Palo Alto Networks Software Engineer Mock Interview

Practice 30 Palo Alto Networks Software Engineer questions covering cybersecurity systems, distributed architecture, and coding challenges.

Question 22 of 30

What are the differences between blocking and non-blocking calls in the context of Node.js?

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William Swansen

William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.

During an interview as a software engineer, you can anticipate that most questions will be technical or operational. The best way to prepare for this type of interview is to research the company to understand their programming and the products they produce. Next, you should carefully review the processes you use as a software engineer to develop programs. Having a clear understanding of these will help you respond to any question the interviewer may ask.

William Swansen

"Blocking calls require that the program waits until a non-JavaScript operation is completed before additional JavaScript commands can be executed. Non-blocking calls can execute commands asynchronously at any time. This characteristic results in non-blocking calls having a performance advantage. Node.js uses both of these types of calls."

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30Palo Alto Networks, Inc. Interview Questions & Answers

Software Engineer

1.Palo Alto Networks is very proud of our products and the people who develop them. In your opinion, what distinguishes a great software engineer from an average one?

Software Engineer

2.Here at Palo Alto Networks, we value work life balance and initiative. What personal software development projects have you worked on outside of work?

Software Engineer

3.If hired by Palo Alto Networks, can you estimate what portion of your day will involve coding and other activities you will perform when not coding?

Software Engineer

4.Walk me through your process for designing scalable applications.

Software Engineer

5.Describe the process you use to create a program, from requirements definition to delivery.

Software Engineer

6.How do you go about addressing errors in your code?

Software Engineer

7.What process do you use to test and find bugs in an application you've developed?

Software Engineer

8.How would you implement Dijkstra's Shortest Path using a programming language with which you are familiar?

Software Engineer

9.Many Palo Alto Networks Software Engineers prefer to program in Java. Can you describe how you would implement linear search in JavaScript?

Software Engineer

10.How do you go about organizing CSS files, and why do you prefer this approach?

Software Engineer

11.Walk me through the steps to build a single page application with multiple sections using the programming framework in which you typically work.

Software Engineer

12.Which do you prefer - a micro-service approach or a monolithic app?

Software Engineer

13.How would you accelerate the response time of a website you created for us here at Palo Alto Networks ?

Software Engineer

14.Can you describe a tough software development problem you encountered in your last job and discuss how you solved it?

Software Engineer

15.What do you look for or check when reviewing another team member's code?

Software Engineer

16.What do you feel are the critical principles of good software engineering?

Software Engineer

17.Can you describe Palo Alto Networks' software development life cycle as you understand it?

Software Engineer

18.Here at Palo Alto Networks , we have embraced Agile methodology. How experienced are you with the Agile software development process?

Software Engineer

19.Please describe responsive design and the difference between fixed and fluid layouts.

Software Engineer

20.What are the differences between an array and a stack?

Software Engineer

21.Please describe a stack and the two operations it performs.

Software Engineer

22.What are the differences between blocking and non-blocking calls in the context of Node.js?

Software Engineer

23.Palo Alto Networks web developers are incorporating HTML5 in their most recent websites. Can you describe the functions of web workers in HTML5?

Software Engineer

24.Can you define black box testing and white box testing and discuss the differences between them?

Software Engineer

25.How would you go about explaining Palo Alto Networks' cloud computing environment to someone who doesn't have a technical background?

Software Engineer

26.What are some of the programming languages you are familiar with, and which ones do you prefer?

Software Engineer

27.In your opinion, what is the difference between computer software and a computer program?

Software Engineer

28.The software development team here at Palo Alto Networks uses design patterns. Which design patterns do you use, and in what situations do you use them?

Software Engineer

29.Can you describe what you know about object-oriented programming?

Software Engineer

30.Many of the projects we develop here at Palo Alto Networks start small, but grow quickly. What methodologies do you use to ensure that your program will scale?