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1) Introduce yourself ? 2) What kind of vendors you have working with? 3) What routing protocols you are familiar with ? OSPF & BGP? 4) Can you explain to me any troubleshooting you came across? 5) If somebody asking you to run debug command on a critical device which is running a lot of traffic , what will you do? 6) If BGP neighbors are down and you looked at all possible things, only debug is the choice left what will you do, if you have to run that command on a critical device? 7) How do you actually see if the device is actually busy? how will you check to see if the router is able to handle the debug command? 8) How do you know if there is a less load or more load? 9) Do you build network for your customers? 10) What is the biggest network you have built ? How did you convince the PM or higher management to fund for that built? 11) When you design a network, what do you document before starting the process? 12)How do you decide on the vendor, which vendor will you pick. Cisco/Juniper/Arista ? 13) Did you guys have lab ? 14) What is the difference between IGP or EGP? 15) Why do we actually use 2 different types of protocol, why not just OSPF over internet ? 16) If you have a default route from your ISP, why can’t you just run OSPF with your ISP ? 17)How does BGP avoid loops ? 18)Loop prevention in IBGP? 19) Can we force BGP router to accept its own As-path advertisement, basically can we violate it ? (AS override) 20) Can you explain route- reflector? 21) Could you explain a situation you troubleshooted BGP related issues? 22) Did you troubleshoot any BGP issue when the production network went down? 23) Any troubleshooting issues with OSPF ? 24) If you Configuring ospf between 2 devices and its is stuck in INTI state, what could be the issue ? 25) What is the NSSA in OSPF ? 26) What are some of the problems with asymmetric routing? 27) If you are on-call, somebody calls you and say if the whole network is down, what are the troubleshooting steps you will take?
avatar

Network Development Engineer II

Interviewed at Amazon

3.5★
Jul 23, 2020

1) Introduce yourself ? 2) What kind of vendors you have working with? 3) What routing protocols you are familiar with ? OSPF & BGP? 4) Can you explain to me any troubleshooting you came across? 5) If somebody asking you to run debug command on a critical device which is running a lot of traffic , what will you do? 6) If BGP neighbors are down and you looked at all possible things, only debug is the choice left what will you do, if you have to run that command on a critical device? 7) How do you actually see if the device is actually busy? how will you check to see if the router is able to handle the debug command? 8) How do you know if there is a less load or more load? 9) Do you build network for your customers? 10) What is the biggest network you have built ? How did you convince the PM or higher management to fund for that built? 11) When you design a network, what do you document before starting the process? 12)How do you decide on the vendor, which vendor will you pick. Cisco/Juniper/Arista ? 13) Did you guys have lab ? 14) What is the difference between IGP or EGP? 15) Why do we actually use 2 different types of protocol, why not just OSPF over internet ? 16) If you have a default route from your ISP, why can’t you just run OSPF with your ISP ? 17)How does BGP avoid loops ? 18)Loop prevention in IBGP? 19) Can we force BGP router to accept its own As-path advertisement, basically can we violate it ? (AS override) 20) Can you explain route- reflector? 21) Could you explain a situation you troubleshooted BGP related issues? 22) Did you troubleshoot any BGP issue when the production network went down? 23) Any troubleshooting issues with OSPF ? 24) If you Configuring ospf between 2 devices and its is stuck in INTI state, what could be the issue ? 25) What is the NSSA in OSPF ? 26) What are some of the problems with asymmetric routing? 27) If you are on-call, somebody calls you and say if the whole network is down, what are the troubleshooting steps you will take?

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