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Zorluk: KolayDNS Infrastructure and Record Types

A network administrator is publishing DNS records for a newly deployed corporate service. The domain requires web clients to resolve `www.example.com` to the IPv4 address `192.0.2.50`, and incoming domain email must be routed to `mail.example.com`.

Which TWO of the following DNS resource record types must be configured to achieve this functionality?

  1. An A record pointing www.example.com to 192.0.2.50Cevap
  2. An MX record specifying mail.example.com as the mail exchangerCevap
  3. C
    An AAAA record pointing www.example.com to 192.0.2.50
  4. D
    A PTR record mapping 192.0.2.50 to www.example.com
  5. E
    A CNAME record aliasing www.example.com directly to 192.0.2.50

Cevap

The configuration requires an A record to map the website hostname to its IPv4 address and an MX record to specify the mail gateway handling domain email.
An Address (A) record is required to map the web server hostname to its 32-bit IPv4 address. A Mail Exchanger (MX) record is required to specify the mail server responsible for accepting incoming email on behalf of the domain.

Adım Adım Çözüm

1
Identify the IPv4 address mapping requirement for the web server hostname.
Recognize that mapping a hostname (`www.example.com`) to a 32-bit IPv4 address (`192.0.2.50`) requires an Address (A) record.
Standard forward IPv4 resolution in DNS uses A records.
2
Identify the email routing requirement for the domain.
Recognize that designating a mail server (`mail.example.com`) to receive email for the domain requires a Mail Exchanger (MX) record.
Simple Mail Transfer Protocol (SMTP) servers query MX records to determine destination mail handlers.

Anahtar Kavram

DNS Host (A) and Mail Exchanger (MX) Record Functions
Tahmini Süre:1m 0s
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Konular

DNS Infrastructure and Record Types

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