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Senior Network Engineer Interview Questions

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1,039 senior network engineer 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) OSPF --> Difference Between Stub And Totally Stub Area?? 2) What Is Cisco Route-map?? 3) Difference Between VLAN & VRF ?? 4) BGP--> What Is Well Known Mandatory Attribute In BGP ?? Give An Example?? 5) OSPF--> What Are Three Conditions In OSPF For Routers To Be Neighbors??
avatar

Senior Network Engineer

Interviewed at Arkessa

4★
Dec 20, 2016

1) OSPF --> Difference Between Stub And Totally Stub Area?? 2) What Is Cisco Route-map?? 3) Difference Between VLAN & VRF ?? 4) BGP--> What Is Well Known Mandatory Attribute In BGP ?? Give An Example?? 5) OSPF--> What Are Three Conditions In OSPF For Routers To Be Neighbors??

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