Network Technology Interview Questions

11,126 network technology interview questions shared by candidates

- Troubleshoot optical connection from a router to an ISP, how to troubleshoot (light meter, ports turned up, swap TX/RX) - BGP peer doesn't come up, ping fails, what else to troubleshoot (ACL blocks ping, check ARP able) - Two routers in metro network, connected to private WAN. How to get local traffic to prefer one router for exit (LOCAL_PREF). - Differences between ISIS and OSPF (not ISIS layer-2; they run it over IP) - Top 3 advantages of MPLS (traffic engineering, scaling, cost reduction - not necessarily the top 3 others would cite)
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Senior Network Engineer, Cloud

Interviewed at Microsoft

4
Mar 22, 2022

- Troubleshoot optical connection from a router to an ISP, how to troubleshoot (light meter, ports turned up, swap TX/RX) - BGP peer doesn't come up, ping fails, what else to troubleshoot (ACL blocks ping, check ARP able) - Two routers in metro network, connected to private WAN. How to get local traffic to prefer one router for exit (LOCAL_PREF). - Differences between ISIS and OSPF (not ISIS layer-2; they run it over IP) - Top 3 advantages of MPLS (traffic engineering, scaling, cost reduction - not necessarily the top 3 others would cite)

1) what is dns and explain 2) what is dhcp and explain 3) what is osi model and explain all the layers 4) what is nat 5) what are private network ranges 6) what is tcp 7) what is 3 way handshake 8) what is vpn 9)what is ssl 10) explain ssl handshake
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Trainee Associate Network Engineer

Interviewed at Capgemini

4.2
Nov 24, 2021

1) what is dns and explain 2) what is dhcp and explain 3) what is osi model and explain all the layers 4) what is nat 5) what are private network ranges 6) what is tcp 7) what is 3 way handshake 8) what is vpn 9)what is ssl 10) explain ssl handshake

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