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Tenable Network Security Interview
Questions

27 Questions and Answers by Ryan Brunner

Published December 19th, 2019 | Ryan has over 10 years of experience interviewing
candidates in the healthcare, public service, and private manufacturing/distribution industries.
Question 1 of 27
At Tenable Network Security, we rely on a full team effort to deliver top quality products to our customers. Tell me about a time that you worked well as part of a team. Are you comfortable in a similar role here?
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How to Answer
While this potential role with Tenable Network Security will require your to be an independent worker that can think on your feet, you will also need to work as part of a larger team that is working toward one common goal. Because of this fact, your interviewer will want to hear that you thrive in an environment where you work with team members from other disciplines than you are trained in. In your example, stress to your interviewer that you have excellent communication skills and that you fully understand that every person on a team plays a vital role in the organization's success.
27 Tenable Network Security Interview Questions
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  1. At Tenable Network Security, we rely on a full team effort to deliver top quality products to our customers. Tell me about a time that you worked well as part of a team. Are you comfortable in a similar role here?
  2. What is one unique personality trait you possess that would help you be successful in this role with Tenable Network Security?
  3. What unique values can you bring to Tenable Network Security in your user experience design skills?
  4. In Java, why shouldn't you use strings to store a password?
  5. Talk about your previous user interface design experience in detail. Why do you feel that this experience will translate well to this role with Tenable Network Security?
  6. What SDLC models are you familiar in working with?
  7. Do you consider yourself stronger in C++, C#, Java, or Python?
  8. As you reflect back on your career to this point in your search for a new position, what would you say is your ideal work environment or culture?
  9. What do you know about our products and how do you think you'll be able to handle a support role surrounding them?
  10. If you were asked to review a colleague's code that they had written, what key things would you look for?
  11. What experience do you have in the different types of software maintenance?
  12. In your current work, what are the important steps you take in the data validation process?
  13. How do you stay organized and on track when working on multiple projects or duties at the same time?
  14. What do you feel is one of the top issues that is faced by data engineers today?
  15. Tell me about your problem-solving skills. Do you enjoy analyzing and solving complex problems?
  16. Give an example of a time that you used a universal design practice in your work as a UI or UX designer. Why was it important to do this?
  17. I would like to have a full understanding of your experience and portfolio. What types of industries have your previous projects been involved in?
  18. What do you feel are the primary features and benefits of the Java programming language?
  19. If hired for this position at Tenable Network Security, what leadership skills would you bring to our team?
  20. What would you consider your technical specialty?
  21. As a machine learning engineer, how do you avoid the curse of dimensionality in your designs?
  22. How would you handle a situation where a colleague was being very difficult to work with?
  23. If you were confronted with a time where you wouldn't be able to meet a deadline here at Tenable Network Security, what steps would you take when you made that realization?
  24. We consider research to be the backbone of what we do at Tenable Network Security. Do you think it's important to conduct research before beginning a project or would you rather jump right in?
  25. In a technical support role here at Tenable Network Security, we expect that you would be able to bring great customer service skills to the role. Describe your customer service philosophy in the support that you would provide.
  26. In SQL, how do you explain the differences between clustered and non-clustered indexes? Can you name a time that you used each?
  27. What software analysis and design tools do you have familiarity working with?
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15 Tenable Network Security, Inc. Answer Examples
1.
At Tenable Network Security, we rely on a full team effort to deliver top quality products to our customers. Tell me about a time that you worked well as part of a team. Are you comfortable in a similar role here?
While this potential role with Tenable Network Security will require your to be an independent worker that can think on your feet, you will also need to work as part of a larger team that is working toward one common goal. Because of this fact, your interviewer will want to hear that you thrive in an environment where you work with team members from other disciplines than you are trained in. In your example, stress to your interviewer that you have excellent communication skills and that you fully understand that every person on a team plays a vital role in the organization's success.

