220-1201: CompTIA A+ Certification Exam: Core 1

By CompTIA · Question Mode

QuestionQ37

Networking

A technician needs to update a web server’s IPv4 address in a DNS server. Which of the following records should the technician update?

Explanation

An A record maps a hostname to an IPv4 address, so it is the record that must be updated whenever a web server's IPv4 address changes. AAAA maps to IPv6 addresses, MX designates mail exchange servers, and CNAME is an alias to another name rather than to an address.

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