Answer:
SONET was the only one on the list created near the 1980s (1985)
Good luck!
<em>~Awwsome</em>
00110001 00110100 00110000
Answer:

Explanation:
The statements are logically equivalent if they have the same truth tables. So let´s use truth tables in order to determine if they are logically equivalent or not:
The picture that I attached you shows the truth table for each case. As you can see in the highlight columns:

They are logically equivalent because they have exactly the same truth values between each other. Hence, we can conclude that they are logically equivalent.
Answer:
XML (Extensible Markup Language):
Explanation:
XML (Xtensible Markup Language):
It is a markup language that is used for creating web-pages, it defines a set of rules that makes it readable both to humans and machine.
XML was primarily designed to be a software and hardware independent tool and it's focus was on data. XML provides a framework for defining markup languages.
XML, HTML and XHTML are all related to each other because they are all markup languages and can be used to build websites.
Basically,
-HTML is primarily for web-pages.
-XML is primarily for data.
-XHTML is a standard based on HTML that follows the strict rules of XML.