Ryan's Answer #1
"Throughout my career, I've always enjoyed working as part of a larger team on the job and this personal enjoyment started with my love of and participation in team sports like baseball and basketball. Growing up playing sports, I learned that each team member brought a unique skill set that could help us achieve our goals. Through a great coaching staff that knew how to make these individual skills shine, this same philosophy holds true for a team that is looking to design a new software system. I know that my skills as an engineer are just part of the final product and I work very well with designers, architects, analysts and sales to help build the greatest system possible."
Ryan's Answer #2
"I am a people person by nature and my current role has me working very closely with our engineering and design staff on writing technical manuals for our products. While I certainly can handle long days at my computer in solitude, my desire to work hand in hand with others really sets me apart from my peers in this field. I have excellent verbal, listening and written communication skills that, if hired here at Tenable Network Security, your entire team would appreciate from my first day on the job."
2.
What is one unique personality trait you possess that would help you be successful in this role with Tenable Network Security?
This question is allowing you to have the floor during your interview to wow your interviewer with something they might not know about you yet from your resume or time so far during the interview. Think about a strong, unique trait that you have that has led to prior success in your field and explain in detail how this will help further you in your career with Tenable Network Security. If possible, be very unique in your answer to draw a direct line between your personality and success in this role.

Ryan's Answer #1
"From what my parents have told me about me as a young child, passion has been a personality trait that has driven me my whole life. When I tackle something in life, I need to be passionate about it for it to be a success. From my time as a young child up to today, I have been passionate about physical fitness and this has driven me to participate in running and biking races across the country. This same passion in the pursuit of excellence has translated into my career as a software engineer. From tinkering with computer hardware at a young age and learning the internal components of a system to learning how to create and design software, you'll quickly find that my passion to engineer the most unique software here at Tenable Network Security will be extremely beneficial to your team."
Ryan's Answer #2
"I would have to say that my humility has been instrumental in getting me to where I am at today in my career. Having worked with one of the largest software companies in the world, egos were certainly high with a lot of my teammates and I have always used my humility to let my work do my talking for me while remaining a friendly and curious colleague to all."
3.
What unique values can you bring to Tenable Network Security in your user experience design skills?
While your interviewer has shown confidence in your technical abilities to succeed at Tenable Network Security as a UX designer, this question is helping them gain insight into your ability to see the big picture in the work that you do. As you think about the unique personal values that you would bring to the role, try and paint a picture of your work tying to the end user and how you can help make it more productive, enjoyable and satisfying for them.

Ryan's Answer #1
"I have really taken pride in my ability to add value to the business needs of the customers that I work with. During any design project, I take the time to work with end users to find their wants and needs out of the program. Then, as I create the UX design, I keep their needs at the forefront and do anything possible to exceed their expectations."
Ryan's Answer #2
"As you can see from my resume, I have formal training and experience in user experience research and I know that this would benefit the work that I would be doing here at Tenable Network Security if hired for this position. I pursued this additional training in my career because of my passion for the customer journey in the programs that I design."
4.
In Java, why shouldn't you use strings to store a password?
While this may seem like a rudimentary question regarding your knowledge of Java, your interviewer is looking to ideally hear that you understand the principle differences between string and character arrays. Asking about the storage of passwords within a system gives you the opportunity here to point out the differences between the two. In the end, while explaining the differences, be sure to tie it back to the original question on why strings shouldn't be used to store passwords.

Ryan's Answer #1
"To store a password, character array is the obvious best choice because character arrays are mutable. If a string was utilized to store passwords, a definite security risk would be present to anyone that would have access to the memory dump from the system."
Ryan's Answer #2
"This question simply boils down to a string being immutable. Because strings are a sequence of characters represented as a single data type, the system requires garbage creation to fully get rid of it out of memory. In my time designing software, I have used Char array and its mutable features to store passwords for the security of our end users "
5.
Talk about your previous user interface design experience in detail. Why do you feel that this experience will translate well to this role with Tenable Network Security?
While your interviewer can get a good sense of your experience from your resume, they are looking for you to talk in details about your experiences in UI design in your previous work. While explaining your previous experience, be sure to highlight the skills that you developed that will help you be successful in designing new products with Tenable Network Security. Prior to your interview, be sure you research and are family with the products that Tenable Network Security puts out.

