220-801 · Question #576
Which of the following describes the use of the DNS protocol as it relates to a TCP/IP network?
The correct answer is C. Provides mapping of user friendly names to network resources. DNS (Domain Name System) resolves human-readable hostnames like domain names into IP addresses that network devices can route to.
Question
Which of the following describes the use of the DNS protocol as it relates to a TCP/IP network?
Options
- AProvides remote connectivity to resources on the network
- BProvides separate control and data connections between network resources
- CProvides mapping of user friendly names to network resources
- DProvides automated addressing to resources on the network
How the community answered
(45 responses)- A4% (2)
- B2% (1)
- C93% (42)
Why each option
DNS (Domain Name System) resolves human-readable hostnames like domain names into IP addresses that network devices can route to.
Remote connectivity to resources is the function of protocols like VPN, RDP, or SSH, not DNS.
Separate control and data connections describe how FTP operates using distinct channels on ports 20 and 21.
DNS functions as the internet's directory service, translating user-friendly fully qualified domain names (FQDNs) into the numeric IP addresses required for TCP/IP routing. When a user types a domain into a browser, a DNS resolver queries authoritative name servers hierarchically to return the corresponding IP address. Without DNS, users would need to manually enter IP addresses to reach resources.
Automated IP address assignment to network resources is the role of DHCP, not DNS.
Concept tested: DNS hostname to IP address resolution
Source: https://learn.microsoft.com/en-us/windows-server/networking/dns/dns-top
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