USB flash drives sharing on computer network [closed]

https://en.wikipedia.org/wiki/USB

https://en.wikipedia.org/wiki/Computer_network

Can we share USB flash drives on a computer network?

Example : USB flash drives connected to a local Windows/Mac/Linux os machine is part of the computer network. The contents of the USB flash drives to be shared with other computers.

Can this be implemented?

How to turn lights on and off using a computer

I was watching a YouTube video on how computers were becoming a rage in the ’80’s in the first world countries. At 11:57, the user has programmed the computer to turn several appliances at his home on automatically in the middle of night. Similarly, at 13:58, the man uses voice commands to turn his lamp on and off. I want to know how (and if) I can achieve these tasks (especially the first one) using a modern day pc/laptop. I have seen several videos where people use Arduino or Raspberry Pis to achieve this. I want to know if I can bypass these devices.

Side Note: I am a beginner in programming but can write Python scripts to automate some of my stuff.

Remote debugging android app from another computer on different network

Is is it possible for Android development to remote debug an app from another network? I am not talking about WebView/Web Pages debugging but as stated here, as this page talks about remote debugging a WebView or web pages opened in any app and also I don’t think it will work on if device and computer are on different networks.

My scenario is that if Device A is connected to Computer A on Wifi A and I want to debug the app running on Device A from Computer B on Wifi B.

There is option to connect your device using the ADB wireless debugging using TCP-IP, but that requires the Device and Computer to be on the same network, but in my case device and computer are on another network.

How can we limit access to a single computer?

We would like to limit access to a web server (and eventually other services on the computer) to individuals that have been authorized access. Of course we don’t trust passwords so we think certificates are the right answer.

There are hundreds of these servers. Access to any one server should NOT provide access to any other server. The access should be to only the single server. (Access will also be time limited for additional security).

How can we implement these security requirements?

We are currently on a path that would involve creating individual CAs for each server. The server would require mutual authentication for the server and client. The server and client certs would be signed by the unique CA for each server.

Is there an alternative? Perhaps one that does not involve creating many CAs?

Thanks for you advice.

FYI — The servers are all running Linux.

Can a computer fan send you a code?

Normally, when I turn on my cpu the fan goes to high speed for a second and normalizes. Lately, when I start my CPU the fan seems to send me a code in pulses. Similar to how some devises send an error code through a flashing light, but in this case a flashing fan; can a cpu fan send a code and are used like this? If not intentional, what would cause the fan’s sofeware to be changed or signal to the fan interrupted?

The fan sounds normal and silent as always and cpu is normal too.

Is Group Theory useful in Computer Science in other areas but cryptography?

I have heard many times that Group Theory is highly important in Computer Science, but does it have any use other than cryptography? I tend to believe that it does have many other usages, but cannot find out where and how to apply Group Theory to other areas in CS, such as algorithms, data structres, graphs, complexity and so forth.

What subfields in computer sciences may one study without learning Object Oriented Programming?

What subfields in computer sciences may one study without learning Object Oriented Programming or is there some kind of degree in Computer Science without the OOP knowledge requirement?

Is there a language without OOP?

Does one need to know OOP to simulate a CPU?

I wanted to earn a CS degree without ever learning OOP. Is there a name for that?

My guess what that Computer science without OOP is simply applied Statistics or Machine Learning using SKlearn and packages.