Ryan's Answer #1
"Ten years into my career out of college, I consider myself very blessed to have such a well rounded background in user interface design. I have experience designing cutting edge mobile app designs, website design, video game design and software design. Here at Tenable Network Security, your education software would greatly benefit from my creative designs to be user friendly and appealing to educators, parents and students and I'd love to bring these skills to work for you."
Ryan's Answer #2
"While my experience in user interface design has really focused on web design over the past five years, I think my current skill set will benefit the team here at Tenable Network Security greatly. In my web design, I prepare mockups and wireframes for customers and have experience utilizing a lot of different resources in doing these. In the software world, I would love to use these same principles. As well, my web experience has really driven me to be user focused. In this role, a more user focused drive is required out of your user interface design and I would be able to bring that to the team here."
6.
What SDLC models are you familiar in working with?
As a software engineer, you are very familiar with the software development life cycle. For this question, your interviewer is looking to hear what models you have worked on in the past. While there isn't necessarily a right or wrong answer to this question, try to show your flexibility to working with different SDLC models by bringing up your past experiences. Then, show you have knowledge of different models like the waterfall model or agile model. It is also a good idea to use this question as an opportunity for you to learn more about Tenable Network Security by asking your interviewer which model they work off of.

Ryan's Answer #1
"During my training in software engineering and in my early career, the waterfall model was the standard. In this model, each phase of the development process happens in a set order and projects using this model are easily managed. But over time, as the development projects that I have led have become more complicated and intricate, I have implemented the spiral model. This model has allowed the ability of end users to give feedback early on and often during development and helps to build a more customized product to our customers."
Ryan's Answer #2
"In my current position with XYZ Company, my department utilizes the agile model in development life cycle. Since our products are so tailored to the needs of our customers, we get a working product very early on in the process and then I work hand in hand with customers to fine tune the software moving forward. It is a very effective model that has built a great reputation for our software among customers. I also have familiarity working with the iterative model and it has similar advantages to the agile model. If I were hired here at Tenable Network Security, can you expand on what models you use here in your software development life cycle?"
7.
Do you consider yourself stronger in C++, C#, Java, or Python?
Before your interview, do some research to understand what tech stack Tenable Network Security uses so you can best prepare and highlight your expertise. If you aren't as strong in one of the skills you feel is necessary, be sure to explain how you've used it and how you are growing your knowledge to become better. Be sure to be honest in your answer, as the company will likely test your strengths.

Ryan's Answer #1
"In my last company, we had a bit of an outdated tech stack and used C# and .NET. I found myself fully immersed in those technologies, but had a strong desire to learn more and become more familiar with modern technologies and how I can apply that in my career. That's what has me so interested in this role. Over the last year, I've taken courses in Java and C++, which I noticed you prefer. I've become proficient in the skills and in side projects, applied my increasingly strong knowledge. I'm probably strongest professionally in C# as that has been where my experience lies, but my passion and dedication is on the Java and C++ side, as I feel that's the more modern alternative. I'm excited about the possibility of applying that knowledge in a role at Tenable Network Security."
Ryan's Answer #2
"I am motivated and excited about this new opportunity because it will challenge me to grow in my (X) skills. I love soccer and enjoy spending time with my teammates. I am interested in continuing my education by studying (Y) to further my career."
8.
As you reflect back on your career to this point in your search for a new position, what would you say is your ideal work environment or culture?
While using this question as a key indicator on how you'll fit with the team and the organization at Tenable Network Security, it will be very important for you to research as much as you can on the work environment at Tenable Network Security so you can match your priorities to that environment. If you have the opportunity to speak with an employee at Tenable Network Security prior to your interview, that can shed valuable information. In the end, the culture and value of an organization are often a key indicator of long-term success in a job, so make sure that you reflect your values into what the company values.

