svchost.exe -k networkservice - Necessary

svchost.exe -k networkservice

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Description:

svchost.exe -k networkservice
svchost.exe -k NetworkService is the standard part of Windows system.
"NetworkService " is used for starting Dnscache service.
Resolves and caches Domain Name System (DNS) names for this computer. If this service is stopped, this computer will not be able to resolve DNS names and locate Active Directory domain controllers. If this service is disabled, any services that explicitly depend on it will fail to start.