Answer:
I think servers and networks.
True. The acronym for service set identity is SSID, which you've likely saw before. And like you say, it's simply the unique name given to a wireless network so that we are able to identify what network we are connecting to.
When the email was sent as a group email
Answer:
Citing or documenting the sources used in your research serves three purposes:
It gives proper credit to the authors of the words or ideas that you incorporated into your paper.
It allows those who are reading your work to locate your sources, in order to learn more about the ideas that you include in your paper.