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Q1Harddnsdistributed-systemsinternet-infrastructure
Why is DNS considered one of the foundational systems of the internet?
Q2Hardrecursive-resolverdns-resolutiondistributed-systems
Why do recursive DNS resolvers improve internet performance significantly?
Q3Harddns-cachingscalabilitydistributed-systems
Why is DNS caching critical for internet scalability?
Q4Hardttldns-cachingconsistency
Why does DNS TTL involve a trade-off between scalability and consistency?
Q5Hardauthoritative-dnsdistributed-systemsinternet-architecture
Why are authoritative DNS servers critical in the DNS hierarchy?
Q6Harddns-load-balancingtraffic-routingscalability
Why is DNS commonly used for global traffic load balancing?
Q7Harddns-propagationdistributed-systemseventual-consistency
Why is DNS propagation inherently eventually consistent?
Q8Harddns-securitydns-spoofingcybersecurity
Why is DNS considered a major attack surface in internet infrastructure?
Q9Hardanycastdnsdistributed-networking
Why do large DNS providers heavily rely on Anycast networking?
Q10Harddnstrade-offssystem-design
What are the major trade-offs when designing DNS infrastructure?