seewcfutil parameter parameter . .
Sets various WCF parameters for use by the system.
Displays the current WCF information.
Displays minimal console output.
Displays more console output.
seewcfutil -status  
WU0002I Processing C:\Windows\Microsoft.NET\Framework\v4.0.30319\SMSvcHost.exe.config:
   Listen backlog:      10
   Pending connections: 100
   Pending accepts:     2
   Receive timeout:     00:00:30
   Allowed accounts:
      S-1-5-32-568 (BUILTIN\IIS_IUSRS)
      S-1-5-18 (NT AUTHORITY\SYSTEM)
      S-1-5-32-544 (BUILTIN\Administrators)
      S-1-5-19 (NT AUTHORITY\LOCAL SERVICE)
      S-1-5-20 (NT AUTHORITY\NETWORK SERVICE)
WU0002I Processing C:\Windows\Microsoft.NET\Framework64\v4.0.30319\SMSvcHost.exe.config:
   Listen backlog:      10
   Pending connections: 100
   Pending accepts:     2
   Receive timeout:     00:00:30
   Allowed accounts:
      S-1-5-32-568 (BUILTIN\IIS_IUSRS)
      S-1-5-18 (NT AUTHORITY\SYSTEM)
      S-1-5-32-544 (BUILTIN\Administrators)
      S-1-5-19 (NT AUTHORITY\LOCAL SERVICE)
      S-1-5-20 (NT AUTHORITY\NETWORK SERVICE)
seewcfutil -nobanner -conn:100 , sets the maximum pending connections to 100.