Describe the process of a DNS lookup when a client queries a DNS server for a specific domain name, including how the server responds if it is authoritative or non-authoritative for the domain.
Tuesday, 02 April 2024
by EITCA Academy
When a client initiates a Domain Name System (DNS) lookup by querying a DNS server for a specific domain name, a series of steps are involved in resolving the domain to an IP address. This process is crucial for translating human-readable domain names into machine-understandable IP addresses, facilitating communication over the internet. Understanding the intricacies
- Published in Cybersecurity, EITC/IS/CNF Computer Networking Fundamentals, Domain Name System, Introduction to DNS, Examination review
Tagged under:
Authoritative DNS Server, Cybersecurity, DNS, DNS Lookup, IP Address, Non-Authoritative DNS Server
The non-authoritative DNS lookup means the queried DNS server doesn't own a particular domain and hence may not have all of the information about it.
Monday, 18 December 2023
by Acácio Pereira Oliveira
The non-authoritative DNS lookup refers to a situation where the queried DNS server does not have ownership of a specific domain and may not possess all the information associated with it. This concept is an essential aspect of the Domain Name System (DNS), which plays a crucial role in translating human-readable domain names into machine-readable