DNS Interview Questions — All Categories
4 questions tagged with DNS as a technology, across every category it appears in
Related categories:Networking
How would you differentiate a client-side DNS resolution problem from the authoritative or upstream DNS server itself being unreliable?
IntermediateDNS7 min
An application intermittently fails to resolve a hostname — most requests succeed, but a small percentage fail with a DNS error. How would you track this down?
IntermediateDNSLinux8 min
How does NodeLocal DNSCache in Kubernetes actually reduce DNS-related failures, mechanically?
AdvancedKubernetesDNS7 min
Why does DNS primarily use UDP instead of TCP, and what does that choice trade off for reliability?
IntermediateDNS6 min