SSH-based remoting (PowerShell 7+) - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output of this PowerShell SSH remoting command?

You run this command in PowerShell 7+ to start an interactive session on a remote machine named 'Server01' using SSH remoting:

Enter-PSSession -HostName Server01 -UserName AdminUser

What will be the immediate output if the connection is successful?

PowerShell

Enter-PSSession -HostName Server01 -UserName AdminUser

A A prompt changes to indicate the remote session, e.g., [Server01]: PS>

B The command outputs a list of running processes on Server01

C An error message: 'The term Enter-PSSession is not recognized'

D The local PowerShell session closes immediately

💡 Hint

Think about what Enter-PSSession does when connecting successfully.

Enter-PSSession starts an interactive remote session. When successful, the prompt changes to show the remote computer name, indicating you are now running commands on that machine.

💻 Command Output

intermediate

What error occurs when SSH remoting fails due to wrong credentials?

You try to connect to a remote machine using:

Enter-PSSession -HostName Server02 -UserName WrongUser

The password is incorrect. What error message will PowerShell most likely show?

PowerShell

Enter-PSSession -HostName Server02 -UserName WrongUser

A SSH authentication failed: Permission denied (publickey,password).

B The remote session starts successfully without error.

C Error: The term 'Enter-PSSession' is not recognized.

D Timeout expired while waiting for remote command to complete.

💡 Hint

Think about what happens when SSH credentials are wrong.

When SSH authentication fails due to wrong credentials, the error message indicates permission denied for authentication methods.

📝 Syntax

advanced

Which command correctly runs a script block on a remote machine using SSH remoting?

You want to run the script block { Get-Process | Select-Object -First 3 } on a remote machine 'Server03' using SSH remoting. Which command is syntactically correct?

A Invoke-SSHCommand -HostName Server03 -ScriptBlock { Get-Process | Select-Object -First 3 }

B Invoke-Command -ComputerName Server03 -ScriptBlock { Get-Process | Select-Object -First 3 }

C Invoke-Command -HostName Server03 -Command { Get-Process | Select-Object -First 3 }

D Invoke-Command -HostName Server03 -ScriptBlock { Get-Process | Select-Object -First 3 }

💡 Hint

Use the correct parameter for SSH remoting in PowerShell 7+.

For SSH remoting, Invoke-Command uses the -HostName parameter to specify the remote machine and -ScriptBlock to specify the commands to run.

🔧 Debug

advanced

Why does this SSH remoting command fail with 'The term 'Enter-PSSession' is not recognized'?

You run this command in PowerShell 5.1 on Windows:

Enter-PSSession -HostName Server04 -UserName AdminUser

and get the error:

The term 'Enter-PSSession' is not recognized as the name of a cmdlet...

What is the most likely cause?

PowerShell

Enter-PSSession -HostName Server04 -UserName AdminUser

A The user 'AdminUser' does not have permission on the remote server.

B The remote server 'Server04' is offline.

C PowerShell 5.1 does not support SSH-based remoting with -HostName parameter.

D The SSH service is not installed on the local machine.

💡 Hint

Check PowerShell version compatibility for SSH remoting.

SSH-based remoting with the -HostName parameter is supported starting in PowerShell 7+. PowerShell 5.1 does not recognize this parameter.

🚀 Application

expert

How to run a remote command on multiple machines using SSH remoting in PowerShell 7+?

You have a list of remote servers stored in $servers = @('ServerA', 'ServerB', 'ServerC'). You want to run Get-Service on all of them using SSH remoting and collect the results locally. Which script correctly does this?

A Invoke-Command -HostName $servers -ScriptBlock { Get-Service }

B $servers | ForEach-Object { Invoke-Command -HostName $_ -ScriptBlock { Get-Service } }

C $servers | ForEach-Object { Enter-PSSession -HostName $_ -ScriptBlock { Get-Service } }

D Invoke-SSHCommand -ComputerName $servers -Command 'Get-Service'

💡 Hint

Think about how to run commands on multiple hosts sequentially and collect output.

Invoke-Command with -HostName accepts one hostname at a time. Using ForEach-Object to loop over the list runs the command on each server and collects output.