PowerShell interview questions and answers 👇

  1. PowerShell Interview Questions


PowerShell Interview Questions

1.

Explain cmdlets.

A cmdlet is a lightweight command that is used in the PowerShell environment. The PowerShell runtime invokes these cmdlets within the context of automation scripts that are provided at the command line. The PowerShell runtime also invokes them programmatically through PowerShell APIs.

2.

What is PowerShell modules?

A module is a package that contains members that can be used in PowerShell. Members include cmdlets, providers, scripts, functions, variables, and other tools and files. After a module is imported, you can use the module members in your session.

3.

What is Execution policy?

PowerShell's execution policy is a safety feature that controls the conditions under which PowerShell loads configuration files and runs scripts. This feature helps prevent the execution of malicious scripts.

4.

What are types of Execution policy?

There are four execution policies: Restricted, AllSigned, RemoteSigned, Unrestricted, and Bypass. The Restricted policy, which is also the default execution policy, prevents us from running any PowerShell scripts, but does allow us to use the shell interactively.

5.

What is PowerShell Loop?

PowerShell loops repeat the same set of commands a set number of times. Ideal for performing consistent actions for a set period of time or a certain number of records, loops can simplify your scripts significantly.

6.

What is the use of hash table in Powershell?

Hash tables are frequently used because they are very efficient for finding and retrieving data. You can use hash tables to store lists and to create calculated properties in PowerShell.

7.

What is Variable Interpolation?

String Interpolation in PowerShell is the way of replacing the value of a variable into placeholders in a string. It displays the value of the variable in the string. PowerShell string interpolation provides a more readable, easier-to-read, and convenient syntax to create a formatted string.

8.

What is #Requires statement?

The #Requires statement prevents a script from running unless specific conditions the PowerShell version, modules, snap-ins, module and snap-in version, and edition prerequisites are met.

9.

Explain Powershell Scopes.

PowerShell scopes protect access to variables, aliases, functions, and PowerShell drives (PSDrives) by limiting where they can be read and changed.

10.

What are Arithmetic Operators?

The arithmetic operators are used in a PowerShell to perform the calculation of the numeric values. By using the arithmetic operators, we can add (+), subtract (-), multiply (*), or divide (/) the values. These operators also include the modulus (%) operator to calculate the remainder of the division operation.

11.

How do you use brackets in PowerShell?

(): Curved parenthesis brackets are used for compulsory arguments. {}: Curly brackets are employed in blocked statements []: Square brackets are they define optional items, and they are not frequently used.

12.

What is PowerShell Array?

An array is a data structure that serves as a collection of multiple items. You can iterate over the array or access individual items using an index. The array is created as a sequential chunk of memory where each value is stored right next to the other.

13.

Explain variables in PowerShell.

A variable is a unit of memory where values are stored. In PowerShell, variables are depicted by text strings that begin with a dollar sign ($), such as $a, $process, or $my_var. PowerShell variables are effective as they can be mapped to underlying classes in the framework of .NET.

PowerShell considers variables as .NET objects, meaning that they can save data and control data in numerous ways. Variable names in PowerShell start with a dollar sign and include a mix of numbers, letters, symbols, and spaces.

14.

What is CIM in PowerShell?

CIM (Common Information Model) is a database that holds details about all managed elements on a computer system.

15.

What is a pipeline in PowerShell?

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.

16.

What is a NoteProperty in PowerShell?

NoteProperties are generic properties that are created by Powershell (as opposed to properties that are inherited from a specific dotnet object type).

17.

What is $Home?

$Home contains the complete path of the user’s home directory. This variable can be considered as the equivalent of the %homedrive%%homepath% environment variables in windows such as C:Users<UserName.

18.

What are Automatic variables?

Automatic variables are that describe variables that store state data for PowerShell. These variables are basicly created and maintained by PowerShell itself.