Network Architect Primary Screening
Hello! Welcome to the PacketFabric Network Architect job application. We follow a simple 5 step interview process.

* Job application submission (you are here).
* 30-minute phone interview with the team lead.
* Take-home project assignment.
* 45-60 minute phone interviews with 3 engineers (peers) with whom you will regularly interact at PacketFabric.
* Reference check.

Please fill out the form below to be considered for advancement in the hiring process. You will only receive a response from PacketFabric if you are moving to the next step. We look forward to your responses!
Email *
Name *
Linkedin profile or resume URL *
How did you hear about this position? *
What do you know about PacketFabric? *
After getting the fiber connected, the customer asks you to "roll the fiber".  What do they mean? *
Explain
In simple terms how does CWDM or DWDM technologies increase the capacity available on a single fiber or fiber pair? *
At which layer does bridging occur at? *
Explain
Which of the listed terms could be technical components of a layer 2 service? Choose all that apply. *
Required
Explain
What are some examples of MP-BGP use cases? Choose all that apply. *
Required
Explain
You are given two equal spec 100gbit ethernet capable hosts connected over a private WAN, and you need to replicate large data sets using FTP between the two hosts. What parameters within your control would you tune to increase throughput regardless of latency? *
How does the TCP protocol handle retransmissions?  Describe the basic algorithm used, and how this is performed within the context of TCP sliding window mechanisms. *
Which of these is not a routing protocol? Choose all that apply. *
Required
Explain
Which of the following provides OAM functionality? Choose all that apply. *
Required
Why do network operators utilize OAM protocols? *
What address families in BGP can be used to advertise MPLS label switched paths? *
What are some common tools used to implement RSVP-TE MPLS bandwidth allocation? Choose all that apply. *
Required
Explain
Describe in detail how RSVP signals a zero bandwidth Label Switched Path from head/ingress to tail/egress.  Include any/all RSVP message types involved as well as any RSVP objects/subobjects. *
What problems can arise from a distributed bandwidth reservation system, where each head-end device performs independent calculations of bandwidth demands and makes reservations accordingly (a la RSVP Autobandwidth). How can these problems be solved by introducing a centralized controller to manage bandwidth reservations? *
Compare and contrast the differences in functionality and possible implementation goals between MPLS LDP, MPLS RSVP, and MPLS SPRING in as much detail as you feel is needed *
Compare and contrast the differences in functionality and possible implementation goals between L2VPN, VPLS, EVPN-VXLAN and EVPN-MPLS in as much detail as you feel is needed. *
Compare and contrast the abilities of PCEP vs. BGP for use in controlling LSP or SR policies externally.  What factors would you consider in choosing one over the other? *
You are tasked with creating an IP Transit service offering delivered via virtual circuits in an Ethernet fabric overlay.  What practical security and scalability concerns would you have in this scenario? *
Why are you interested in working at PacketFabric? *
A copy of your responses will be emailed to the address you provided.
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