F5 Networks Interview Questions | Glassdoor

F5 Networks Interview Questions

Updated Dec 7, 2017
200 Interview Reviews

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  1. Helpful (2)  

    Network Support Engineer Interview

    Anonymous Interview Candidate in Seattle, WA
    No Offer
    Positive Experience
    Average Interview

    Application

    I applied online. The process took 6 weeks. I interviewed at F5 Networks (Seattle, WA) in January 2017.

    Interview

    Im just in the first steps of the process.
    First they send you a link to answer 10 technical questions. The platform consist they give you an answer and they record a video with your answer. THey give you an average of 1:30min to answer.
    They ask me one behaviorial question and the other 9 were technical.
    Two weeks later, they send me a request for a phone screening.

    Interview Questions

    • Port and protocol used by DNS
      Commando to FTP
      What is a tcp connection
      what is the netmask   1 Answer

  2. Helpful (2)  

    Marketing Communications Manager Interview

    Anonymous Interview Candidate in Seattle, WA
    No Offer
    Negative Experience
    Average Interview

    Application

    I applied online. The process took 2+ months. I interviewed at F5 Networks (Seattle, WA) in January 2017.

    Interview

    I had an initial phone interview and was chosen to meet with the hiring manager in person at the F5 office. The office was easy to get to and parking was good. They validated when I was done which is a plus. The interview lasted an hour. The hiring manager said they would get back to me in a few days. When they didn't follow up, I sent a note to the HR contact. She never got back to me. I've written them off since I haven't heard back. It is common courtesy when coming in for an in-person interview to at least mention that it was the end of the line...but nothing.

    Interview Questions

  3.  

    Network Support Engineer I Interview

    Anonymous Interview Candidate in Liberty Lake, WA
    No Offer
    Positive Experience
    Easy Interview

    Application

    I applied online. The process took 1 day. I interviewed at F5 Networks (Liberty Lake, WA) in January 2017.

    Interview

    The initial digital interview consisted of answering about ten questions that I had to record by video. The recordings were facilitated by a web service that allowed thirty seconds for me to read the question and contemplate an answer, then record the answer. Each response was given a fixed time to respond, thirty seconds for short answers up to about three minutes for longer responses depending on the question, and could not be redone or reviewed. The first question was a warm-up, to practice the format and presentation. I was allowed to review and rerecord the first response for practice. The whole process lasted about fifteen minutes.

    Interview Questions

    • How comfortable are you with Unix or Unix-like operating systems?   1 Answer
    • How does a TCP connection initiate?   2 Answers
    • Which ports do DNS queries use?   1 Answer
    • Where can you access log files on a Linux operating system?   1 Answer

  4.  

    Software Engineer Interview

    Anonymous Interview Candidate
    No Offer
    Negative Experience
    Easy Interview

    Application

    I applied online. The process took 2+ months. I interviewed at F5 Networks in January 2017.

    Interview

    I applied in mid December 2016. And I was contacted by f5 recruiter in Mid January 2017. Recruiter setup interview with a Software Engineer. The interview lasted for about 20 - 30 minutes. I was asked to write a simple C program on collabedit.
    At the end of the interview, the interviewer gave me a positive feedback. He said I should expect to be called for on-site interview. After a couple of days, recruiter reaches out to me and asked me for my availability for on-site interview. After I sent him days/times, he replied saying that he made a mistake in his previous email and that he has not received a final decision yet for my interview from the hiring manager. It could be a genuine mistake but, imagine how you would feel to be told it was a mistake after you rescheduled other interviews for this one. I emailed the recruiter a few times and he told me there is no update. Then in late March 2017 I received a generic rejection email.

    Interview Questions


  5. Helpful (8)  

    Network Support Engineer II Interview

    Anonymous Employee in Seattle, WA
    Accepted Offer
    Positive Experience
    Difficult Interview

    Application

    I applied online. The process took 6 weeks. I interviewed at F5 Networks (Seattle, WA) in October 2016.

    Interview

    1. Technical Screening

    The interview process started with a technical screening video. During this process they sent me a link that took me to a website where I was asked a series of questions, a few examples being.

