DNS Flashcards

1
Q

Quem faz as chamadas de DNS?

A

DNS recursor

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2
Q

Quais são os tipos de DNS recursor?

A

Recursivo, iterativo

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3
Q

Qual o primeiro servidor em uma consulta DNS?

A

Raiz

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4
Q

Qual o servidor responsável por consultas de .com ou .br?

A

Servidor de nível superior ou TLD

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5
Q

Qual o último servidor em uma chamada DNS?

A

Servidor Autoritativo

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6
Q

Qual o servidor responsável por registros NS?

A

Autoritativo

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7
Q

Qual protocolo o DNS usa por default?

A

UDP

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8
Q

Qual o tipo de registro de DNS que mapeia registros ipv4 diretamente?

A

A

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9
Q

Qual registro de DNS mapeia endereços de ipv6?

A

AAAA

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10
Q

Como DNSSEC protege?

A

Usa cripto assimétrica para validar registros

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11
Q

Qual o tipo de registro que mantém informações sobre dominio ou zona?

A

SOA (autoridade)

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12
Q

Qual registro tem informações de email?

A

DNS MX

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13
Q

Qual registro mapeia IPs para domínios?

A

PTR, que faz reverse lookup

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14
Q

Qual a ordem de chamada de DNSs?

A

Raiz, TLD (nivel superior), autoritativo

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