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Question-1. What is PowerShell?
Answer-1: PowerShell is a task automation and configuration management framework from Microsoft, consisting of a command-line shell and a scripting language.
Question-2. Who developed PowerShell?
Answer-2: PowerShell was developed by Microsoft.
Question-3. What is the latest version of PowerShell?
Answer-3: The latest version of PowerShell is PowerShell 7.x, as of 2023.
Question-4. Is PowerShell open source?
Answer-4: Yes, PowerShell is open source starting from PowerShell Core (version 6).
Question-5. What is the purpose of cmdlets in PowerShell?
Answer-5: Cmdlets are lightweight, single-function commands built into PowerShell used for task automation and management.
Question-6. What is the file extension of a PowerShell script?
Answer-6: PowerShell scripts use the .ps1 file extension.
Question-7. How do you execute a PowerShell script?
Answer-7: You can execute a PowerShell script by running .\scriptname.ps1 in the PowerShell terminal.
Question-8. What is the difference between PowerShell and Command Prompt?
Answer-8: PowerShell is more powerful and supports scripting, automation, and integration with .NET, whereas Command Prompt is a basic shell with limited functionality.
Question-9. What is the pipeline operator in PowerShell?
Answer-9: A pipeline is a series of commands connected by pipeline operators ( | ) (ASCII 124). Each pipeline operator sends the results of the preceding command to the next command. The output of the first command can be sent for processing as input to the second command. And that output can be sent to yet another command.
Question-10. What is a module in PowerShell?
Answer-10: A module is a package that contains cmdlets, providers, functions, workflows, and scripts for use in PowerShell sessions.
Question-11. How do you import a module in PowerShell?
Answer-11: You can import a module using the Import-Module cmdlet.
Question-12. What is the purpose of Get-Help in PowerShell?
Answer-12: Get-Help provides detailed information about cmdlets, functions, and scripts, including syntax and examples.
Question-13. How do you get a list of all available cmdlets?
Answer-13: Use the Get-Command cmdlet to list all available cmdlets.
Question-14. What does Get-Process do in PowerShell?
Answer-14: Get-Process retrieves information about processes running on a local or remote computer.
Question-15. What is $PSVersionTable in PowerShell?
Answer-15: $PSVersionTable is an automatic variable that contains details about the PowerShell version and environment.
Question-16. What are aliases in PowerShell?
Answer-16: Aliases are shortcuts or alternative names for cmdlets, making it easier to use them.
Question-17. How do you define a variable in PowerShell?
Answer-17: Variables are defined using the $ symbol, e.g., $variable = "value".
Question-18. What are PowerShell providers?
Answer-18: Providers enable access to data stores, such as the registry, file system, or certificates, as if they were a file system.
Question-19. What is the purpose of Set-ExecutionPolicy in PowerShell?
Answer-19: Set-ExecutionPolicy sets the execution policy for scripts, determining whether they can run on a system.
Question-20. What are the execution policy levels in PowerShell?
Answer-20: Execution policy levels include Restricted, AllSigned, RemoteSigned, Unrestricted, and Bypass.
Question-21. What is a function in PowerShell?
Answer-21: A function is a reusable block of code defined with the function keyword.
Question-22. How do you create a PowerShell function?
Answer-22: Use the syntax: function FunctionName { code }.
Question-23. What is the foreach loop in PowerShell?
Answer-23: The foreach loop iterates through each item in a collection, executing code for each item.
Question-24. How do you handle errors in PowerShell?
Answer-24: PowerShell uses try, catch, and finally blocks for error handling.
Question-25. What is the Write-Host cmdlet used for?
Answer-25: Write-Host is used to display output directly to the console.
Question-26. How do you retrieve services in PowerShell?
Answer-26: Use the Get-Service cmdlet to retrieve information about services.
Question-27. What is the purpose of Start-Job in PowerShell?
Answer-27: Start-Job starts a background job in PowerShell.
Question-28. How do you stop a job in PowerShell?
Answer-28: Use the Stop-Job cmdlet to stop a running job.
Question-29. What is the difference between Write-Host and Write-Output?
Answer-29: Write-Host writes directly to the console, while Write-Output sends data to the pipeline.
Question-30. How do you save the output of a cmdlet to a file?
Answer-30: Use the > operator or Out-File cmdlet, e.g., Get-Process > output.txt.
Question-31. What is Select-Object used for in PowerShell?
Answer-31: Select-Object selects specific properties of an object or a subset of objects.
Question-32. How do you sort data in PowerShell?
Answer-32: Use the Sort-Object cmdlet to sort data by one or more properties.
Question-33. What is a hash table in PowerShell?
Answer-33: A hash table is a collection of key-value pairs defined with @{ key = value }.
Question-34. How do you execute a command on a remote computer in PowerShell?
Answer-34: Use the Invoke-Command cmdlet for remote execution.
Question-35. What is PowerShell Remoting?
Answer-35: PowerShell Remoting allows commands and scripts to be executed on remote computers.
Question-36. How do you enable PowerShell Remoting?
Answer-36: Use the Enable-PSRemoting cmdlet to enable remoting.
Question-37. What is the purpose of Test-Connection in PowerShell?
Answer-37: Test-Connection sends ICMP echo requests (pings) to test network connectivity.
Question-38. How do you export data to a CSV file in PowerShell?
Answer-38: Use the Export-Csv cmdlet, e.g., `Get-Process
Question-39. How do you import data from a CSV file in PowerShell?
Answer-39: Use the Import-Csv cmdlet, e.g., $data = Import-Csv -Path process.csv.
Question-40. What is the difference between -eq and = in PowerShell?
Answer-40:
Question-41. What does the -like operator do in PowerShell?
Answer-41: The -like operator is used for wildcard pattern matching.
Question-42. What is the purpose of the Where-Object cmdlet?
Answer-42: Where-Object filters objects based on specified criteria.
Question-43. How do you measure the properties of an object in PowerShell?
Answer-43: Use the Measure-Object cmdlet to calculate properties like count, sum, average, etc.
Question-44. How do you clear the console in PowerShell?
Answer-44: Use the Clear-Host cmdlet or its alias cls.
Question-45. What is $null in PowerShell?
Answer-45: $null represents the absence of a value or an undefined variable.
Question-46. How do you append data to a file in PowerShell?
Answer-46: Use the >> operator or the Add-Content cmdlet.
Question-47. How do you run a script with elevated privileges?
Answer-47: Open PowerShell as an administrator and run the script.
Question-48. What is PowerShell ISE?
Answer-48: PowerShell ISE (Integrated Scripting Environment) is a GUI-based editor for creating, debugging, and testing PowerShell scripts.
Question-49. How do you get system information in PowerShell?
Answer-49: Use the Get-ComputerInfo cmdlet to retrieve detailed system information.
Question-50. How do you stop a running script in PowerShell?
Answer-50: Use Ctrl + C to stop a running script.
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