Digital literacy is the term for having knowledge of computers, internet, mobile devices and related technologies.
Answer: DMZ
Explanation:
DMZ is the demilitarized zone network and it is use in providing he various services to the users or customers by using the public internet. It basically contain organizational services in the logical and physical sub-network and usually works in large network.
The main purpose of DMZ that it is use as web server over the internet for reaching to the users and customers. It also add one additional layer in the organization for security purpose.
Some of the services that DMZ provides as web server, DNS and proxy server.
<span>Switch's physical interface is something as the name itself suggests itself that it is a physical port to which you can plug in a cable or a wire based on its function and usage where as VLAN interface is no physical port but are created virtually when needed.</span>
Correctness is key. The other ones are optimizations at most. Although I would always include humor... ;-)