Windows media player should come pre-installed on your system and does not cost anything. You likely have malware on your system. I would download Malwarebytes antimalware from here
https://www.malwarebytes.org/mwb-download/thankyou/
There is a premium version but just do the free one. Install and run. Let it get rid of the bad stuff it finds. I would also make sure you have an up to date Antivirus software and run a scan. There are plenty of good free ones if you don't have one installed already.
Explanation:
its too old question bro I can't answer just for points
I have no idea, i just need points. Good luck
UDP = connectionless vs. TCP is connection oriented.