Which of the following is the default port used for POP3 SSL Traffic?

Which of the following is the default port used for POP3 SSL Traffic?

• 110
• 25
• 995
• 587          

EXPLANATION

POP uses port 110, but SSL/TLS encrypted POP uses port 995.

SOURCE

https://www.fastmail.com/help/technical/ssltlsstarttls.html 
     

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A 17xx POST error code indicates a problem with the which of the following?

A 17xx POST error code indicates a problem with the which of the following?

• System Board
• Video
• RAM or ROM
• Hard Drive       

EXPLANATION

Hard Drive or Controller Explanation Error codes beginning with 17 (17xx) relates to issues of the HDC.  

SOURCE

https://www.proprofs.com/quiz-school/story.php?title=Comptia-Server-Practice-Questions-125-Set-1-4        

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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          

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'

SOURCE

https://thoughtbot.com/blog/the-magic-behind-configure-make-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 

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.

SOURCE

https://gizmodo.com/5430678/how-to-make-your-pc-and-mac-share-stuff-like-best-friends              

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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

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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