Ryan's Answer #1
"As I begin this job search now 15 years out of college, I'm looking for an employer that promotes and encourages innovation, new ideas and collaboration among all members of the team. From what I know about Tenable Network Security from speaking with others, you sound like a perfect match for what I am looking for in a career."
Ryan's Answer #2
"With all of the companies that I have both worked for and consulted with in the past, I realize that a company culture is basically the personality of the company and I am looking for a new organization that really meshes well with my personality. I am a casual person that believes in hard work, teamwork and having fun on the job. As I embarked on a job search, I was so happy to see that Tenable Network Security was hiring because I believe our styles will fit perfectly together."
9.
What do you know about our products and how do you think you'll be able to handle a support role surrounding them?
This question allows your interviewer to gain insight into both your interest in this position and the skills that you will be able to bring to the table. To show your interest, be sure to do as much research on Tenable Network Security as possible and get to know their products. Ensuring that you know the job description from front to back is important as well. Then, talk about how you feel that your skills will apply to working with end users that are contacting about the software.

Ryan's Answer #1
"One of the main things that is attracting me to a position with Tenable Network Security will be the new opportunity to work solely with cloud based software. With my current experience in supporting server and data storage issues, I am confident in my ability to support the services here based on that experience."
Ryan's Answer #2
"Upon reading the job description for technical application support, it was easy for me to see that my skills were a perfect match for the position. It sounds like you are looking for an expert that can provide support on GlobalLink applications and has exceptional experience across many different scripting languages. As you can see from my resume, I have experience using Perl and Python and I feel like these experiences would help make a smooth transition for me into this role. On top of that, my cloud based experience would translate nicely to this role here at Tenable Network Security as well."
10.
If you were asked to review a colleague's code that they had written, what key things would you look for?
For this question, your interviewer will obviously be looking to hear that you have adequate knowledge when it comes to coding processes. But most importantly, your interviewer will be looking to gauge your ability to be a team player and focus on the bigger picture when working on a project. In your answer, focus on your attention to detail and your ability to help others when needed.

Ryan's Answer #1
"As an experienced software engineer, I fully expect my colleagues to reach out to me for my insight and I never hesitate to provide open and honest feedback. When asked to do this, my main focus is ensuring that the code is readable and functional. If there are lines of code that need to be removed, I don't hesitate to let my colleague know that while also giving them feedback on why I feel it is unnecessary."
Ryan's Answer #2
"When I'm asked to do this in my current position, my main focus is on regulatory requirements that were put in place for the project and security issues. I work with a team of great engineers that are very efficient coders and these two areas are most often overlooked."
11.
What experience do you have in the different types of software maintenance?
As a reputable company, Tenable Network Security takes their software maintenance processes seriously and your interviewer is looking to hear that you are familiar with the four different types of software maintenance. Talk to your interviewer about any work you have done in the past with corrective, adaptive, perfective and/or preventative software maintenance. Use specific examples and make sure that your interviewer walks away from your conversation knowing that you understand the importance of proper system maintenance.

Ryan's Answer #1
"Being familiar with all four types of software maintenance, my most used method of maintenance in my current role is corrective. Based on bug reports from end users, I work through coding and logic issues to resolve issues in a timely and effective manner. In the maintenance I perform, I never hesitate to pick up the phone and contact customers to hear first hand about what they are experiencing. By doing this, they feel like they are an important part of the process and it reflects well on me and my organization."
Ryan's Answer #2
"In my current role, I'd definitely say that a majority of the maintenance work that I do is adaptive maintenance. Working in banking software that is used around the globe, I help perform system maintenance for changes in currency on a pretty regular basis. This work requires research and talking with end users to help adapt the programs for their use. If hired here at Tenable Network Security, I also have experience performing perfective, preventative and corrective maintenance on software as well."
12.
In your current work, what are the important steps you take in the data validation process?
Depending on your training and your past roles prior to interviewing at Tenable Network Security, you may be familiar with one or two of the many trains of though regarding the steps of a data validation. Whatever formal process you are familiar with, be sure to check the boxes of discussing data screening and data verification as part of your process. Your interviewer will be looking to hear that you check those boxes as they are imperative in the software field.

