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802 standards > DNS > Flashcards

DNS Flashcards

1
Q

A / AAAA record type

A

links hostname to IPv4 (A) / IPV6 (AAAA) address

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2
Q

CNAME

A

Canonical name: points hostname to another (sub)domain

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3
Q

MX

A

determines the hostname for the mail server

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4
Q

SOA

A

Start of Authority: details for DNS zone transfer (primary to secondary) based on the serial number

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5
Q

PTR

A

Pointer (reverse DNS lookup): IP to domain name (check not spam, troubleshooting)

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6
Q

TXT

A

add text to dns record (for security/authentication purposes)

  • -> SPF (Sender policy framework)
  • -> DKIM (Domain Key Identified Mail)
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7
Q

NS

A

nameserver: indicates authoritative DNS nameserver

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8
Q

SRV

A

service: specifies host & port number for specific service

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802 standards (25 decks)

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