4. Algorithm, this is correct as the use of an algorithm shows the way in which a problem is solved
Answer:
(always on) availability group
Explanation:
Availability group of SQL server 2012 provides replicated alternatives for multiple databases.
In case of a disaster situation, this feature recovers the system by using replicated environments.
This feature is an alternative solution to <em>database mirroring</em>
<span>The part of the computer that provides access to the internet is the "modem".
</span>
A modem refers to a hardware device that enables a PC to send and get information over a phone line or a link or satellite association. On account of transmission over a simple phone line, which was at one time the most prevalent approach to get to the internet, the modem changes over information amongst simple and computerized designs progressively for two-way network communication.
You would want to configure to show file extensions for a couple different reasons. First if you have a couple files and they are have the same name but one is say a PDF while the other is a DOCX file. Another reason, mainly for development, programming, graphic design, ect. you may need to know different extensions to determine the language a file is written in such as PHP, HTML, ect. or to know an image type such as jpg, png, gif, ect.