Ryan's Answer #1
"As I embark on a data validation process in my current role, my first step is to roadmap a detailed plan to keep on task. I utilize benchmarks and the expectations of key stakeholders as my guide. Once underway, I validate the database and the data formatting to ensure that data is properly screened for its overall health. Then, by finishing with sampling, tests are performed to hopefully show that the data is useful within the system."
Ryan's Answer #2
"The most important steps in a data validation process are determining the data to sample, scouring the existing database and validating the final data format. My first step is to use my best judgment to determine if I will validate a sample or the entire data set. This determination is based on overall size of the set and the timeframe that I have to work on the project. Then, I take the time to screen data in the existing database to calculate the number of unique ID's and records to come into the system. Last, I have to verify that the source data matches the schema within the targe"
13.
How do you stay organized and on track when working on multiple projects or duties at the same time?
In this role with Tenable Network Security, you will likely be expected to manage multiple projects at the same time. Your ability to plan, manage deadlines and handle high needs items that come up on a regular basis will be essential to your success in this role and your interviewer is looking to hear how you plan for success. Whether you utilize an electronic tool or a written list, there are no right or wrong answers as long as you can prove in your answer that this method works out great for you.

Ryan's Answer #1
"With any project that I am working on, I make sure to set benchmarks to meet deadlines ahead of time and set early personal deadlines to allow for some wiggle room. To do this, I am a proponent of using the Microsoft Outlook calendar and tasks functions to help keep me organized. I find that this method helps me stay on track with multiple projects while also leaving me wiggle room each day to fight the high needs fires that do come up in this job."
Ryan's Answer #2
"For me to stay on track, I make sure to take ten minutes at the end of each day to recap what was accomplished, what new came up on my task list and re-prioritizing my work for the next day. Then, upon arriving the next day and working through emails from the previous evening, I can adjust my task list for the day if needed. I tend to set aside two hours per day to work on long-term project needs while focusing a majority of my time on the short-term needs."
14.
What do you feel is one of the top issues that is faced by data engineers today?
Being in the midst of the greatest technological revolution in the history of man, data engineers face many difficult issues in the work that they perform on a daily basis. While there are many directions that you can go with this question, be sure to focus your answer on something that you can speak passionately about. If you can research a common issue in the industry that Tenable Network Security works in, you may likely score some bonus points with your interviewer.

Ryan's Answer #1
"Over the past couple of years, I've come to realize that one of the largest issues we face as data engineers is the large amounts of data that are needed to store and then draw information from. Here at Tenable Network Security, I can only imagine how big of an issue that is in the healthcare industry. I have a lot of experience with cloud based data storage and also server based storage."
Ryan's Answer #2
"In my recent experiences, continuous, real-time integration is an issue that we will face each and every day moving forward. The need for fast paced information is certainly to blame for this. To stay on top of the continuous integration landscape, I am happy to hear that new and improved systems are being created to stay more real-time and up to the minute. Here at Tenable Network Security and working in the financial industry, how have you seen this need for real-time data impact your products?"
15.
Tell me about your problem-solving skills. Do you enjoy analyzing and solving complex problems?
Software developers spend a great deal of time debugging programs. It is essential for Tenable Network Security to have someone experienced in quickly identifying problems and responsive in providing solutions. The interviewer would also like to gauge how you work with internal and external customers when problem-solving.

Ryan's Answer #1
"In my last development position, I was responsible for front-line communications with end users. Third tier helpdesk staff would contact me with software bugs, and I was able to quickly and professionally respond to problems. I was able to reduce the bug backlog by 70%."
Ryan's Answer #2
"If you did not have a good relationship with your previous boss: "I have had healthier relationships in the past with previous employers, but we did the best that we could. Our communication styles were very different which made it challenging at times."
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