What is "DNS Client" in my Windows 8 service list? And how is "DNS Client" service related to dnsrslvr.dll?

"DNS Client" is a Windows 8 service that The DNS Client service (dnscache) caches Domain Name System (DNS) names and registers the full computer name for this computer. If the service is stopped, DNS names will continue to be resolved. However, the results of DNS name queries will not be cached and the computer's name will not be registered. If the service is disabled, any services that explicitly depend on it will fail to start. "DNS Client" service is provided by dnsrslvr.dll program file.

Detailed information on "DNS Client" service:

Service name: Dnscache
Display name: DNS Client
Execution command: C:\Windows\system32\svchost.exe -k NetworkService
Dependencies: {Tdx, nsi}

"DNS Client" service is provided by a program called: dnsrslvr.dll:

Name: dnsrslvr.dll
Location: C:\Windows\System32\dnsrslvr.dll
Description: DNS Caching Resolver Service
File version: 6.2.9200.16384 (win8_rtm.120725-1247)
Size: 210432 bytes
Modified: 9/20/2012 6:31:07 AM UTC

Disabling "DNS Client" service may cause issues when running Windows 8 system.

⇒"svchost.exe -k NetworkService" Services on Windows 8

⇒⇒Windows 8 Services Tutorials