        What FTP commands are used to upload and download files? (put, get)
        Can you describe TCP handshake? (SYN, SYN-ACK, ACK)
        Are you comfortable with using CLI? (Yes)
        What port is DNS? (Port 53)
        What is the difference between UDP and TCP? (TCP is connection-oriented, UDP is not)

    2. Phone Screening

    About a week after this was sent in, I was emailed for a phone screening with the F5 recruiter that I was working with. On this call she seemed to just be gauging my interest, looking to see what salary range I wanted, and several questions about my background in tech. At the end of this call she advised that she would like to schedule an interview at their building in the next week or so, and after a few days we were able to schedule this out.

    3. In Person Interview

    The in person interview is a 2-3 hour interview that begins with a more grueling technical screening to see if you are a better fit for a NSE 1 or NSE 2 position. It consisted questions about Linux (e.g. how to view file permissions, change file permissions, how to view open ports, reading files) and then the interviewer wrote some advanced commands on a whiteboard and asked if you could step through what they would be doing. My main takeaways from this exercise was to know that WC and XARGS are. After the Linux questions we ran through several scenarios with a diagram of an existing network, and answered questions about how to fix various issues with traffic not exiting or moving correctly between a WAN. Main takeaway from this is to go in knowing how switching, routing, firewalls, routing protocols, and other general Layer 2 to Layer 4/5 technologies work so that you can troubleshoot and answer questions about a network. Most of this knowledge you can get from a Net+ exam. Not being in a network administrator or engineer position before I did struggle with some of the network and Linux questions, but did my homework beforehand to have a general idea of all of this.

    The second step in the in person interview was to site down with two of the support managers and find out why you would be a good fit. Most of the questions were traditional (e.g. give an example of a time that you had to deal with a difficult end user, have you used ticketing systems before, why are you leaving your current job, where do you see yourself going from here), but the question that did stick out is that we played 20 questions toward the end of this interview. This was actually my favorite part of any interview that I've had, as I feel that it does show an underlying skill for troubleshooting something you may not know anything about. Just be sure to ask the right questions, and operate in sort of a binary search tree manner. Use questions to eliminate the most items possible right out of the gate.

    The third interview was with the VP of services and this was similar to the previous, though maybe at a higher level. I took the time to ask him questions about F5, the future of the network security industry, and the future of support that I genuinely wanted his opinions on as a successful individual in the industry.

    4. Post Interview

    After the interview I met with my F5 recruiter who walked me out of the building. A day or so later she contacted me advised they would like to extend an offer, but for the NSE 1 position instead of NSE 2. I had been expecting that after the in person technical interview, so I was excited about the offer. It has taken about a week for the referral and background check to complete, which is fairly normal in my experience.

    Interview Questions

    • You've replaced the firewall in your network. Before replacing the firewall you double-checked all configurations against the existing firewall to ensure they match exactly. However, when you perform the replacement no traffic is able to get out to the internet. What would/could be the issue on your network?   1 Answer

  6.  

    FPGA Engineer - I Interview

    Anonymous Interview Candidate in San Jose, CA
    No Offer
    Positive Experience
    Easy Interview

    Application

    I applied online. The process took 3 weeks. I interviewed at F5 Networks (San Jose, CA) in September 2016.

    Interview

    I applied online and connected with the Manager on LinkedIn. The while process took about 3 weeks. It was originally for the FPGA Engineer - II position. However, they did not find anyone suitable for the position and downgraded the position to FPGA Engineer - I. The HR then contacted me and set me up for a phone interview with the Hiring Manager and one of his Senior Engineers. The phone interview with the Hiring Manager was mostly resume based. The Sr Engineer asked me Verilog based questions which I had to code on Collabedit (live online coding). The next day, The Hiring Manager set me up for an on-site interview a week from then. He also gave me a project to work on, which I had to present in front of a panel.

    The on-site interview was about 5 hours long. Including the panel interview, I had 7 rounds. 3 technical, 3 managerial and 1 panel. All of them were very friendly and made sure I was comfortable. It was a good experience. The technical rounds started simple and they started to increase the difficulty of the questions with each answer of mine. They don't want to see if you know everything, they only wanted to know how one approaches the problem at hand.

    Overall, it was a good experience and I was expecting a positive result. Sadly, Lady Luck wasn't on my side :(

    Interview Questions

    • Basic logic design questions that started to get more complex with each answer of mine.   1 Answer

  7.  

