220-801 · Question #404
Which of the following protocols is used to translate fully qualified domain names into IP addresses?
The correct answer is B. DNS. DNS (Domain Name System) is the protocol responsible for resolving fully qualified domain names (FQDNs) into their corresponding IP addresses so network connections can be established.
Question
Which of the following protocols is used to translate fully qualified domain names into IP addresses?
Options
- ALDAP
- BDNS
- CDHCP
- DSMTP
How the community answered
(43 responses)- A7% (3)
- B86% (37)
- C2% (1)
- D5% (2)
Why each option
DNS (Domain Name System) is the protocol responsible for resolving fully qualified domain names (FQDNs) into their corresponding IP addresses so network connections can be established.
LDAP is a protocol for querying and modifying directory services (such as Active Directory) and does not perform name-to-IP resolution.
DNS functions as the internet's phone book, translating human-readable FQDNs like 'www.example.com' into machine-readable IP addresses (e.g., 93.184.216.34). When a client needs to reach a hostname, it sends a query to a DNS resolver, which returns the corresponding IP address so the client can initiate the TCP/IP connection.
DHCP assigns IP addresses to devices dynamically but does not perform hostname-to-IP translation.
SMTP is an email transmission protocol and has no function related to domain name resolution.
Concept tested: DNS protocol and FQDN to IP address resolution
Source: https://learn.microsoft.com/en-us/windows-server/networking/dns/dns-top
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