Test-Connection [-ComputerName] <string[]> [[-Source] <string[]>] [-AsJob] [-Authentication {<Default> | <None> | <Connect> | <Call> | <Packet> | <PacketIntegrity> | <PacketPrivacy> | <Unchanged>}] [-BufferSize <int>] [-Count <int>] [-Credential <PSCredential>] [-Delay <int>] [-Impersonation {<Default> | <Anonymous> | <Identify> | <Impersonate> | <Delegate>}] [-Quiet] [-ThrottleLimit <int>] [-TimeToLive <int>] [<CommonParameters>]

C:\PS>test-connection server01

Source        Destination     IPV4Address     IPV6Address  Bytes    Time(ms)
------        -----------     -----------     -----------  -----    --------
ADMIN1        Server01        157.59.137.44                32       0
ADMIN1        Server01        157.59.137.44                32       0
ADMIN1        Server01        157.59.137.44                32       0
ADMIN1        Server01        157.59.137.44                32       1

Description
-----------
This command sends echo request packets ("pings") from the local computer to the Server01 computer. This command uses the ComputerName parameter to specify the Server01 computer, but omits the optional parameter name.

C:\PS>test-connection -computername server01, server02, server12

Description
-----------
This command sends pings from the local computer to several remote computers.

C:\PS>test-connection -source Server02, Server12, localhost -computername Server01  -credential domain01\admin01

Description
-----------
This command sends pings from different source computers to a single remote computer, Server01. It uses the Credential parameter to specify the credentials of a user who has permission to send a ping request from the source computers. Use this command format to test the latency of connections from multiple points.

C:\PS>test-connection -computername Server01 -count 3 -delay 2 -TTL 255 -buffersize 256 -throttle 32

Description
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This command sends three pings from the local computer to the Server01 computer. It uses the parameters of Test-Connection to customize the command.

Use this command format when the ping response is expected to take longer than usual, either because of an extended number of hops or a high-traffic network condition.

C:\PS>$job = test-connection -computername (get-content servers.txt) -asjob

C:\PS> if ($job.jobstateinfo.state -ne "Running") {$results = receive-job $job}

Description
-----------
This example shows how to run a Test-Connection command as a Windows PowerShell background job. 

The first command uses the Test-Connection cmdlet to ping many computers in an enterprise. The value of ComputerName parameter is a Get-Content command that reads a list of computer names from the Servers.txt file. The command uses the AsJob parameter to run the command as a background job.

The second command checks to see that the job is not still running, and if it is not, it uses a Receive-Job command to get the results and store them in the $results variable.

C:\PS>test-connection Server55 -credential domain55\user01 -impersonation Identify

Description
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This command uses the Test-Connection cmdlet to ping a remote computer. The command uses the Credential parameter to specify a user account with permission to ping the remote computer and the Impersonation parameter to change the impersonation level to "Identify".

C:\PS>if (test-connection -computername Server01 -quiet) {new-pssession Server01}

Description
-----------
This command creates a PSSession on the Server01 only if at least one of the pings sent to the computer succeeds.

The command uses the Test-Connection cmdlet to ping the Server01 computer. The command uses the Quiet parameter, which returns a Boolean value, instead of a Win32_PingStatus object. The value is $True if any of the four pings succeed and is, otherwise, false.

If the Test-Connection command returns a value of $True, the command uses the New-PSSession cmdlet to create the PSSession.