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CompTIA Network+ 3.4 Cisco CCNA 4.3
TechKnowSurge Catalog Interactives Which DNS Record Answers This?
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Which DNS Record Answers This?

Which DNS record type answers each lookup?

⚑ Complete this interactive to capture a CTF flag worth 5 points.

About this interactive

From the lesson, corrected where the video slips: - **A:** host name to IPv4 address. - **AAAA (quad A):** host name to IPv6 address. - **MX:** the mail exchanger for a domain, where mail for andrew@example.com is sent. An MX record names a host (mail.example.com), which then needs its own A or AAAA record; the video says it may hold an IP address, but it must hold a name. - **CNAME (alias):** one host name pointing at another, useful when the target's IP address changes, as with cloud hosting. It is not a web redirect. - **PTR:** reverse DNS, an IP address back to a host name, often used to verify a sender. - **NS:** the name servers that host a domain's zone. An NS record names those servers by host name; the video says it gives their IP addresses, which come from the servers' own A records.

What you'll learn

Aligned to

CompTIA Network+
3.4 Given a scenario, implement IPv4 and IPv6 network services.
Cisco CCNA
4.3 Explain the role of DHCP and DNS within the network

Key terms

A Record
A DNS record type that maps a hostname to an IPv4 address.
AAAA Record
A DNS record type that maps a hostname to an IPv6 address.
MX Record
A DNS record type that specifies the mail exchange server responsible for receiving email for a domain.
CNAME Record
A DNS record type that maps one hostname to another hostname, functioning as an alias.
PTR Record
A DNS record type used for reverse DNS lookup, mapping an IP address back to a hostname.
NS Record
A DNS record type that identifies the authoritative name servers for a domain.
Domain Name System
DNS
A hierarchical naming system that translates human-readable domain names into IP addresses.

Topics

Dns Dns Records A Record Mx Record Cname Record Ptr Record Interactive Categorize

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