An organization moved its DNS servers to new IP addresses. After this move, customers are no longer able to access the organization's website. Which of the following DNS entries should be updated?

Rationale

The NS (Name Server) records should be updated.

The NS records indicate which name servers are authoritative for a domain. When an organization changes its DNS servers to new IP addresses, it is essential to update the NS records to ensure that queries for the domain are directed to the correct servers, allowing customers to access the website.

A (AAA) YOUR ANSWER

AAA records map a domain name to an IPv6 address. While important for directing traffic, simply updating AAA records will not resolve the issue of customers being unable to access the website after the DNS server move, as the primary concern is the name server's authority over the domain.

B (CNAME) YOUR ANSWER

CNAME records create an alias for a domain name, pointing it to another domain. While CNAME records can direct users to different services, they do not affect the fundamental issue of addressing the authoritative name servers, which is crucial after the organization's DNS server relocation.

C (MX) YOUR ANSWER

MX (Mail Exchange) records determine the mail servers responsible for receiving email on behalf of the domain. Although critical for email functionality, updating MX records will not address the connectivity issue for the website itself, which is directly dependent on the correct NS settings.

D (NS) CORRECT

NS records are responsible for indicating which DNS servers are authoritative for a domain. They need to be updated when the DNS servers are moved to new IP addresses to ensure that DNS queries are properly directed, thus allowing customers to access the organization's website.

Conclusion

Updating the NS records is essential after an organization moves its DNS servers to new IP addresses. This action ensures that the domain queries are resolved correctly, allowing customers to access the website without disruption. Other DNS records like AAA, CNAME, and MX do not address the core issue of server authority and will not resolve accessibility problems following such a migration.

An organization moved its DNS servers to new IP addresses. After this move, customers are no longer able to access the organization's website. Which of the following DNS entries should be updated?

The NS (Name Server) records should be updated.

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