IT Questions and Answers :)

Friday, July 23, 2021

In Linux, which of these is the final step for installing software from a source file using the terminal?

In Linux, which of these is the final step for installing software from a source file using the terminal?

  • install pkg
  • sudo install <path>
  • make install
  • ./configure          

In Linux, which of these is the final step for installing software from a source file using the terminal?


EXPLANATION

Steps are as follows:

1. Unzip file

2. Navigate to it within the terminal using cd

3. Type './configure'

4. Type 'make'

5. Type 'make install'


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Which of the following protocols is not supported natively in Windows?

Which of the following protocols is not supported natively in Windows?

  • SMB
  • FTP
  • NFS
  • AFP 

Which of the following protocols is not supported natively in Windows?


EXPLANATION

So, assuming that your PC and Mac are both sitting comfortably on your network, wirelessly or otherwise (if you haven't gotten that far, you need more help than I'll be providing right here), there are a couple of different ways for the various machines on your network to talk to each other and share files. Think of 'em sorta like languages.

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Friday, July 16, 2021

In computer graphics, what is alpha compositing?

In computer graphics, what is alpha compositing?

  • Removing unused image information from a layer and use it to enhance another one (8bit to 16bit)
  • Combining an image with a background to create the appearance of partial or full transparency
  • Combining images to achieve pseudo 3D look
  • Removing a range of colors in RGB from an image for a stylized look

In computer graphics, what is alpha compositing?


EXPLANATION

Alpha compositing is the process of combining an image with a background to create the appearance of partial or full transparency. 

It is often useful to render image elements in separate passes, and then combine the resulting multiple 2D images into a single, final image called the composite.

 For example, compositing is used extensively when combining computer-rendered image elements with live footage.               
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Wednesday, July 14, 2021

How many usable networks and hosts can be created using a 192.168.2.1/26 subnet?

 How many usable networks and hosts can be created using a 192.168.2.1/26 subnet?

  • 4 Networks and 62 hosts
  • 4 Networks and 64 Hosts
  • 4 Hosts and 64 Networks
  • 4 Networks and 192 Hosts      

How many usable networks and hosts can be created using a 192.168.2.1/26 subnet?


EXPLANATION

a /26 CIDR in a class C network will provide 4 Networks and 62 usable hosts. This is calculated by the number of bits borrowed to create the network, in this case its 2 bits borrowed to create the Networks multiplied by the power of 2, 2^2=4 and the number of bits remaining for the hosts,  in the last octet 2^6 =64. 

Since you need to subtract 2 for the network and broad cast, it would be 64-2=62

2^(h-2) 

The Subnet mask would be 255.255.255.192 

In binary it would be , note that there are 8 bits in each Octet and borrowed 2bits, 8+8+8+2= 192

11111111.11111111.11111111.11000000

SinceSince

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Tuesday, July 13, 2021

In Windows Server 2012 and later, which PowerShell cmdlet creates a new NIC team?

 In Windows Server 2012 and later, which PowerShell cmdlet creates a new NIC team?

  • Add-NetLbfoTeam
  • New-NetLbfoTeam
  • Set-NewNICTeam
  • New-LbfoTeam               

In Windows Server 2012 and later, which PowerShell cmdlet creates a new NIC team?


EXPLANATION

The New-NetLbfoTeam cmdlet creates a new NIC team that consists of one or more network adapters.


SOURCE

https://technet.microsoft.com/en-us/library/jj130847(v=wps.630).aspx
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Monday, July 12, 2021

What is the maximum user mailbox size for an Office 365 E3 license?

What is the maximum user mailbox size for an Office 365 E3 license?

  • 50 GB
  • 100 GB
  • 1 TB
  • Unlimited 

What is the maximum user mailbox size for an Office 365 E3 license?


EXPLANATION

Simple question, something I learned recently as I was solving an issue with a user's mailbox.

User mailbox storage limit for an E3 license is 100 GB, it's archive limit is unlimited and its address list limit is 1000.

SOURCE

https://docs.microsoft.com/en-us/office365/servicedescriptions/exchange-online-service-description/exchange-online-limits
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What is the minimum PowerShell version that supports Desired State Configuration?

What is the minimum PowerShell version that supports Desired State Configuration?

  • 2.0
  • 4.0
  • 5.0
  • 3.0       

What is the minimum PowerShell version that supports Desired State Configuration?


EXPLANATION

Desired State Configuration (DSC) was first included in Powershell Version 4 (a part of Windows Management Framework (WMF) 4.0) and further improved in later versions. 

DSC enables you to declare your computer configuration in scripts and then apply that configuration to computers programmatically. The computers are configured to the desired state and remain in the desired state. 

The configuration can be applied to one or many computers, making sure they're always compliant with your requirements.

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