    Senior Product Marketing Manager Interview

    Anonymous Interview Candidate in San Jose, CA
    No Offer
    Negative Experience
    Easy Interview

    Application

    I applied through a recruiter. The process took 1 day. I interviewed at F5 Networks (San Jose, CA) in September 2016.

    Interview

    Their in house recruiter contacted me via Linkedin. I had a phone call with him just out of curiosity. He asked me if I knew of F5. I work for their top competitor in the same role. He should have know this. I'm also connected via Linkedin to many of their management team who I know from a previous job, which I brought to his attention. This didn't seem to register with him. He then asked me if I've ever written whitepapers. That's like asking me if I've ever sent an email. I've written dozens and dozens of whitepapers. He could have looked at my blog that is linked to on my LinkedIn and discovered this or he could have looked at my Linkedin Posts and seen that I have very relevant expertise. He then went on to tell me about how many whitepapers I'd be expected to write for them. I asked him what they needed the whitepaper for but he didn't have any idea. He then asked me about pay and I gave him my range. He said that I was high. I told him how I had proven successful experience with marketing the same type of product to the service provider market that they were trying to break into and that his type of experience was quite rare and valuable. This information didn't register with him. I told him that if they wanted to have a discussion of what it would take to be successful in this role I'd consider that. I never heard back.

    Interview Questions

  8.  

    Software Engineer Interview

    Anonymous Interview Candidate in Seattle, WA
    No Offer
    Positive Experience
    Difficult Interview

    Application

    I applied online. The process took 2 weeks. I interviewed at F5 Networks (Seattle, WA) in September 2016.

    Interview

    Got a phone call. Flew over to Seattle for an interview. Met with the hiring manager. The interveiws was a relay of interviews four which covered several topics about the skills needed for the job. Some of the interviewers did not seem like they were on board with the method. Took about two hours in total. Got a phone call back regarding my interview back in a couple of days.

    Interview Questions


  9. Helpful (1)  

    SOC Analyst Interview

    Anonymous Employee in Seattle, WA
    Accepted Offer
    Positive Experience
    Average Interview

    Application

    I applied through an employee referral. The process took 2 weeks. I interviewed at F5 Networks (Seattle, WA) in August 2016.

    Interview

    Applied online, within 24 hours received an invitation to take a HackerRank test. 15 minutes after completing the test received an email to set up a phone screen. After the phone screen scheduled a phone-based personality interview. After the personality interview, scheduled a phone-based technical interview. After that, scheduled a day of interviews on-site, including another technical interview, an interview with a panel of managers, and finally an interview with the VP.

    Interview Questions

    • Does TLS use asymmetric or symmetric cryptography?   1 Answer

  10.  

    Senior Software Engineer Interview

    Anonymous Interview Candidate in Seattle, WA
    No Offer
    Neutral Experience
    Average Interview

    Application

    I applied online. The process took 1+ week. I interviewed at F5 Networks (Seattle, WA) in June 2016.

    Interview

    Initially just did some phone calls with management and HR people, sounding one another out about what the others goals were. I have an interest in low level software which seems to dovetail well with F5's product line. I felt there was a good match. I'm a senior person with a lot of experience from serial and video drivers up though system management of these devices as well as lots of network experience.

    Next I was invited in for a day of interviews. I generally get nervous during interviews and don't think well. I had 2 technical interviews where we chatted about goals, products experience etcetera leaving about 30 minutes for the coding questions.

    After the tech interviews, I went out to lunch with the managers who initially seemed interested, but cooled as we talked. I expressed interest in low level stuff, but I think they're more interested in exporting that code to a service environment.

    The next day they were good enough to call and obliquely inform me I didn't get the job because they had found a better fit with assurances that I was the right guy for F5.

    I've contacted them subsequently with no reply.

    Interview Questions

    • The first tech question concerned parsing an algebraic expression in a string. I had about a half an hour.   1 Answer
    • Next, after a similar chat, I was asked to implement a ringbuffer.   1 Answer

See What F5 Networks Employees Are Saying

StarStarStarStarStar     Former Anonymous Employee

Pros: “Great environment, teams. Exposure to leading edge technologies and processes.”“Great environment, teams. Exposure to leading edge technologies and processes.” – Full Review

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