in a specific Technology like System Design, So It's depend on your knowledge and work experience in System Design. The interviewer expects a realistic self-evaluation aligned with your qualifications.
2. What challenges did you face while working on System Design?
The challenges faced while working on System Design projects are highly dependent on one's specific work experience and the technology involved. You should explain any relevant challenges you encountered related to System Design during your previous projects.
3. What was your role in the last Project related to System Design?
This question is commonly asked in interviews to understand your specific responsibilities and the functionalities you implemented using System Design in your previous projects. Your answer should highlight your role, the tasks you were assigned, and the System Design features or techniques you utilized to accomplish those tasks.
4. How much experience do you have in System Design?
Here you can tell about your overall work experience on System Design.
5. Have you done any System Design Certification or Training?
Whether a candidate has completed any System Design certification or training is optional. While certifications and training are not essential requirements, they can be advantageous to have.
Conclusion
We have covered some frequently asked System Design Interview Questions and Answers to help you for your Interview. All these Essential System Design Interview Questions are targeted for mid level of experienced Professionals and freshers.
While attending any System Design Interview if you face any difficulty to answer any question please write to us at info@qfles.com. Our IT Expert team will find the best answer and will update on the portal. In case we find any new System Design questions, we will update the same here.