DNS Interview Questions For Freshers

Explain the DNS resolution process.

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What is a DNS query?

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What is a DNS response?

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What is recursive DNS?

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What is iterative DNS?

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What are the types of DNS records?

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What is a DNS record?

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What is the purpose of a DNS zone file?

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What is a DNS zone?

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What is a DNS resolver?

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What is the difference between a domain name and an IP address?

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What is an IP address?

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What is a domain name?

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What are the two main components of DNS?

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What is a DNS server?

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What is DNS?

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What is the purpose of DNS?

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What is an A record?

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What is an AAAA record?

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What is a CNAME record?

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What is an MX record?

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What is a PTR record?

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What is a TXT record?

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What is a DNS cache?

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What is DNS propagation?

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What is a DNS resolver cache?

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What is a DNS attack?

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What is DNSSEC?

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DNS Intermediate Interview Questions

What is the purpose of an SOA record?

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Explain the process of DNS delegation.

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What is the purpose of a DNSKEY record?

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What is the purpose of a NAPTR record?

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What is the purpose of a SRV record?

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What is the purpose of a CAA record?

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What is the purpose of a NS record?

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What is the difference between authoritative and recursive DNS?

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What is dynamic DNS?

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What is DNS tunneling?

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What is DNS poisoning?

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What is DNS tunneling?

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What is DNS over TLS (DoT)?

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What is the purpose of DNS over HTTPS (DoH)?

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How does DNS load balancing work?

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What is a DNS sinkhole?

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What is DNS hijacking?

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What is the difference between forward and reverse DNS lookup?

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What is a DNS zone transfer?

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Explain the concept of TTL in DNS.

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What happens when a DNS query fails?

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What is the role of a DNS registrar?

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What is the role of a DNS hosting provider?

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What is round-robin DNS?

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DNS Interview Questions For Experienced

What is Fast Flux DNS?

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What is DNS amplification attack?

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What is DNS reflection attack?

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What is DNSSec Zone Signing Key (ZSK)?

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Describe the benefits of DNS caching and caching servers.

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What are the advantages of using DNS over TCP compared to DNS over UDP?

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What is DNS rebinding attack?

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What is DNS Tunneling?

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Explain the role of DNS in Content Delivery Networks (CDNs).

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What is DNS Response Policy Zone (RPZ)?

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What is DNS Load Balancer?

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What are the limitations of traditional DNS?

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What is DNS round trip time (RTT)?

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What is a DNS wildcard?

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What is the purpose of the DNS NOTIFY message?

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What is EDNS (Extension Mechanism for DNS)?

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Explain the functionality of DNS load balancing using GSLB.

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What is DNS Firewall?

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Describe the benefits of DNSSEC.

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What is Anycast DNS?

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What is DNSSec Key Signing Key (KSK)?

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