21 years old. If you take 1944-1923 you get 21 because that would be ho wold they are
Where all "the following" i can help you but you said which of the folllowing and ther no picture or anything?
Answer:
WiFi, Ethernet, Broadband, Dial-up. Any of those.
Explanation:
Network connections are all different. Those listed are some of the many examples of network connections.
I think that the answer is: A executable